Free eDPI calculator. Compute effective DPI (DPI × sensitivity) and cm/360 for CS2, Valorant, Apex, Overwatch and other FPS games. Includes yaw-multiplier presets.
Enter DPI and in-game sensitivity. We calculate eDPI and cm/360.
Enter your mouse DPI and your in-game sensitivity. eDPI = DPI x sensitivity, used to compare aim across games and players.
Effective DPI (eDPI)
400
cm/360 (estimated, default 0.022 yaw): 45.0 cm
Pro reference: 800 DPI x 0.5 sens = 400 eDPI
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eDPI Calculator is a free, browser-based mouse testing tool that lets you calculate effective DPI (DPI x sensitivity) and cm/360 for CS2, Valorant, Apex, Overwatch and other FPS games.
Cost: Free, no signup
Install: None — runs in the browser
Privacy: Runs locally, no uploads
Platforms: Windows, macOS, Linux, Android, iOS
Time: Under a minute
What Is eDPI?
eDPI (effective DPI) is the standard metric for comparing mouse aim across different DPI/sensitivity settings and different games. The formula is simple: eDPI = mouse DPI x in-game sensitivity. A player at 800 DPI / 0.5 sens has the same effective aim as one at 400 DPI / 1.0 sens - both equal 400 eDPI. If you are not certain what DPI your mouse really runs, measure your mouse DPI first — labeled and true DPI often differ, which throws the whole eDPI number off.
Pro CS2 / Valorant players cluster between 200-400 eDPI. Pro Apex players cluster 800-1600 eDPI. Knowing your eDPI lets you copy a pro setting reliably or compare yourself meaningfully to benchmarks. For the outcome side of that comparison — the average aim trainer score in milliseconds per target, plus the hit-% and pixel-error tiers that go with it — check your number against the benchmark table before you change eDPI again.
Changing DPI is where most mistakes happen. Before you move from 800 DPI to 1600 DPI or back down to 400 DPI, use the step-by-step guide on changing mouse DPI without losing aim so your eDPI stays locked.
Fortnite: 60-150 eDPI (very low for build precision)
cm/360 - The Other Reference
cm/360 (centimeters per 360-degree turn) is the physical distance you need to mouse-swipe to do a complete spin in-game. Lower cm/360 = faster sensitivity. Most CS pros play 30-50 cm/360. Apex pros 18-25 cm/360. Calculated from eDPI and the games yaw multiplier (Source engine = 0.022, Valorant = 0.07).
Further Reading
eDPI is the number, crosshair is what you actually see. Once your sensitivity is locked, match a pro's reticle: read how to copy a pro's crosshair in CS2 and Valorant — covers import codes, dot vs cross, and color theory for your new eDPI. And when the loadout debate starts, settle it with numbers: the time-to-kill calculator turns damage, RPM, and armor into exact bullets-to-kill so you know how many milliseconds your aim actually has to buy.
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