What is eDPI?

eDPI is your mouse DPI multiplied by your in-game sensitivity. It gives two settings one number you can compare.

By Knight · Updated October 8, 2026

Definition

eDPI stands for effective dots per inch. Your mouse reports movement in counts, and your DPI says how many counts you get per inch of movement. The game then multiplies each count by your in-game sensitivity. Put those two together and you get one number that describes how fast your aim is.

Two players with different mice can compare their settings this way. If you both play the same game at the same eDPI, your view turns the same distance for the same mouse movement.

The formula

eDPI = mouse DPI × in-game sensitivity

At 800 DPI and a sensitivity of 0.4, the eDPI is 800 × 0.4 = 320. To find a missing value, rearrange it: sensitivity = eDPI ÷ DPI, and DPI = eDPI ÷ sensitivity.

Open the eDPI calculator

Same eDPI, different settings

Because eDPI is a product, many pairs of settings give the same number. Each row below is an eDPI of 320, and in the same game each one turns the view the same distance.

Mouse DPI	Sensitivity	eDPI
400	0.8	320
800	0.4	320
1600	0.2	320
3200	0.1	320

If you change your mouse DPI, change your sensitivity the other way to keep your aim the same.

eDPI only works inside one game

Games turn the view by a different angle for each count of mouse movement, called the yaw. Counter-Strike 2 turns 0.022 degrees per count at sensitivity 1, and Valorant turns 0.07. The same turn distance is a CS2 sensitivity of 1 at 800 DPI (eDPI 800) and a Valorant sensitivity of 0.314 at 800 DPI (eDPI 251). The eDPI differs by a factor of 3.18 even though the aim is identical.

So an eDPI from one game says little about another. To compare across games, use cm/360, the distance your mouse travels for a full turn, or run your settings through the sensitivity converter.

Common mistakes

Comparing eDPI between games. The number only means something inside the game it came from.

Forgetting that DPI counts. If you change your mouse DPI and keep the same in-game sensitivity, your aim changes.

Copying someone else’s number. An eDPI that works for someone with a large mouse pad and arm aiming may feel wrong on a small pad. Treat it as a starting point and adjust in small steps.

Ignoring the scoped sensitivity. Aim-down-sights and scope settings are separate in most games, and they are not part of this number.

Questions

What does eDPI stand for?

Effective dots per inch. It is your mouse DPI multiplied by your in-game sensitivity.

How do I calculate eDPI?

Multiply the two numbers: eDPI = mouse DPI x in-game sensitivity. At 800 DPI and a sensitivity of 0.4, your eDPI is 320.

Is a higher eDPI better?

No. A higher eDPI only means a faster turn speed in that game. Which speed suits you depends on your arm and wrist movement, your mouse pad and the game you play.

Can I compare my eDPI with a player in another game?

Not directly, because games turn the view by different angles per count. Compare cm/360 instead, or convert your sensitivity first.

Does mouse DPI matter if my eDPI is the same?

For aim speed, no. 400 DPI at sensitivity 0.8 and 1600 DPI at sensitivity 0.2 give the same eDPI and the same turn distance. A higher DPI can make the cursor smoother on the desktop, but the aim in game is the same.

How do I find my mouse DPI?

Check the mouse software from the maker, where the DPI is shown on the active profile. Many mice also have a DPI button and a light that shows the current step. To measure it, use the mouse DPI checker on this site: slide the mouse a set distance along a ruler and it reports your DPI.