Terms of use

Real Size Ruler is a free tool provided as is. By using it you agree to these terms.

Accuracy

On-screen measurements depend on your screen, browser and calibration. Readings are typically within 1 to 2% once calibrated, but they are not a substitute for a certified measuring instrument. Don’t rely on them where precision is critical, such as medical, legal or engineering use.

Your screen

Place objects on your screen gently. We’re not responsible for scratches or damage caused by measuring objects against a display.

Changes

We may update the tool and these terms at any time. Continued use means you accept the current version.