Contact us
We read every message. The fastest way to reach us is by email: hello@example.com.
What to write to us about
Report a wrong result or a broken tool: tell us which tool, what you entered and what you expected. Suggest a new tool or a missing unit. Ask a privacy or legal question. Or tell us what would make a tool easier to use.
Good to know
We usually reply within a few working days. Because files are processed in your browser and never uploaded, we cannot recover or open a file for you, and we cannot see what you entered in a tool. Please do not send sensitive documents by email.