Directory
All 535 free online tools
The complete catalog of every ToolChamp tool — image converters, PDF editors, audio/video tools, calculators, developer utilities, and more, organized by category.
Every tool is free with no signup, no usage limits, and no watermark on output. Tools run entirely in your browser, so your files never leave your device — no uploads, no accounts, no database. A small stateless API handles only network lookups (such as WHOIS, SSL, and IP geolocation), which take a domain or IP address, never your files. Use the search and category filter to jump to what you need, or browse the 27 categories below.
535 across 27 categories · always free · no account needed
Images
109PNG → JPG
Convert PNG images to JPG format
PNG → WEBP
Convert PNG images to WEBP format
PNG → BMP
Convert PNG images to BMP format
PNG → GIF
Convert PNG images to GIF format
PNG → ICO
Convert PNG images to ICO format
PNG → AVIF
Convert PNG images to AVIF format
PNG → TIFF
Convert PNG images to TIFF format
JPG → PNG
Convert JPG images to PNG format
JPG → WEBP
Convert JPG images to WEBP format
JPG → BMP
Convert JPG images to BMP format
JPG → GIF
Convert JPG images to GIF format
JPG → ICO
Convert JPG images to ICO format
JPG → AVIF
Convert JPG images to AVIF format
JPG → TIFF
Convert JPG images to TIFF format
WEBP → PNG
Convert WEBP images to PNG format
WEBP → JPG
Convert WEBP images to JPG format
WEBP → BMP
Convert WEBP images to BMP format
WEBP → GIF
Convert WEBP images to GIF format
WEBP → ICO
Convert WEBP images to ICO format
WEBP → AVIF
Convert WEBP images to AVIF format
WEBP → TIFF
Convert WEBP images to TIFF format
BMP → PNG
Convert BMP images to PNG format
BMP → JPG
Convert BMP images to JPG format
BMP → WEBP
Convert BMP images to WEBP format
BMP → GIF
Convert BMP images to GIF format
BMP → ICO
Convert BMP images to ICO format
BMP → AVIF
Convert BMP images to AVIF format
BMP → TIFF
Convert BMP images to TIFF format
GIF → PNG
Convert GIF images to PNG format
GIF → JPG
Convert GIF images to JPG format
GIF → WEBP
Convert GIF images to WEBP format
GIF → BMP
Convert GIF images to BMP format
GIF → ICO
Convert GIF images to ICO format
GIF → AVIF
Convert GIF images to AVIF format
GIF → TIFF
Convert GIF images to TIFF format
ICO → PNG
Convert ICO images to PNG format
ICO → JPG
Convert ICO images to JPG format
ICO → WEBP
Convert ICO images to WEBP format
ICO → BMP
Convert ICO images to BMP format
ICO → GIF
Convert ICO images to GIF format
ICO → AVIF
Convert ICO images to AVIF format
AVIF → PNG
Convert AVIF images to PNG format
AVIF → JPG
Convert AVIF images to JPG format
AVIF → WEBP
Convert AVIF images to WEBP format
AVIF → BMP
Convert AVIF images to BMP format
AVIF → GIF
Convert AVIF images to GIF format
AVIF → ICO
Convert AVIF images to ICO format
AVIF → TIFF
Convert AVIF images to TIFF format
TIFF → PNG
Convert TIFF images to PNG format
TIFF → JPG
Convert TIFF images to JPG format
TIFF → WEBP
Convert TIFF images to WEBP format
TIFF → BMP
Convert TIFF images to BMP format
TIFF → GIF
Convert TIFF images to GIF format
TIFF → ICO
Convert TIFF images to ICO format
TIFF → AVIF
Convert TIFF images to AVIF format
Image Compress
Reduce image file size with quality control
Image Resize
Resize images to custom dimensions or social media presets
Image Crop
Crop images with free or fixed aspect ratios
Rotate & Flip
Rotate or flip images in any direction
EXIF Viewer
View all metadata from photos: camera, GPS, date, etc.
EXIF Remover
Strip metadata from images for privacy
Image Watermark
Add text or tiled watermark to images
HEIC to JPG
Convert iPhone HEIC photos to JPG or PNG
SVG to PNG
Convert SVG vector graphics to raster images
Image to Base64
Convert images to Base64 data URI strings
Color Palette
Extract dominant colors from any image
Image Filters
Apply grayscale, sepia, blur, and more
Background Changer
Replace solid background colors in images
Passport Photo
Crop and resize to standard ID photo formats
GIF Maker
Create animated GIFs from multiple images
Image to Text (OCR)
Extract text from images using Tesseract OCR
Image Collage
Combine multiple images into grid collage layouts
Image to Sketch
Convert photos to pencil drawing effect
Image Splitter
Split images into NxN grid tiles for Instagram carousels
Meme Generator
Add top/bottom text to images with classic meme styling
Document Scanner
Turn photos of documents into clean, scanned-looking images
Color Blindness Sim
Preview how images look with different types of color blindness
Image Diff
Compare two images and highlight visual differences
Add Text to Image
Overlay text with font, color, and size control
Image Pixelator
Pixelate or blur specific areas in images
Image Border
Add decorative borders and frames to images
Circle Image
Crop images to circular shape for profile photos
Image Overlay
Blend two images with opacity and blend modes
Photo Color Corrector
Adjust brightness, contrast, saturation, and hue
Film Grain
Add film grain and noise effects to images
Sticker Maker
Add white outline to images for sticker effect
Image Histogram
View RGB histogram and color distribution
Social Image Resizer
Resize one image to all social media sizes at once
PSD to PNG
Convert Photoshop PSD files to PNG
SVG Editor
Edit SVG files: colors, text, and dimensions
Image Translator
OCR + translate text in images
Object Remover
Paint over small objects to erase them using surrounding pixels
Image Noise Reducer
Smooth grain and speckle with an edge-preserving blur
Photo Colorizer
Paint color onto black and white photos, or apply a tone pass
Photo Restorer
Repair old scans with a clone stamp, auto-levels and sharpening
Image Sharpener
Sharpen soft photos with unsharp mask and edge-aware filters
Remove Text from Images
Paint over text in images to fill it in from nearby pixels
Pixel Art Maker
Draw pixel art on a grid with pencil, fill, and eraser tools
Image to Pixel Art
Convert photos to pixel art with adjustable resolution
Image Color Picker
Upload an image and click anywhere to extract the exact color at that pixel
Duotone Effect
Apply a Spotify-style duotone color effect to any photo
Avatar Generator
Generate unique, deterministic avatars from any text input
Gradient Map
Apply a Photoshop-style gradient map to photos
Color Replace
Replace any specific color in an image with a different color
Social Media Auto Crop
Crop one photo to every social size using edge-energy framing
Background Remover
Cut the subject out of a photo and download a PNG with a transparent background
Compress Image to 100KB
Set 100 KB as a hard ceiling and search JPEG or WebP quality until the image fits
Compress Image to 50KB
51,200 bytes as a hard ceiling — quality and resolution are searched together
Compress Image to 20KB
20,480 bytes, reached by trading resolution for quality so the photo stays legible
Audio & Video
65Audio Converter
Convert between MP3, WAV, OGG, FLAC, AAC formats
Audio Trimmer
Trim audio files with waveform visualization
Video to Audio
Extract audio track from video files
Video to GIF
Convert video clips to animated GIFs
Video Compress
Reduce video file size with quality presets
Video Trim
Cut and trim sections from video files
Video to MP4
Convert MOV, AVI, MKV, WEBM to MP4
Speech to Text
Dictate live using your browser's built-in speech recognition
Video Speed
Change video playback speed (0.25x to 4x)
Video Merge
Concatenate multiple video clips together
Video Reverse
Play video clip backwards
Video Rotate/Flip
Rotate or flip video 90/180/270 degrees
Video Resize
Change video resolution (4K to 360p)
Video Mute
Remove audio track from video
Video Loop
Loop video clip 2x to 10x
Frame Extractor
Extract specific frames from video as images
Video to WebM
Convert video to WebM format
GIF to Video
Convert animated GIF to MP4 video
Audio Waveform
Generate waveform image from audio file
Audio Normalizer
Normalize audio volume to target level
Pitch Changer
Change audio pitch without changing tempo
Audio Speed
Change audio playback speed
Audio Fade
Add fade in and fade out effects
Audio Mixer
Mix multiple audio tracks together
Silence Remover
Remove silent sections from audio
Audio Equalizer
10-band equalizer with presets
Subtitle Editor
Edit SRT/VTT subtitle timing and text
Subtitle Converter
Convert between SRT, VTT, ASS, SBV formats
Subtitle Sync
Shift subtitle timestamps forward or backward
Video Thumbnail
Extract a frame from video as thumbnail image
Burn Subtitles
Hardcode SRT/VTT subtitles into video
Embed Subtitles
Embed soft subtitles into MP4 container
Video Watermark
Overlay image or text watermark on video
Video to MOV
Convert video files to Apple MOV format
MP4 to WebM
Convert MP4 video to WebM format
MKV to MP4
Convert MKV video to MP4 format
BPM & Key Detector
Detect tempo and BPM of audio files
Noise Reduction
Remove background noise from audio
MP3 Tag Editor
Edit ID3 tags: title, artist, album, cover art
Audio to Video
Combine audio with image to create video
M4A to WAV
Convert M4A audio to WAV format
AAC to WAV
Convert AAC audio to WAV format
FLAC to MP3
Convert FLAC audio to MP3 format
OGG to FLAC
Convert OGG audio to FLAC format
AIFF to MP3
Convert AIFF audio to MP3 format
M4A to MP3
Convert M4A audio to MP3 format
WAV to FLAC
Convert WAV audio to FLAC format
AVI to MP4
Convert AVI video to MP4 format
FLV to MP4
Convert Flash video to MP4 format
WebM to MP4
Convert WebM video to MP4 format
Podcast RSS Generator
Build valid podcast RSS feeds from a form
RSS Feed Validator
Validate RSS and Atom feeds against spec
RSS Feed Merger
Combine multiple RSS feeds into one
WMA Converter
Convert WMA audio to MP3, WAV, FLAC, or OGG
OPUS Converter
Convert OPUS audio from Discord/WhatsApp to MP3/WAV
AC3 Converter
Convert Dolby Digital AC3 audio to MP3 or WAV
APE Converter
Convert Monkey's Audio APE files to MP3 or FLAC
VOB to MP4
Convert DVD VOB files to MP4 video
TS to MP4
Convert Transport Stream TS/MTS/M2TS to MP4
WMV Converter
Convert WMV video files to MP4
MPG to MP4
Convert MPG/MPEG video to MP4 format
Pause Remover
Trim long pauses and silent gaps from speech recordings
Subtitle Style Generator
Design subtitle appearance for TikTok/Reels/YouTube
Audio Joiner
Merge MP3, WAV and other audio files into one track, with optional crossfade
Compress Video for Discord
Turns Discord's 10 MB limit into a two-pass bitrate budget from the clip's length
Merge PDF
Combine multiple PDF files into one
Split PDF
Extract specific pages from a PDF
Compress PDF
Reduce PDF file size
Rotate PDF
Rotate pages in a PDF document
Reorder PDF
Rearrange pages in a PDF
PDF to Image
Convert PDF pages to PNG or JPG
Images to PDF
Combine images into a PDF document
PDF Watermark
Add text watermark to PDF pages
PDF Page Numbers
Add page numbers to a PDF
PDF to Text
Extract all text content from a PDF
PDF Password
Add password protection to a PDF
PDF Unlock
Remove password from a PDF (requires password)
PDF Form Filler
Fill out PDF form fields in the browser
PDF to Word
Convert PDF to editable Word document
PDF Sign
Draw your signature and place it on a PDF
PDF Crop
Crop margins and whitespace from PDF pages
PDF to PowerPoint
Convert PDF pages to a PowerPoint presentation
PDF Flatten
Flatten annotations and form fields in PDF
PDF Remove Pages
Delete selected pages from a PDF
PDF Repair
Attempt to repair corrupt PDF files
PDF to HTML
Convert PDF pages to HTML format
PDF Annotator
Highlight, underline, and add text to PDF pages
PDF Redact
Permanently black out sensitive content in PDFs
PDF OCR
Convert scanned PDF to searchable PDF with text layer
PDF to Excel
Extract tables from PDF to Excel spreadsheet
PDF to SVG
Convert PDF pages to vector SVG format
PDF to Markdown
Extract PDF text as Markdown
CBZ/CBR to PDF
Convert comic book archives to PDF
PDF Compare
Visual side-by-side PDF comparison with pixel diff
PDF Overlay
Stamp or overlay one PDF on top of another
PDF Extract Images
Extract all images from PDF at original resolution
PDF Text Editor
Add, replace, and white-out text directly in PDFs.
JPG to PDF
Turn JPG photos into one PDF with page size, margin and order control
PNG to PDF
Convert PNG screenshots to PDF losslessly, with transparency kept
Compress PDF to 500KB
Re-renders pages at falling DPI and JPEG quality until the PDF is under 500 KB
Compress PDF to 1MB
Iterates render settings to a 1,048,576-byte ceiling, often in a single pass
Documents
21DOCX → PDF
Convert Word documents to PDF
DOCX → HTML
Convert Word documents to HTML
DOCX → TXT
Extract plain text from Word docs
TXT → PDF
Convert text files to PDF
HTML → PDF
Convert HTML pages to PDF
MD → HTML
Convert Markdown to styled HTML
MD → PDF
Convert Markdown to PDF document
Word Counter
Count words, characters, sentences, and reading time
Case Converter
Convert text between uppercase, camelCase, snake_case, etc.
Find & Replace
Find and replace text with regex support
HTML to Markdown
Convert HTML pages to Markdown format
Text to Handwriting
Generate handwriting-style images from text
EPUB to PDF
Convert eBooks from EPUB to PDF format
Text to EPUB
Create EPUB eBooks from text or HTML
Text to Speech
Convert text to spoken audio using browser voices
Invoice Generator
Generate professional PDF invoices from a form
Resume Builder
Build a clean PDF resume from a simple form
HTML to Plain Text
Strip HTML tags and extract plain text
Text Summarizer
Extract the key sentences from long text by word frequency
Smart Quotes
Convert straight quotes to typographic quotes
RTF to DOCX
Convert RTF files to Word or plain text
Photography
5Depth of Field Calculator
Calculate DoF, hyperfocal distance, and focus limits
Exposure Calculator
Find equivalent exposures and ND filter calculations
EXIF Batch Editor
Edit EXIF metadata across multiple images at once
Contact Sheet
Generate thumbnail grid proof sheets from images
Photo GPS Map
Upload photos and plot their GPS locations on a map
Data & Dev
94CSV → JSON
Convert CSV spreadsheets to JSON
JSON → CSV
Convert JSON data to CSV format
XML → JSON
Convert XML documents to JSON
JSON → XML
Convert JSON data to XML format
YAML → JSON
Convert YAML configs to JSON
JSON → YAML
Convert JSON data to YAML format
JSON Formatter
Format, validate, and pretty-print JSON
CSV to Excel
Convert CSV files to Excel XLSX format
Base64 Encode/Decode
Encode and decode Base64 text and files
URL Encode/Decode
Encode and decode URL components
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
JWT Decoder
Decode and inspect JWT tokens
Regex Tester
Test regular expressions with live matching
Text Diff
Compare two texts and see differences highlighted
Lorem Ipsum
Generate placeholder dummy text
UUID Generator
Generate random UUID v4 identifiers
QR Code Generator
Generate QR codes from text or URLs
Cron Parser
Parse cron expressions and see next run times
SQL Formatter
Format and beautify SQL queries
Minify / Beautify
Minify or beautify JS, CSS, and HTML code
Excel to PDF
Convert Excel spreadsheets to PDF tables
Excel to CSV
Convert Excel XLSX files to CSV format
vCard to CSV
Convert VCF contact files to CSV spreadsheet
Excel to JSON
Convert Excel spreadsheets to JSON data
JSON Schema Generator
Auto-generate JSON Schema from JSON data
JSON to TypeScript
Generate TypeScript interfaces from JSON
XML Formatter
Pretty-print and validate XML documents
Markdown Table
Visual spreadsheet to Markdown table generator
Markdown Editor
Split-screen Markdown editor with live preview
HTML Entities
Encode and decode HTML entities
Curl to Fetch
Convert curl commands to JavaScript fetch
String Escape
Escape and unescape JSON, HTML, URL, JS strings
Mock Data Generator
Generate fake JSON, CSV, or SQL test data
TOML to JSON
Convert between TOML and JSON formats
SVG to CSS Background
Convert SVG to inline CSS background-image
Color Picker
Pick colors from screen with EyeDropper API
DOCX to Markdown
Convert Word documents to Markdown
Markdown to DOCX
Convert Markdown to Word document
iFrame Generator
Generate responsive iframe embed code
PWA Manifest
Generate web app manifest.json
htaccess Generator
Generate Apache htaccess redirect rules
ASCII Art
Convert text to ASCII art banner
Random Data Generator
Generate random names, emails, addresses
JSON Schema Validator
Validate JSON data against a JSON Schema
Git Diff Viewer
Compare code blocks with colored diff output
Mock API Generator
Define mock API endpoints and generate specs
OpenAPI Generator
Build OpenAPI 3.0 specs from a form
HTTP Headers
Fetch a URL and inspect response headers
Code Screenshot
Create beautiful syntax-highlighted code images
JSONPath Tester
Test JSONPath queries against JSON data
JWT Builder
Build and sign JWT tokens
Regex Explainer
Explain regular expressions in plain language
cURL Builder
Build cURL commands with a visual GUI
JSON Diff
Compare two JSON objects and see structural differences
STL / OBJ Viewer
View 3D models in the browser
DXF Viewer
View and explore DXF CAD files with layer control and export
Email Extractor
Extract and deduplicate email addresses from any text
Phone Extractor
Extract phone numbers in international formats from text
URL Extractor
Extract and validate all URLs and links from text
Coordinate Converter
Convert between DD, DMS, and UTM coordinate formats
GeoJSON Viewer
Visualize GeoJSON data on an interactive map
CSV to Chart
Upload CSV and generate line, bar, pie, and scatter charts
Pivot Table
Create pivot tables from CSV with drag-and-drop columns
SQLite Viewer
Browse SQLite databases and run SQL queries in the browser
Parquet Viewer
View Apache Parquet file schema and data
User Agent Parser
Parse User-Agent strings into browser, OS, and device info
Cookie Viewer
View, edit, and manage browser cookies
LocalStorage Viewer
Browse and edit localStorage and sessionStorage
License Picker
Answer simple questions and get the right open source license
Badge Generator
Build shields.io-style badges for GitHub READMEs
JSON Tree Viewer
Visualize JSON as an interactive collapsible tree with path copying
Unicode Lookup
Search and browse the entire Unicode character set
Crontab Builder
Visually build cron expressions with dropdowns and presets
GitHub README Generator
Generate a beautiful GitHub profile README from a form
.env Editor
Visual editor for .env files with validation and formatting
HTML Table Generator
Build HTML tables visually without writing code
Nginx Config Generator
Generate nginx configuration files from a visual form
Dockerfile Generator
Generate optimized Dockerfiles from a visual form
Changelog Generator
Generate CHANGELOG.md files in Keep a Changelog format
CSV Cleaner
Upload a messy CSV, auto-detect problems, and clean it
JSON to Table
Convert a JSON array into a visual, sortable, filterable table
SQL to CSV
Extract data from SQL INSERT statements into CSV
Text to Diagram
Write text-based syntax and generate flowcharts and diagrams
Responsive Preview
Preview any URL or HTML on multiple device sizes simultaneously
Commit Message Generator
Generate Conventional Commits formatted commit messages from a form
Receipt Scanner
Extract vendor, date, total, and line items from receipt photos.
DXF Converter
Convert DXF to SVG, PNG or PDF — or an SVG to DXF — in your browser, with layers and units shown
DXF to SVG
Convert DXF drawings to SVG with one group per CAD layer and real millimetre dimensions
DXF to PDF
Put a DXF on A4 to A0, Letter or Tabloid as vector paths at 1:1 — no upload, no watermark
SVG to DXF
Flatten SVG paths to DXF polylines at a tolerance you set, with groups kept as layers
PNG to DXF
Trace PNG, JPG, WEBP, GIF, BMP or HEIC images into DXF outlines for laser, CNC and plasma
CSV to vCard
Map spreadsheet columns to vCard fields and export contacts as .vcf
CSV to SQL
Generate CREATE TABLE and batched INSERTs from a CSV, with inferred types
JSON to SQL
Turn a JSON array of objects into CREATE TABLE plus INSERT statements
CSS & Design
21CSS Gradient
Visual gradient editor for linear, radial, and conic gradients
Box Shadow
Generate CSS box shadows with multiple layers
Border Radius
Individual corner radius generator
Flexbox Generator
Visual Flexbox layout builder with code output
Grid Generator
Visual CSS Grid layout builder
Animation Builder
Keyframe animation generator with timing controls
Glassmorphism
Frosted glass effect CSS generator
Neumorphism
Soft UI shadow CSS generator
Button Generator
Full CSS button style editor with hover states
Text Shadow
Text shadow generator with multiple layers
Transform Generator
Rotate, scale, skew, translate with live preview
Filter Generator
CSS filter effects: blur, brightness, contrast, etc.
Clip-Path Generator
Visual polygon and shape clip-path editor
Triangle Generator
CSS-only triangle and arrow shapes
Typography Scale
Modular type scale generator with CSS output
px to rem
Convert px to rem, em, and viewport units
Tailwind Color Picker
Browse and copy Tailwind CSS color palette
Material Palette
Google Material Design color system browser
Wireframe Builder
Quick low-fidelity wireframe sketcher with hand-drawn style
Tailwind to CSS
Convert Tailwind CSS classes to vanilla CSS and vice versa
Color Shades Generator
Generate a full shade scale (50-950) from a single color
Network
9SSL Certificate Checker
Check SSL certificate details, expiry, and chain
WHOIS Lookup
Look up domain registration and ownership info
Port Checker
Test if ports are open on a host or IP
IP Geolocation
Find country, city, and ISP for any IP address
Subdomain Finder
Enumerate subdomains for a domain
Domain Age Checker
Check when a domain was first registered
Internet Speed Test
Test download speed, upload speed, ping, and jitter with a visual gauge
Domain Availability Checker
Check if a domain name is available across 30+ extensions instantly
API Status Dashboard
Quick health check for multiple API endpoints
Electronics
4SEO
13Schema Markup
Generate JSON-LD structured data for rich snippets
XML Sitemap
Generate XML sitemap from URL list
OG Preview
Preview how URLs appear on social media
OG Image Generator
Create 1200x630 Open Graph images
UTM Builder
Build UTM-tagged campaign URLs
Robots.txt Generator
Generate robots.txt with guided form
Robots.txt Validator
Test if URLs are allowed or blocked
Meta Analyzer
SERP preview with title and description analysis
Heading Analyzer
Visualize H1-H6 heading hierarchy from HTML
Keyword Density
Analyze word and phrase frequency in text
Readability Score
Flesch-Kincaid, Gunning Fog, SMOG analysis
Slug Generator
Generate URL-friendly slugs from text
HTTP Status Checker
Check HTTP status codes and response headers
Writing
8Grammar Checker
Check grammar, spelling, and writing style
Headline Analyzer
Score headlines for engagement and readability
Paraphrasing Tool
Rewrite text while preserving meaning
Writing Style Analyzer
Measure burstiness, vocabulary diversity and repetition in text
Glitch Text Generator
Generate Zalgo glitch text with adjustable intensity
Aesthetic Text Generator
Convert text to fullwidth, double-struck, cursive, and more
Language Detector
Detect text language with confidence scores
Writing Prompt Generator
Random creative writing prompts by genre
Presentation
4Finance
7Break-Even Calculator
Calculate break-even point with interactive chart
Profit Margin Calculator
Calculate gross margin, markup, and reverse pricing
VAT Calculator
Calculate VAT amounts with common EU rate presets
Currency Converter
Convert between 30+ world currencies
Freelance Rate Calculator
Calculate your minimum hourly rate from salary goals
Meeting Cost Calculator
Calculate the real cost of a meeting in real-time
IBAN Validator
Validate, format, and generate IBAN numbers
Legal
6NDA Generator
Generate non-disclosure agreements as PDF
Freelance Contract
Generate freelance service contracts
Terms of Service
Generate Terms of Service for websites and apps
Certificate Maker
Create printable certificates and awards
Bill of Sale
Generate simple bill of sale documents
Cookie Banner Generator
Generate a GDPR-compliant cookie consent banner with HTML/CSS/JS
Calendar
5Timezone Converter
Convert time across multiple cities and zones
ICS Calendar Generator
Create downloadable .ics calendar events
Meeting Time Planner
Find overlapping hours across 3+ time zones
Countdown to Date
Countdown to a specific future date with live timer
Seating Chart
Drag-and-drop table layout for weddings and events
Math
16Unit Converter
Convert length, weight, temperature, volume, and more
Percentage Calculator
Calculate percentages, increases, and decreases
Age Calculator
Calculate exact age from birthdate
BMI Calculator
Calculate Body Mass Index with visual scale
Loan Calculator
Monthly payments and amortization schedule
Compound Interest
Calculate future value with compound interest
Tip Calculator
Split bills and calculate tips
Number to Words
Convert numbers to English words
Roman Numerals
Convert between Arabic and Roman numerals
IP Subnet Calculator
Calculate CIDR ranges, subnet masks, usable hosts
Statistics Calculator
Mean, median, mode, standard deviation
Matrix Calculator
Add, multiply, transpose, and invert matrices
Number Base Converter
Convert between binary, decimal, hex, and octal
Function Plotter
Plot 2D math functions on a graph
Macro Calculator
Calculate TDEE calories and protein/carbs/fat macros
Body Fat Calculator
Estimate body fat percentage with Navy method
Education
8Citation Generator
APA, MLA, Chicago, Harvard citation formatter
Flashcard Maker
Create and study flashcard decks
Typing Test
Test typing speed with WPM and accuracy
GPA Calculator
Calculate weighted GPA from course grades
Sudoku
Play and solve Sudoku puzzles
Mind Map
Create visual mind maps and brainstorms
Danish GPA Calculator
Weighted average on the Danish 7-point scale, with ECTS letters and an approximate US GPA
ECTS to GPA Converter
Convert ECTS letters or Danish 7-point marks to an approximate US 4.0 GPA, and back
Gaming
29Sensitivity Converter
Convert mouse sensitivity between CS2, Valorant, Apex, and more
FOV Calculator
Calculate optimal field of view for your monitor setup
Crosshair Generator
Design custom crosshairs and export as PNG
Resolution Calculator
Calculate aspect ratios, PPI, and stretched res options
Keyboard Tester
Test every key with NKRO, ghosting, and chatter detection
Mouse Tester
Test CPS, polling rate, click latency, scroll, and buttons
Monitor Test Suite
Dead pixel, uniformity, response time, and backlight bleed tests
GPU Benchmark
WebGL-based GPU stress test with FPS tracking and scoring
CPU Benchmark
JavaScript CPU benchmark with single-thread and multi-thread tests
Memory Info
View RAM info, JS heap usage, and run memory speed tests
Reaction Time Test
Test visual, audio, and aim reaction time in milliseconds
Aim Trainer
Practice flick, tracking, and precision aiming with scoring
Input Lag Visualizer
Visualize input lag with ghost cursors and frame time analysis
OLED Burn-in Preventer
Pixel exerciser, color cycle, and noise tools for OLED screens
Refresh Rate Test
Detect display refresh rate and test motion clarity at different speeds
Gamepad Tester
Test controller buttons, sticks, triggers, drift, and vibration
Audio Latency Tester
Measure round-trip audio latency with mic loopback test
Webcam Tester
Preview webcam with resolution test, FPS monitor, and snapshot
Microphone Tester
Live volume meter, waveform, spectrum analyzer, and recording test
Nordic Keyboard Tester
Test a Nordic ISO keyboard — Æ, Ø, Å, AltGr and dead keys drawn in place
iRacing FOV Calculator
Horizontal FOV for iRacing from your screen size and seating distance, plus the triple-screen angle
ACC FOV Calculator
Vertical FOV for Assetto Corsa Competizione, plus the measurements its triple-screen mode asks for
LMU FOV Calculator
Vertical FOV for Le Mans Ultimate, which accepts 10-100 and ships at 49 — usually far too wide
AMS2 FOV Calculator
Horizontal FOV for Automobilista 2, which switched axis from AMS1, plus the triple-screen angle
BeamNG FOV Calculator
Vertical FOV for BeamNG.drive's per-camera sliders, well under the 65-degree shipped default
Forza FOV Calculator
Both candidate FOV values for Forza Motorsport's 25-65 clamp, and a test for which axis it uses
Dead Pixel Test
Fullscreen colour cycle to find dead, stuck and dust-faked pixels
Stick Drift Test
Measure resting controller stick drift as a percentage over 5 seconds
Click Speed Test
CPS test over 1, 5, 10, 30 or 60 seconds, with a space-bar mode
Music
7Chord Diagram
Build guitar and ukulele chord diagrams
Guitar Tuner
Tune your guitar using your microphone
Metronome
Tap tempo and adjustable BPM metronome
Chord Progression
Build and play chord progressions
MIDI Player
Play and visualize MIDI files in the browser
Scale Explorer
Interactive scale finder and interval trainer
Music Link Converter
Convert a song link from one platform to all others
Fonts
5Streaming
4Utilities
34Unix Timestamp
Convert timestamps to dates and back
Password Generator
Generate strong, secure passwords
Favicon Generator
Generate favicons in all needed sizes from an image
Placeholder Image
Generate placeholder images in custom sizes
Screen Info
View screen resolution, DPI, and viewport details
ZIP Create
Compress multiple files into a ZIP archive
ZIP Extract
Extract and browse contents of ZIP files
Barcode Generator
Generate Code128, EAN-13, UPC-A barcodes and QR codes
Meta Tag Generator
Generate HTML meta, Open Graph, and Twitter Card tags
Aspect Ratio Calculator
Calculate dimensions for any aspect ratio
Byte Converter
Convert between bytes, KB, MB, GB, TB and bit rates
Pomodoro Timer
Focus timer with work/break intervals and stats
Countdown Timer
Custom countdown to any date and time
Stopwatch
Precision stopwatch with lap tracking
Morse Code
Text to Morse Code translator with audio
Binary Translator
Convert between text, binary, hex, and decimal
ROT13 Cipher
ROT13 and Caesar cipher encryption
Screen Recorder
Record browser tab, window, or screen
MIME Type Checker
Identify file MIME types from extensions
Whiteboard
Freehand drawing canvas with shapes and tools
DNS Lookup
Query DNS records for any domain
Email Validator
Validate email syntax and MX records
RTF to Text
Strip RTF formatting and extract plain text
TAR.GZ Tool
Create and extract TAR.GZ archives
GZ Extract
Decompress gzip files
Startup Name Generator
Generate brand name ideas with .com availability check
Name Generators
Fantasy, band, username, character, and pet name generators
Business Day Calculator
Calculate business days between dates excluding holidays
Batch Converter
Convert up to 20 files at once with progress tracking
WiFi QR Generator
Generate a QR code that connects phones to WiFi when scanned
Ambient Sound Generator
Mix ambient sounds for focus, sleep, or relaxation
Favicon Extractor
Extract the favicon from any website by URL
Lorem Photo
Generate placeholder photos from Picsum for mockups and prototypes
QR Code Reader
Scan QR codes from images or camera - decode URLs, WiFi, contacts & more
Accessibility
5WCAG Contrast Checker
Check color contrast ratio for AA/AAA compliance
Color Wheel
Interactive color theory with harmony suggestions
ARIA Checker
Analyze HTML for common accessibility issues
Tab Order
Visualize keyboard tab order of focusable elements
Color Contrast Matrix
Check WCAG contrast ratios for all combinations of a color palette
Social Media
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