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Questions, bug reports and suggestions are all welcome. We read every message.
Our contact address will be published here shortly.
Helpful details to include
- Your device model and screen size, for example “iPhone 15” or “14-inch laptop”.
- Your browser and its zoom level.
- The calibration method you used and what the ruler measured versus the real size.
Before writing about accuracy, check that browser zoom is set to 100% and try the Credit Card calibration. That fixes most measurement issues.
More information
Learn about Real Size Ruler, read how we handle data in the privacy policy, or review the terms of use.