Mouse sensitivity: eDPI, cm/360 and DPI changes

PC / FPS

Keep the same turn distance when changing DPI. Enter the game’s yaw coefficient; eDPI alone cannot compare different games. Raw input, no acceleration and a linear sensitivity scale are assumed.

Result

eDPI
800
cm/360
51.9545
Sensitivity at new DPI
0.5

Formula

eDPI = DPI × sensitivity; cm/360 = 360 × 2.54 / (DPI × sensitivity × yaw); new sensitivity = old DPI × old sensitivity / new DPI

Related game questions

FPS, mouse & performance tools

Using this reference

Keep the yaw value tied to the game you are comparing. eDPI combines DPI and sensitivity, but equal eDPI across games with different yaw values does not imply equal physical travel. The cm/360 result is the useful check when the yaw model applies.

For a DPI change within the same settings model, enter the old DPI, old sensitivity and new DPI. For example, doubling DPI calls for halving sensitivity to preserve their product. Do not carry that result into scoped or accelerated input without checking how those modes are handled.

Sources and scope

Source SDK · m_yaw

Public source snapshot; changes after this version may differ. 2026-11-03