Contact
Questions, corrections and calculator ideas are all welcome.
The best way to reach us is by email:
We usually reply within two working days.
Reporting a mistake
If a result looks wrong, please include:
- the calculator's name or page address,
- the numbers you entered,
- the result you got and the result you expected.
That lets us reproduce it and fix it quickly.
Suggesting a calculator
Tell us what you're trying to work out and where you'd use it. Many of our calculators started as reader suggestions.
Please note
We can't give personal financial, medical, legal or tax advice. For decisions about your own situation, please talk to a qualified professional.