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Contact
We'd love to hear from you. Use the email below for bug reports (a calculator giving a wrong result, a page that won't load, a broken link), suggestions for new calculators, corrections to formulas, or general feedback.
Email
We aim to reply within a few business days. For bug reports, please include the calculator name, the inputs you used, the result you got, and the result you expected.
What we can't help with
We can't give personalised financial, medical, legal, or tax advice. The calculators here are general educational tools — for advice specific to your situation, please consult a qualified professional.