We'd love to hear from you.

Bug reports, calculator suggestions, or general questions — we read every message and aim to reply within 2 business days.

Send us a message

We aim to reply to all messages within 2 business days. Complex bug reports may take slightly longer.

Please include the calculator name, the values you entered, the result you received, and the result you expected. Screenshots are welcome.

We love adding new tools. Tell us what you need — describe the calculation, the inputs, and what the output should be.

Check our FAQ section first — your question may already be answered there.