Contact us

We’d love to hear from you, whether it’s a bug report, a feature idea or a question.

We usually reply within two business days.

Reporting a wrong result

If a calculator gives a date you think is wrong, please include the page address, the numbers or dates you entered, the result you saw, and your time zone. Most “wrong” results come from counting today as day 1, or from weekends and public holidays in business-day counts, so those details help us check quickly.

Suggesting a calculator

Tell us what you are trying to work out, for example a notice period, a visa stay or a pregnancy due date, and we will look at adding it.