Quick answer
eDPI = mouse DPI × in-game sensitivity. A mouse at 800 DPI with a sensitivity of 0.35 has an eDPI of 280.
Enter the mouse DPI and the in-game sensitivity. The calculator returns eDPI.
Related tools: IP Subnet Calculator: IPv4 network, broadcast, mask and host range from an address and CIDR prefix. Download Time Calculator: Time to download a file at a given speed. Binary Calculator: Add, subtract, multiply, divide or apply bitwise operations to binary numbers.
How to use the eDPI Calculator
- Enter mouse DPI (above 0).
- Enter in-game sensitivity (above 0).
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Mouse DPI | A number | > 0 |
| In-game sensitivity | A number | > 0 |
Formula and method
Formula
eDPI = DPI × sensitivity
IEEE-754 double precision; shown to the decimals indicated.
Lets you compare sensitivity across settings; games scale sensitivity differently, so compare within the same game.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Mouse DPI = 800; In-game sensitivity = 0.35.
| Result | Value |
|---|---|
| eDPI | 280 |
Example 2
Inputs: Mouse DPI = 1600; In-game sensitivity = 0.5.
| Result | Value |
|---|---|
| eDPI | 800 |
The first line is the headline result (eDPI). IEEE-754 double precision; shown to the decimals indicated.
Comparing settings
Two players with 400 DPI at 0.70 and 800 DPI at 0.35 both have an eDPI of 280 and turn the crosshair the same distance for the same hand movement within the same game. Different games scale sensitivity differently, so eDPI compares settings within one game.
Typical values
Many tactical shooter players use around 200 to 400 eDPI; there is no right value. Lower sensitivity favours precision, higher favours turning speed.
How the result changes with mouse DPI
Holding every other input at the first worked example, this table changes only mouse DPI. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Mouse DPI | eDPI |
|---|---|
| 400 | 140 |
| 800 | 280 |
| 1600 | 560 |
| 3200 | 1,120 |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Mouse DPI: entering "0" shows "Mouse DPI must be greater than 0." beside that field and no result.
- In-game sensitivity: entering "0" shows "In-game sensitivity must be greater than 0." beside that field and no result.
Choosing between the eDPI Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [IP Subnet Calculator](/technology/ip-subnet-calculator/) | iPv4 address and cIDR prefix length | Network |
| [Download Time Calculator](/technology/download-time-calculator/) | file size, size unit and connection speed | Time |
| [Binary Calculator](/technology/binary-calculator/) | first binary number, second binary number and operation | Result |
| [Hex Calculator](/technology/hex-calculator/) | first hex number, second hex number and operation | Result |
| [Decimal to Hex Converter](/technology/decimal-to-hex-calculator/) | input base and value | Hexadecimal |
Assumptions and limitations
- Comparable only within one game
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for mouse DPI and in-game sensitivity to confirm this.
Frequently asked questions
Does eDPI work across games?
Not directly, since games scale sensitivity differently.
Does polling rate matter?
No. eDPI uses only DPI and in-game sensitivity; polling rate affects responsiveness, not aim speed.
Should I use a high DPI?
A high DPI by itself changes nothing if the product stays the same.
What does the eDPI Calculator calculate?
Effective DPI from mouse DPI and in-game sensitivity. It returns eDPI.
What formula does the eDPI Calculator use?
eDPI = DPI × sensitivity. Lets you compare sensitivity across settings; games scale sensitivity differently, so compare within the same game.
What do I need to enter in the eDPI Calculator?
You enter Mouse DPI and In-game sensitivity.
How is the result rounded or limited?
IEEE-754 double precision; shown to the decimals indicated. Comparable only within one game.
What is an example of a eDPI result?
With mouse DPI 800 and in-game sensitivity 0.35, the eDPI is 280.
Related calculators
- IP Subnet Calculator — IPv4 network, broadcast, mask and host range from an address and CIDR prefix.
- Download Time Calculator — Time to download a file at a given speed.
- Binary Calculator — Add, subtract, multiply, divide or apply bitwise operations to binary numbers.
- Hex Calculator — Add, subtract or multiply hexadecimal numbers.
- Decimal to Hex Converter — Convert integers between binary, octal, decimal and hexadecimal.
- Hex to Text Converter — Decode hexadecimal bytes as UTF-8 text.
Sources
- Common definition used on this page. No single authoritative standard defines it, so the exact formula is stated in the formula section above
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.