Contact Us
Have a question, found an error in our formulas, or want to suggest a new calculator? We'd love to hear from you.
The fastest way to reach us is by email:
What We Can Help With
- Formula errors or incorrect results — please include your inputs and expected output
- New calculator suggestions — describe what material and what output you need
- General feedback on the site or calculators
- Affiliate or partnership inquiries
Response Time
We typically respond within 2–3 business days. For formula errors, we aim to investigate and respond within one business day.