What this calculator does
This eDPI calculator multiplies your mouse DPI by your in-game sensitivity multiplier to give a single number, effective DPI, that describes how far the cursor or crosshair actually moves for a given hand movement. Two players can run completely different DPI and sensitivity settings and still aim at the same real-world speed if their eDPI matches, which is why the figure is used to compare setups across games, mice and players rather than looking at either number alone.
What is eDPI good for, in practice: swapping mice without losing your aim, or copying a pro player's settings correctly. A raw sensitivity value copied between two different DPI settings changes how fast the aim actually moves, but the same eDPI reproduces the same physical feel. This is also how most eDPI converters work between games, by holding eDPI constant and solving for the sensitivity that matches it at whatever DPI the new game or mouse uses.
The formula
Multiply the mouse DPI (dots per inch, how many counts the sensor reports per inch of physical movement) by the in-game sensitivity multiplier the game applies on top of that. The optional third field runs the calculation the other way: given a different DPI you want to move to, it divides the eDPI by that new DPI to return the sensitivity that keeps the same effective speed.
| Term | Meaning |
|---|---|
| DPI | Dots per inch: how many sensor counts the mouse reports for one inch of physical hand movement. |
| In-game sensitivity | The multiplier a game applies on top of the raw mouse counts, set inside its own settings menu. |
| eDPI | Effective DPI: DPI × in-game sensitivity, a single figure comparable across different mice and games. |
The inputs explained
| Field | What to enter |
|---|---|
| Mouse DPI | The DPI your mouse is currently set to, from its software or onboard button. |
| In-game sensitivity | The in-game sensitivity slider or multiplier value shown in that game's settings. |
| Compare at this DPI (optional) | Optional: a different DPI you want the equivalent sensitivity for, for example after switching mice. |
When to use it
Switching mice without losing your aim
A new mouse often ships set to a different default DPI. Working out the eDPI of the old setup first, then solving for the sensitivity that reproduces it at the new DPI, keeps the same physical feel through the swap.
Copying a settings list from another player
Settings lists usually give both DPI and in-game sensitivity together. Converting them to eDPI shows whether two listed setups actually play the same, since the same eDPI can be reached by many different DPI and sensitivity pairs.
Moving the same feel between games
Different game engines scale sensitivity differently, so a raw sensitivity number rarely transfers cleanly. Keeping eDPI constant while changing only the in-game sensitivity value is the more reliable way to carry a feel from one title to another.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How eDPI changes with mouse DPI at a fixed in-game sensitivity
The same 0.4 in-game sensitivity across a range of common mouse DPI settings.
| Mouse DPI | eDPI | Sensitivity needed for the same eDPI at that DPI |
|---|---|---|
| 400 | 160.00 | 0.2000 |
| 800 | 320.00 | 0.4000 |
| 1,200 | 480.00 | 0.6000 |
| 1,600 | 640.00 | 0.8000 |
| 2,400 | 960.00 | 1.200 |
| 3,200 | 1,280.00 | 1.600 |
How eDPI changes with in-game sensitivity at a fixed mouse DPI
An 800 DPI mouse across a range of in-game sensitivity multipliers.
| In-game sensitivity | eDPI | Sensitivity needed for the same eDPI at that DPI |
|---|---|---|
| 0.20 | 160.00 | 0.1000 |
| 0.40 | 320.00 | 0.2000 |
| 0.60 | 480.00 | 0.3000 |
| 0.80 | 640.00 | 0.4000 |
| 1.00 | 800.00 | 0.5000 |
| 1.50 | 1,200.00 | 0.7500 |
Questions
What is eDPI?
Effective DPI, the mouse DPI multiplied by the in-game sensitivity multiplier. It reduces two settings that only mean something together into one number that describes how fast the aim actually moves.
What eDPI do professional players use?
It varies widely by game, mouse and personal preference, and changes over time, so quoting a single figure here would go stale. Look up a specific player's current listed settings and run their DPI and sensitivity through this calculator rather than relying on a remembered number.
Is a lower eDPI always better?
No, it is a matter of playstyle rather than a fixed target. Lower eDPI generally means finer, slower aim control that favours precision, while higher eDPI means faster turns at the cost of fine control. Neither is objectively correct.
Does eDPI account for polling rate or mouse acceleration?
No. It only combines DPI and in-game sensitivity. Polling rate (how often the mouse reports position) and any acceleration curve applied by the game or operating system affect feel too, but are separate settings this figure does not capture.
To check a download or connection speed alongside your gaming setup, see the Mbps download time calculator.