Contact

Found an error, or have an idea for a new tool? Email us at hello@example.com. We read every message.

What to include

• The page address where you saw the problem.
• The numbers you typed and the result you expected.
• A link to your source if you think a formula is wrong.

What we can help with

We are glad to hear about mistakes, broken links and ideas for new tools. We cannot give medical advice or write a training plan for you. For pain or an injury, see a doctor or a physical therapist.

You can read how the tools work on the About page. How we handle data is on the Privacy page.