Contact us
Have a question, found a calculation that looks off, or want to suggest a new calculator? We read every message. Fill in the form below and we'll get back to you by email.
Typical topics: bug reports, formula corrections, calculator requests, advertising and partnership enquiries, and press.
Support email: support@numbarn.com
Typical response time: 1-3 business days.
Calculator error reports are prioritized above feature requests.