Contact us

Found a bug in a calculator, want to suggest a tool, or have a question about how we compute something? We read every message and usually reply within two working days.

Direct email

Prefer email? Reach us directly at [email protected]. Please include the name of the calculator and, where relevant, the numbers you entered so we can reproduce the issue.

What to expect

CalcCafe is an independent project maintained by a small editorial team. Corrections to a calculation are prioritised and, once verified against the primary source, the affected tool is updated and its "last updated" date revised. Tool suggestions are reviewed against demand and the availability of an authoritative formula or standard.

For tax or medical decisions, please consult a qualified professional — we provide educational estimates, not advice.