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Best Free Gaming Tools & Calculators

Tune your setup and check the odds. Convert mouse sensitivity between games, calculate eDPI and cm per 360, compare frame times, track KD, KDA and win rate, and work out gacha and loot drop probabilities before you spend. Everything is free and runs in your browser. All 22 tools below are free, run in your browser, and need no sign-up.

Mouse Sensitivity ConverterConvert mouse sensitivity between games using cm/360 and DPI. Match your aim across CS2, Valorant, Apex and more instantly in your browser.eDPI CalculatorCalculate your eDPI (effective DPI) from mouse DPI and in game sensitivity. Compare true aim speed across setups instantly in your browser.cm/360 CalculatorCalculate cm/360, the mouse distance for a full turn, from DPI, sensitivity and game yaw. Dial in your aim distance instantly in your browser.Game FOV ConverterConvert field of view between horizontal, vertical and aspect ratios. Match FOV across games and monitors instantly in your browser.FPS to Frame Time CalculatorConvert FPS to frame time in milliseconds and back. See how many ms each frame takes and the frametime budget for smooth gameplay.K/D Ratio CalculatorCalculate your kill death ratio from total kills and deaths. See your K/D and how many kills you need to reach a target instantly in your browser.KDA CalculatorCalculate KDA (kills plus assists divided by deaths) for MOBA and shooter games. See your KDA score instantly in your browser.Win Rate CalculatorCalculate your win rate from wins and losses, and see how many games you must win to hit a target percentage. Fast and private in your browser.Headshot Percentage CalculatorCalculate your headshot percentage from headshots and total kills. Track aim precision across sessions instantly and privately in your browser.Gacha Pull Probability CalculatorCalculate the chance of pulling at least one target unit over N gacha pulls. Uses correct at least one probability math, private in your browser.Loot Drop Probability CalculatorCalculate the chance of getting a rare drop at least once over N kills or runs. Correct probability math, runs privately in your browser.XP to Level CalculatorCalculate total XP needed to reach a target level and how much you still need. Supports linear and scaling curves, private in your browser.DPS CalculatorCalculate damage per second from hit damage, fire rate, crit chance and crit multiplier. Compare weapon builds instantly and privately in your browser.APM CalculatorCalculate actions per minute (APM) from total actions and match duration. Measure your speed in RTS and strategy games privately in your browser.Steam Sale Price CalculatorCalculate the final price of a game after a Steam style discount, plus your total savings and cost for a bundle of titles. Private in your browser.Elo Rating CalculatorCalculate new Elo ratings after a match from both player ratings, the result and a K factor. See rating change and expected score in your browser.Chess Rating Change CalculatorEstimate your chess rating change across a tournament from your rating, opponents and results. Uses expected score math, private in your browser.Gacha Pity CalculatorTrack how many gacha pulls until pity and the currency needed. Enter pity count, current pulls and cost to plan your next banner in your browser.Game Resolution ScalerCalculate render resolution from a resolution scale percentage, plus total pixels and pixel count change. Tune performance instantly in your browser.Controller Deadzone CalculatorCalculate the effective usable stick range after a controller deadzone and see remapped output at any raw input. Runs privately in your browser.Aim Reaction BenchmarkTest your reaction time by clicking the moment the box turns green. Get your best, average and a gamer rating over five tries in your browser.Tickrate Reference and CalculatorLook up server tickrate values and convert tickrate to milliseconds per tick. See how tick timing affects hit registration, private in your browser.

Frequently asked questions

Are these tools free?

Yes. Every tool in this toolkit is completely free, with no sign-up and no usage limits.

Do these tools work on mobile?

Yes. They run in any modern web browser on phone, tablet or desktop, with nothing to install.

Is my data private?

Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.

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