Contact

The fastest way to reach us is by email:

hello@calc.one

What to include

• Bug reports — which calculator, what you entered, what you expected, what you saw
• Suggestions — which calculator you'd like to see (we add new ones every week)
• Corrections — flag any formula or content error and we'll fix it within 48 hours
• Partnership / licensing — calculators can be embedded on other sites under license

We don't run a phone line and don't have a support form. Email gets a faster answer because it goes straight to the people maintaining the site.