Contact us
Found a calculation that looks wrong? Want a calculator or country we don't cover yet? We'd love to hear from you. Reader feedback is how we keep our numbers accurate and decide what to build next.
Email us
The fastest way to reach us is by email:
hello@worldcalculators.org
(Email shown as hello [at] worldcalculators.org to reduce spam — the button above opens your mail app correctly.)
Reporting a calculation error
Accuracy matters to us, and country-specific standards can be subtle. If a result looks off, the more detail you give us, the faster we can verify and fix it. Please include:
- The calculator name and the page URL
- The exact values you entered (and any country/region setting)
- The result you got and the result you expected
- A source or formula for the expected result, if you have one
We review every error report and correct verified issues as quickly as we can.
Suggesting a calculator or country
We're always expanding our coverage. Tell us which calculator you'd like to see, or which country-specific standard (tax brackets, BMI thresholds, grading scales, units) you want us to add. Reader requests directly shape what we build next.
What to expect
We read every message. We prioritise verified calculation errors first, then calculator and country requests, then general questions. We're a small, ad-free team, so some replies may take a little longer — thank you for your patience.