eDPI Calculator
eDPI (effective DPI) combines your mouse DPI and in-game sensitivity into a single number you can compare with pros and teammates.
What is eDPI?
eDPI (effective DPI) is your in-game sensitivity multiplied by your mouse DPI. A 0.4 sens on 1600 DPI produces an eDPI of 640; 0.35 on 1600 DPI is 560. Because the in-game slider is just a multiplier on top of your hardware DPI, eDPI collapses those two numbers into one value that is meaningful within a single game.
When eDPI helps — and when it does not
eDPI works for comparing sensitivity inside one game: you versus pros, you versus teammates, you versus your past settings. It breaks the moment you cross engines. An eDPI of 640 in Valorant (yaw 0.07) produces roughly 40.8 cm/360°, while the same eDPI 640 in CS2 (yaw 0.022) produces about 129.9 cm/360°. Use eDPI inside a game; use cm/360° across games.
Worked example
You play CS2 at sens 1.27 on 800 DPI: eDPI = 800 × 1.27 = 1016. A teammate on 400 DPI needs sens 2.54 to match. Punch any two of the three values into the calculator above and it fills in the third.