We read everything, and we especially want to hear about wrong results.
CalcHub is a product of Adiram.
Reporting an incorrect result
Please include: which calculator, the exact values you entered, the result you got, and the result you expected (with your source, if you have one). That combination lets us reproduce the problem in minutes instead of days.
Requesting a calculator
Tell us the calculation and, if you can, the formula or the official source it comes from. Requests that several people ask for get built first.
Business enquiries
Advertising, partnerships and press: same address, with "Business" in the subject line.
We aim to reply within 2-3 business days.