Contact Us
Send feedback, report issues, or suggest new calculators
Redicalc is built and maintained by a small team that genuinely cares about getting the numbers right. With more than 160 free calculators spanning finance, health, fitness, cooking, construction, education, travel and more, we rely heavily on feedback from the people who use these tools every day. If something looks off, if a result doesn't match what you expected, or if there's a calculation you wish existed, we want to hear about it.
Suggest a calculator
Tell us what you need to work out and we'll consider building a dedicated, easy-to-use tool for it.
Report an issue
Found a result that looks wrong or a feature that isn't working? Let us know and we'll investigate and fix it.
Share feedback
Ideas on how to make a calculator clearer, faster or more useful are always welcome.
Send us a message
Fill out the form below and we'll get back to you as soon as we can. There's no such thing as a question that's too small.
A note on how we use our calculators
Every calculator on Redicalc is designed to give you a fast, accurate starting point backed by the same formulas and standards used by professionals in each field. Where relevant, we cite the sources and methods behind a calculation so you can understand not just the answer but how it was reached. That said, our tools are intended for general information and planning. For decisions with significant financial, medical, legal or safety consequences, we always recommend confirming the result with a qualified professional who knows your specific situation.
We're constantly refining existing calculators and adding new ones based on what users ask for, so your message directly shapes what Redicalc becomes. Thank you for taking the time to help us improve.
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