Contact MM Ruler Online
Questions, bug reports or ideas for new tools? Send us a message and we will get back to you as soon as we can.
- Bug reportsTell us your device, browser and what went wrong. A screenshot helps.
- Accuracy feedbackIf the ruler looks off after calibration, tell us the device and screen size.
- SuggestionsIdeas for new measuring tools or features are welcome.
- Business and otherFor anything else, use the same address and say what it is about in the subject line.
Before writing, you may find the answer in the FAQ on the mm ruler online page. You can also read about the site, try the printable mm ruler or the PPI calculator, or see our privacy policy.