Mouse DPI and Sensitivity: How to Set Up From Scratch

In short: DPI is how many "steps" the sensor sees per inch of mouse movement, and in-game sensitivity multiplies that step into a turning angle. For most games set DPI to 800 (or 1600), turn acceleration off and tune in-game sensitivity so a 180° turn takes a comfortable distance, usually 15–30 cm.

What is DPI?

DPI (dots per inch, also written CPI) shows how many units of movement the sensor registers per 1 inch (2.54 cm) of mouse travel. At 800 DPI one inch gives 800 units, at 1600 it gives 1600. The higher the DPI, the faster the cursor moves for the same hand movement.

DPI is not mouse "quality". A high number does not make a mouse better; it is just a step setting.

In-game sensitivity and eDPI

The game has its own sensitivity setting that multiplies DPI. The product is eDPI:

eDPI = DPI × in-game sensitivity

eDPI is only comparable within one game. To compare across games you need cm/360; the calculation and examples are in mouse pad for low sensitivity, and for CS2 more in eDPI in CS2.

Which DPI to choose?

• 800 DPI: the most common value in shooters, a convenient base.
• 1600 DPI: also popular, some find it smoother.
• 400 DPI: used by some players, but on modern sensors the difference from 800 is minimal.
• Very high values (3200 and above) are rarely needed for gaming; they can give small inaccuracies on some sensors.

On modern sensors the difference between 800 and 1600 is insignificant. The main thing is to pick a value and stop changing it, tuning sensitivity in the game instead.

Windows settings

1. Open "Mouse settings" → "Additional mouse options" → the "Pointer Options" tab.
2. Speed: leave it at the middle (6 of 11), the "honest" value with no multiplication.
3. Turn off "Enhance pointer precision": this is acceleration that changes distance based on movement speed.

Step-by-step method to find sensitivity

1. Set DPI to 800.
2. Choose a starting in-game sensitivity so cm/360 is about 25–40 cm (for CS2 roughly 1.3–2.0 at 800 DPI). This is only a starting point.
3. Do a 180° turn on the pad. If your hand reaches the edge or you have to lift the mouse, sensitivity is too low. If the crosshair "flies" and is hard to stop, it is too high.
4. Change sensitivity in small steps (about 10%).
5. Test for at least a week before changing again.
6. Do not change DPI every day: muscle memory forms slowly.

Sensitivity and grip

Movement range depends on grip. Fingertip grips usually go with higher sensitivity and palm with lower, see mouse grip. Lower sensitivity needs a larger pad.

Typical mistakes

• Chasing "what the pros use". Pros have their own technique and pad.
• Changing settings often. There is no time to adapt.
• Using different sensitivity in different games without calculating. Use cm/360.
• Forgetting to turn acceleration off.