Free online gaming tools

Game calculators, loot probability, DPS tools, build optimizers, and gaming utilities.

Twenty-nine tools for tuning a PC setup and checking that the hardware behind it behaves. Aim and sensitivity come first: the Sensitivity Converter carries the per-game yaw constants that make a conversion exact rather than approximate — 0.022 for CS2, Apex Legends and Quake Champions, 0.07 for Valorant, 0.0066 for Overwatch 2 and Call of Duty, 0.5555 for Fortnite, 0.00572958 for Rainbow Six Siege, 0.002222 for Battlefield 2042 and PUBG — lets you lock any three of the four sensitivity and DPI fields and solves the fourth, reports cm per 360 degrees so two setups can be compared across DPI, and ships presets taken from published pro configs including s1mple, ZywOo, TenZ and Aceu. The FOV Calculator solves horizontal, vertical and diagonal field of view from panel size, viewing distance and aspect ratio across 16:9, 16:10, 21:9, 32:9, 4:3 and 3:2, and lists what each of eight shooters defaults to so you know whether a slider is quoted as HFOV or VFOV before you copy a number into it. The Crosshair Generator draws a reticle in a live preview with pro presets and exports it as a transparent PNG. The Resolution Calculator works through the standard ladder from 1024x768 up through ultrawide. Nine more are hardware tests that need nothing installed: the Keyboard Tester lights up keys on ANSI TKL, ANSI Full, ISO TKL, 60%, 65% and 75% layouts and passes n-key rollover once six keys register at once, the Mouse Tester has separate tabs for CPS, polling rate, scroll and drag, the Monitor Test Suite runs dead-pixel, stuck-pixel, colour-uniformity, response-time, backlight-bleed and viewing-angle passes, the Refresh Rate Test measures real frame pacing against the 60, 120, 144 and 240 Hz references, and the OLED Burn-in Preventer cycles pixel-exerciser, colour-cycle, random-noise, pixel-shift and sliding-bar routines on 5, 15, 30 or 60 minute presets. The GPU Benchmark drives a WebGL scene for 10 to 120 seconds, the CPU Benchmark times a prime sieve, matrix multiply, string workload, array sort and a Web Worker multi-thread pass, and Memory Info reads what the browser will disclose about RAM and core count. Gamepad, webcam, microphone and audio-latency testers use the browser's own device APIs, so the stream stays on your machine and nothing is recorded or uploaded. Six of the tools are sim-racing field-of-view pages rather than one generic calculator, because the sims disagree about which angle they are asking for: iRacing, BeamNG.drive and Forza take a horizontal figure, Assetto Corsa Competizione, Le Mans Ultimate and Automobilista 2 take a vertical one, and copying a number between the two groups is what leaves a cockpit drawn at half life size. Each page measures the angle your seating position genuinely covers and prints the value in the units that sim's own settings screen expects, with a triple-screen mode for the three that support it. The Nordic Keyboard Tester is the Danish and Norwegian ISO board specifically - Æ, Ø and Å drawn where they physically sit, the short 1.25u left Shift with the extra angle-bracket key beside it, the L-shaped Enter and a labelled AltGr - and it shows both the physical key code the browser reports and the letter printed on the cap, which is the mismatch that makes a Nordic layout hard to diagnose anywhere else. Three new diagnostics round out the bench: the Dead Pixel Test paints the whole panel one flat colour at a time through red, green, blue, white and black, plus cyan, magenta, yellow and 50 percent grey in the extended run; the Stick Drift Test samples both analog sticks through the Gamepad API for five seconds and reports peak, average and 95th-percentile resting deflection as numbers rather than an impression; and the Click Speed Test runs 1, 5, 10, 30 and 60-second windows, with the clock starting on your first click.

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