offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

DPI Calculator

Measure your mouse’s true DPI by combining sensor counts with the physical distance moved.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Mouse counts (CPI)

Physical distance (inches)

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.