Contact
Email hello@actualringsize.com. One person reads it, so plain email works better than a form.
Especially worth reporting
- A conversion in the chart you believe is wrong — please say which standard you are checking against.
- Calibration that will not match your card, with the device and browser you are using.
- A printed sheet that comes out the wrong size after printing at 100%.
- Anything unreadable on your screen or with a screen reader.
Corrections to the chart get priority. The whole value of the page is that the numbers are right, so a credible report that one is not will be checked the same day.