Contact Us

Questions, corrections, and calculator suggestions are all welcome.

The fastest way to reach us is by email:

Reporting a calculator error

If you believe a result is incorrect, please include:

The name of the calculator (or a link to the page)
The exact inputs you entered
The result you got, and the result you expected

We take accuracy seriously and investigate every report.

Suggesting a calculator

We add new calculators regularly. If there's a calculation you wish existed here, tell us what it should do and we'll consider it for an upcoming release.

Advertising & partnerships

For advertising or partnership inquiries, use the same email address with "Partnership" in the subject line.