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What to get in touch about

• Report a calculator that isn't working
• Report a result that looks wrong
• Suggest a new calculator or an improvement
• Ask a general question about the site

Helpful details to include

When reporting a problem with a calculator, include the calculator's name or page address, the values you entered, the result you got, and what you expected instead. That's usually enough to reproduce and fix an issue quickly.

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Have a question, suggestion, or feedback about one of our calculators? We'd be happy to hear from you.