Contact Instant Calculator
Send questions, corrections, and accessibility feedback to the site support address.
Email support
Email support@instantcalculator.net with the page URL, the inputs you used, and the result you expected. Do not include passwords, payment details, or sensitive personal information.
What to include
- The calculator URL and browser/device if the issue is visual or interactive.
- The exact inputs and steps needed to reproduce a result.
- Whether your report concerns a formula, a current rule, an assumption, or the page content.