Change your mouse's DPI and your aim changes with it, unless the in-game sensitivity moves the other way by the same amount. This sensitivity converter works out that new figure, so a new mouse or a new DPI setting turns exactly as far as the old one did.
Put in the DPI and sensitivity you use now and the DPI you are moving to. It works out the new sensitivity, your eDPI, and how many centimetres of mouse travel make one full turn in Counter-Strike 2 and the other games whose makers publish how far they turn per count. Every figure it supplies names its source, and the list of what it cannot tell you, including which games it does not cover, is below the answer.
In this guide
The sensitivity converter
The DPI (or CPI) set in your mouse's own software, or on its DPI button. 400, 800 and 1600 are common settings.
The sensitivity in the game's mouse settings, or the number after sensitivity in its console.
The DPI you are moving to: a new mouse, or a new setting on the same one. Put the same figure as above to keep the DPI you have.
How that is worked out, line by line
- Degrees turned per mouse count (0.022 games)0.0440 degrees
- Mouse travel for one full turn, in inches10.23 in
- eDPI at the new DPI1,600
- Full turn at the new DPI (cm/360)26.0 cm
On those numbers you are in the A full turn fits on a medium pad band, which is the section below.
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Where every number here comes from
No part of this was measured on a bench here. This site works from published specifications and from what owners report, and every number below is either one you typed in or a published figure with its source named next to it.
The figures this page supplies
- Degrees turned per mouse count at sensitivity 1 (m_yaw): 0.0220 degrees. The default of the m_yaw setting in the developers' own released code and wiki: 0.022 in Quake (id Software, cl_main.c), Quake III Arena (cl_main.c), Half-Life (Valve, cl_dll/input.cpp), the Source SDK 2013 games such as Team Fortress 2 (in_mouse.cpp), and Counter-Strike 2 (Valve Developer Community's list of CS2 console variables).
- Degrees in one full turn: 360 degrees. A full circle is 360 degrees.
- Centimetres in an inch: 2.5400 cm. The international inch is defined as 2.54 cm (NIST, the 1959 international yard and pound agreement).
Why each step is the step it is
- Sensitivity to use at the new DPI:
sens * dpi / new_dpi. The game turns by counts x sensitivity x yaw, and a mouse sends DPI counts for every inch it moves, so the turn per inch is DPI x sensitivity x yaw. Keeping that the same at a new DPI means the sensitivity changes by old DPI / new DPI; the yaw is on both sides and cancels. - Your eDPI now:
dpi * sens. ZOWIE's definition: eDPI = DPI x in-game mouse sensitivity. It compares setups within one game, since a different yaw gives the same eDPI a different turn. - Degrees turned per mouse count (0.022 games):
sens * yaw. Sensitivity x m_yaw, the multiplication the Quake, Half-Life and Source code does to every count the mouse sends. - Mouse travel for one full turn, in inches:
turn / (dpi * sens * yaw). 360 degrees divided by the degrees turned per inch, which is DPI x sensitivity x yaw. - Mouse travel for one full turn (cm/360):
in360 * cm_in. The inches above, at 2.54 cm to the inch. This is the figure players call cm/360. - eDPI at the new DPI:
new_dpi * new_sens. The new DPI x the new sensitivity. It matches the eDPI now, which is the check that the feel has not changed. - Full turn at the new DPI (cm/360):
turn / (new_dpi * new_sens * yaw) * cm_in. The same full-turn sum on the new settings. It matches the line above it, as it should.
What this cannot tell you
Every calculator has an edge, and a page that hides its edge is worse than no page at all. Here is this one's.
- It is arithmetic on the DPI and sensitivity you give it. No mouse or game was run for it, and this site has not used these settings itself.
- The full-turn figures are for games that turn 0.022 degrees per count at sensitivity 1: Counter-Strike 2, Half-Life, Team Fortress 2 and the other Source games, Quake and Quake III Arena. It does not convert to or from Valorant, Overwatch 2, Fortnite, Apex Legends, Rainbow Six Siege, Call of Duty, PUBG or Marvel Rivals, because no figure from their makers could be found for it, and a guessed one would give a wrong answer.
- The new-DPI sensitivity holds in any game whose turn is a straight multiple of its sensitivity, but only inside one game: it does not move a setting from one game to another.
- It assumes mouse acceleration is off and raw input is on. With acceleration, how far you turn depends on how fast you move, and no fixed figure describes it.
- Zoomed or scoped aim uses its own sensitivity in these games, so the figures are for aiming without zoom.
- A mouse's real counts per inch can differ a little from the setting printed in its software, and this page cannot see that difference.
What that full turn means for your mouse pad
These follow from the answer above and nothing else. Each heading below covers one span of results, so read the one the calculator pointed you at and ignore the rest.
A full turn fits on a medium pad
One full turn takes no more mouse travel than the width of a medium pad, which SteelSeries sizes at 320 mm for its QcK. Most desks have room for this, and a quick setting like this one usually aims with the wrist. Check the size on a listing before buying, since the QcK is sold in several.
SteelSeries QcK Mouse Pad Worth It in 2026? 5 Pads Ranked covers this range in full.
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A full turn needs a large pad
Wider than a medium pad and within the 450 mm SteelSeries gives its large QcK. A setting this slow usually aims with the forearm, which wants the extra room on both sides of the mouse.
SteelSeries QcK Mouse Pad Worth It in 2026? 5 Pads Ranked covers this range in full.
Logitech G305 vs Razer Viper 2026 Honest Comparison covers this range in full.
A full turn needs an extended pad
Wider than a large pad, and within the 900 mm of an extended XXL pad that runs under the keyboard too. Measure the desk first: a pad that hangs over the edge curls. A light mouse helps at settings this slow, since the whole arm moves it.
Logitech G305 vs Razer Viper 2026 Honest Comparison covers this range in full.
SteelSeries QcK Mouse Pad Worth It in 2026? 5 Pads Ranked covers this range in full.
Wider than an extended pad
One full turn takes more mouse travel than even a 900 mm pad holds, so turning round will mean lifting the mouse and putting it back. That is a choice some players make on purpose; if it is not yours, a higher sensitivity or DPI brings the turn back onto the pad.
If you are matching a setting from another game, check which game it came from first: the full-turn figures here are for the games that turn 0.022 degrees per count, and a figure from any other game will not carry across. A sensitivity converter can only be as right as the DPI you give it, so read it from the mouse's own software rather than the box.
Questions about the sensitivity converter
How do I convert my sensitivity to a new DPI?
Multiply the sensitivity by the old DPI and divide by the new one. At 800 DPI and a sensitivity of 2, moving to 1600 DPI needs a sensitivity of 1, and the eDPI stays at 1,600, so a full turn is still 26 cm of mouse travel. Going the other way, from 1600 DPI at 1 to 400 DPI, the sensitivity becomes 4. This sensitivity converter works the same sum for any DPI pair.
How is eDPI calculated?
eDPI is the mouse's DPI multiplied by the in-game sensitivity, which is how ZOWIE, a mouse maker, defines it. 800 DPI at a sensitivity of 2 is an eDPI of 1,600, and so is 400 DPI at 4, which is why two players on different DPI can have the same aim. eDPI compares setups within one game only: a game that turns a different amount per count gives the same eDPI a different feel.
How far do I move the mouse for a full 360 turn?
In Counter-Strike 2 and the other games that turn 0.022 degrees per count at sensitivity 1, divide 360 by DPI x sensitivity x 0.022 to get inches, then multiply by 2.54 for centimetres. At 800 DPI and a sensitivity of 2, each count turns 0.044 degrees and a full turn is 10.23 inches, or 26 cm. At 400 DPI and 1.5 it is 69.3 cm, wider than a large pad, so turning round in one sweep needs an extended one.
Can this sensitivity converter change CS2 settings to Valorant or Overwatch?
No. Moving a setting between games needs how far each game turns per mouse count, and for Valorant, Overwatch 2, Fortnite, Apex Legends and the other games outside Valve's and id Software's, no figure from the game's own maker could be found. Converters that list them use figures worked out by players, and they do not all agree. This page sticks to what its makers publish: the DPI change, the eDPI, and the full turn in the games that use 0.022.
Why is a CS2 sensitivity the same in Quake and Half-Life?
Because all of them turn the view by mouse counts x sensitivity x 0.022 degrees. id Software's released Quake and Quake III Arena code and Valve's Half-Life and Source code set that 0.022 as the default of the m_yaw setting, and Valve's own list of Counter-Strike 2 variables gives the same default. So a sensitivity of 2 at 800 DPI is a 26 cm turn in each of them, as long as m_yaw has been left at its default and acceleration is off.
Sources
- id Software: Quake source code, cl_main.c and in_win.c: Sets m_yaw to 0.022, and in_win.c turns the view by m_yaw x sensitivity x each mouse count, which is the whole formula this page uses.
- id Software: Quake III Arena source code, cl_main.c: Sets m_yaw to 0.022 and mouse acceleration off by default.
- Valve: Half-Life SDK, cl_dll/input.cpp: Registers m_yaw with a default of 0.022 for Half-Life and the GoldSrc games.
- Valve: Source SDK 2013, in_mouse.cpp: Declares m_yaw, the mouse yaw factor, at 0.022 for the Source games such as Team Fortress 2.
- Valve Developer Community: list of Counter-Strike 2 console commands and variables: Lists m_yaw, the mouse yaw factor, with a default of 0.022 in Counter-Strike 2.
- ZOWIE by BenQ: eDPI calculation method for FPS games: A mouse maker's own definition: eDPI = DPI x in-game mouse sensitivity.
- SteelSeries: what DPI and CPI mean: A mouse maker's explanation that CPI means counts per inch and that DPI and CPI are used to mean the same thing, which is why DPI is the counts the game receives per inch.
- SteelSeries: which mousepad is right for you: Publishes the QcK sizes this page's mouse pad bands use: medium 320 x 270 mm, large 450 x 400 mm, XXL 900 x 400 mm.
- NIST: the international inch: Explains that the international inch, used since 1959, is defined as 2.54 cm.
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