Ask any competitive shooter player how sensitive their aim is and they will quote a number called eDPI. It is the single most useful figure for comparing and dialing in mouse sensitivity across games and gear, yet it confuses newcomers because it combines two separate settings. Once you understand eDPI you can find a consistent sensitivity that transfers between games and stops you from resetting your aim every time you swap titles.
The formula behind eDPI
eDPI stands for effective dots per inch, and it is simply your mouse DPI multiplied by your in-game sensitivity. A mouse set to 800 DPI with an in-game sensitivity of 1.0 gives an eDPI of 800. The same feel results from 400 DPI at 2.0 sensitivity, because that is also 800 eDPI. This is why eDPI, not raw DPI or in-game sensitivity alone, is the true measure of how far your crosshair moves per inch of mouse travel.
Why raw DPI alone misleads
Two players both running 1600 DPI can have wildly different aim if their in-game sensitivities differ. eDPI cuts through that by giving one comparable number. When a pro shares their sensitivity, the eDPI is what you copy, then you split it into whatever DPI and in-game values suit your hardware.
| Play style | Typical eDPI range | Arm/wrist aim |
|---|---|---|
| Low sens (tactical shooters) | ~200-400 | Large arm movements |
| Medium sens (all-round) | ~400-800 | Mix of arm and wrist |
| High sens (arena/fast games) | ~800-1600+ | Mostly wrist |
Find your ideal number
Start in the medium range and adjust based on whether you overshoot or undershoot targets. If you constantly fly past enemies and cannot control recoil, lower your eDPI. If you cannot turn around fast enough or run out of mousepad, raise it. Change one variable at a time and give each setting a few sessions before judging — muscle memory needs time to adapt, and constant tweaking prevents it from forming at all.
Keep sensitivity consistent across games
Different games use different sensitivity scales, so the same in-game number feels different in each. Matching eDPI, or better yet using a cm-per-360 measurement (how far you physically move the mouse to spin a full circle), lets you carry the same muscle memory everywhere. Set your DPI once, then adjust each game’s in-game sensitivity to hit your target eDPI or matching 360 distance.
Mouse and pad factors that interact with eDPI
Your eDPI does not exist in a vacuum; the surface under the mouse shapes how it feels. A low eDPI demands big arm sweeps, so it pairs with a large mousepad — many low-sens players use a desk-sized cloth pad measuring roughly 45 by 40 centimeters or larger just to have room to aim. Turn on raw input in every game so the operating system’s pointer settings do not distort your movement, and make sure Windows mouse acceleration, sometimes labelled Enhance pointer precision, is switched off, because it makes the same physical motion travel different distances depending on speed and ruins the consistency eDPI is meant to give you. With acceleration off, raw input on, and a pad big enough for your chosen sensitivity, the number you dial in behaves the same every single time.
FAQ
Should I use a high or low DPI to reach my eDPI?
Moderate native DPI values like 800 or 1600 are a safe choice because they usually sit at the sensor’s native step, avoiding interpolation. Reach your desired eDPI by adjusting in-game sensitivity around that DPI rather than pushing DPI to extremes.
What is cm per 360 and is it better than eDPI?
cm per 360 measures the physical mouse distance to turn a full circle, and many players consider it even more precise than eDPI because it accounts for a game’s exact sensitivity scaling. Both are useful; eDPI is quicker to calculate, cm per 360 transfers more accurately between different games.
Bottom line
eDPI is DPI times in-game sensitivity, and it is the number to standardize on. Pick a range that matches your style, change it slowly so muscle memory can form, and match eDPI or cm per 360 across your games so your aim feels the same everywhere. Consistency, not chasing a magic value, is what builds accuracy.
