Contact Us
Have feedback, found a bug, or want to suggest a new calculator? We'd love to hear from you.
Email Us
The best way to reach us. We read everything and try to respond within a few days.
reach@carmath.fyiBug Reports
Found a calculation error or something broken? Let us know what went wrong. Screenshots help!
Calculator Suggestions
Have an idea for a calculator we should build? Tell us what you need and why.
Formula Questions
Curious about how a calculation works? Check our methodology pages first, then ask away.
General Feedback
Love it? Hate it? Have ideas to make it better? We're always looking to improve.
We're a small team, so it might take a few days to get back to you. For urgent calculator errors affecting safety, include "URGENT" in your subject line.