Mouse Tools & Calculators
A collection of practical calculators for measuring your mouse DPI, converting sensitivity between games, sizing your mousepad and checking cursor speed. Everything runs in your browser — no downloads required.
Mouse DPI Checker
Measure your mouse's actual DPI (counts per inch) by moving a known physical distance across your mousepad. Useful for verifying that a driver setting matches the real sensor output, and for detecting surfaces that cause tracking loss.
How accurate is this measurement?
This method compares the distance your cursor travels on screen against the physical distance you moved your mouse. It's reliable for spotting large discrepancies (e.g., a driver saying "1600 DPI" while the sensor actually reports ~1450) but has three inherent limitations:
- Your hand's accuracy. Ruler placement and consistent straight-line movement are the biggest error sources. Use a physical ruler taped to your mousepad.
- Screen PPI. If your system applies display scaling (Windows 125%, macOS Retina), the browser may report logical rather than physical pixels. The default 96 PPI assumes a standard unscaled monitor; check your display specs for an accurate number.
- Pointer acceleration. If Windows "Enhance pointer precision" or macOS mouse acceleration is enabled, results will be non-linear. Disable acceleration before testing.
More Mouse Tools
Quick calculators and guides — no setup needed.
Convert your mouse sensitivity between games. Enter your DPI and sens in the source game, then pick the target game.
Find the right mousepad size based on your DPI and in-game sensitivity.
Measure how fast your cursor moves across the screen. Move your mouse as fast as possible within the box for 3 seconds.
Recommended Mousepads
The surface your mouse glides on matters more than most people realise. Optical sensors rely on a consistent texture to track accurately, and a good pad will give you predictable friction, protect your mouse feet, and stop tracking from dropping out on smooth desks.
Disclosure: As an Amazon Associate, MouseTester.uk earns from qualifying purchases. The links below are affiliate links — they cost you nothing extra and help keep this site free. We only recommend products we'd use ourselves.
Logitech G240
A 340×280 mm cloth pad with a low-friction weave that's become a community reference. Good for mid-to-high DPI users who make short, controlled movements and want predictable glide without excessive stopping power.
- Cloth surface, rubber base
- Medium thickness (~1 mm)
- Good for 800–1600 DPI, wrist/claw grip
SteelSeries QcK
The most widely-used gaming pad in the world for a reason — a moderate-friction cloth surface that works with nearly every sensor. Comes in sizes from small up to 900 mm XXL, so whatever 360° distance your sens needs, there's a matching fit.
- Cloth surface, non-slip rubber base
- Sizes: S (250×210), M (320×270), L (450×400), XL (900×400)
- Balanced control/speed friction
Razer Gigantus V2
A thick, textured cloth pad available up to 3XL (1200×550 mm). Useful for low-DPI arm aimers who need lots of sweeping room, and also doubles as a full desk mat. Thicker foam than the QcK for more comfortable wrist support.
- Cloth surface, thick (~3 mm) foam base
- Sizes up to 1200×550 mm
- Best for 400–800 DPI, arm aimers
Logitech G440
A rigid polymer hard pad for people who prefer low friction and minimal stopping power. Lasts longer than cloth (doesn't fray or absorb sweat) and is easy to wipe clean, at the cost of slightly faster mouse-foot wear. Best paired with low-DPI arm aiming.
- Hard plastic surface, rubber base
- 340×280 mm
- Low friction — requires control discipline
Corsair MM300 Extended
A 930×300 mm extended cloth pad that covers both keyboard and mouse areas. Stitched edges stop fraying, which is the usual failure point on extended pads. Practical for people whose workspace doubles as a gaming setup, or who just want a single clean surface across the whole desk.
- Cloth surface, textured weave
- 930×300 mm (covers keyboard + mouse)
- Stitched edges, rubber base
VicTsing / Trust basic cloth pad
For under a tenner, any plain stitched-edge cloth pad from a mainstream brand will outperform a bare desk. Look for a non-slip rubber base, stitched edges and dimensions that match your 360° distance from the Mousepad Size Guide above.
- Cloth surface, any reputable brand
- Pick size from the guide above
- Stitched edges prevent fraying