Contact

Questions, bug reports or a tool you'd like us to build? We read every message and reply as soon as we can, usually within a few days.

What you can write to us about

• Bug reports: a tool that doesn't work as expected (please tell us your browser and what you did).
• Feature and new tool requests.
• Corrections to calculators or information on the site.
• Privacy questions and data requests, advertising or partnership inquiries.

Please don't email files or personal documents. Our tools run in your browser, so we never need your files to help you.