What Is eDPI?
Effective DPI (eDPI) is your mouse's DPI multiplied by your in-game sensitivity slider. It exists because neither number means much on its own - within the same game and look mode, a DPI of 800 with sensitivity 2.0 has the same nominal eDPI as 1600 DPI with sensitivity 1.0. eDPI collapses both settings into one comparable value, so two players with completely different raw settings can confirm they're actually aiming at a similar speed.
How to Use This Calculator
- Choose the game context. Select your game label (VALORANT, Counter-Strike 2, Apex Legends, Overwatch 2, or Custom). This labels results only; the calculator never treats sensitivity sliders from different games as equivalent units.
- Enter your real mouse DPI and in-game sensitivity. Check the DPI setting in your mouse software and the game's hipfire/look sensitivity setting. DPI must be a positive integer and the sensitivity must be a positive decimal. The calculator cannot read these settings automatically.
- Read the calculated eDPI. It is DPI multiplied by game sensitivity. The result is not a measurement of your mouse hardware, a precision score or a universal Low/Medium/High ranking.
- Match another mouse DPI. In the equivalent-sensitivity panel, type another DPI. Leave target eDPI blank to preserve your current result, or enter a different target. Click Use Alternative Setup to update the primary fields.
- Compare multiple setups. Add up to four profiles, choose a saved profile as the reference and inspect the percentage difference. Percentage comparisons display only for the same selected game. Profile labels and settings stay in page memory, not on a server.
- Export or reset. Copy a summary or download a local JSON report. Reset restores illustrative sample inputs and clears saved profiles.
Quick examples are illustrative arithmetic, not professional-player data or recommended game settings. Aim modes, game-specific yaw, acceleration, smoothing and scope multipliers can change actual turning distance.
How the Calculation Works
eDPI = Mouse DPI × In-game Sensitivity
That's the entire formula - no hidden constants. A mouse set to 800 DPI with an in-game sensitivity of 0.4 gives an eDPI of 320. The same feel could come from 400 DPI at 0.8 sensitivity, or 1600 DPI at 0.2 sensitivity - all three produce an eDPI of 320 and move your crosshair the same physical distance for the same mouse movement, within that one game.
Understanding Your Result
The number is a calculated sensitivity product, not a universal aim category. For the same game and aim mode, compare two values using the ratio or percentage change: (new eDPI ÷ old eDPI − 1) × 100%. If you change only mouse DPI, you can use new sensitivity = target eDPI ÷ new mouse DPI to preserve the nominal result.
| Example within the same game | Calculated eDPI | Interpretation |
|---|---|---|
| 800 DPI × 0.4 | 320 | Reference example |
| 1600 DPI × 0.2 | 320 | Same numeric eDPI in this game |
| 800 DPI × 0.5 | 400 | 25% higher numeric eDPI than 320 |
Identical eDPI numbers from different games must not be compared as if the sliders share the same yaw or angular scale. There is no single Low/Medium/High eDPI threshold that applies universally to every game.
Why eDPI Alone Isn't the Full Picture
eDPI tells you the sensitivity relationship between two setups, but it doesn't account for a game's yaw value - how many degrees the camera actually turns per count of mouse movement, which differs from game to game. Two games can report the identical eDPI and still feel noticeably different to turn in. For a physical, game-independent comparison, use the cm/360 Calculator instead, which factors in each game's turn rate.
Common Mistakes to Avoid
- Comparing eDPI across different games directly - the same eDPI can produce a different turn speed in each title because of differing yaw values.
- Ignoring mouse input processing - OS pointer speed and acceleration can affect games that use cursor-style input; games using raw mouse input often bypass these adjustments. The eDPI product alone cannot tell which path a particular game uses.
Frequently Asked Questions
What eDPI do professional players use?
It varies widely by player and game, but a large share of competitive FPS players land somewhere in the 300–500 eDPI range, generally correlating with a low-to-medium DPI mouse and a sensitivity under 1.0.
Is a lower eDPI always better for aim?
Not universally - lower eDPI generally rewards precision at the cost of turn speed, while higher eDPI trades precision for faster flicks and less required desk space. The right value depends on play style.
Should I match eDPI exactly when switching games?
Matching eDPI is a reasonable starting point, but because yaw differs between games, matching your actual cm/360 distance with the cm/360 Calculator gives a truer match to how your aim will physically feel.
Why eDPI Is More Useful Than DPI Alone
Comparing raw DPI between two players tells you very little, since one player at 400 DPI with a high in-game sensitivity can have identical cursor movement to another at 1600 DPI with a much lower multiplier. Effective DPI, calculated by multiplying DPI by in-game sensitivity, normalizes this into a comparable number reflecting real mouse movement for the same turn distance. This matters when trying to replicate a pro player's exact setup, since copying only their DPI without matching in-game sensitivity produces a completely different feel - sometimes by a factor of two or more depending on the combination involved.
Conclusion
eDPI is the fastest way to sanity-check whether two sensitivity setups are in the same ballpark. For a more precise, physical comparison - especially across different games - follow up with the cm/360 Calculator or the Sensitivity Converter.