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Something wrong, missing or unclear? Tell us — it genuinely shapes what gets fixed and built next.
Get in touch
Found a calculation that looks wrong? Spotted a typo, a broken layout on your device, or something that fails with a screen reader? Want a calculator that is not here yet? All of that is genuinely useful, and all of it gets read.
No email app set up on this device? Use Copy address and paste it into Gmail, Outlook or whichever inbox you use.
What helps when reporting a problem
- Which calculator, and the exact numbers you entered.
- What you expected, and what you actually saw.
- Your browser and device, if the problem is about layout or a control that will not respond.
- A screenshot, if that is quicker than describing it.
A shared link is often the fastest report of all: hit Share on the calculator and paste the link into your email. It carries your exact inputs, so the problem can be reproduced immediately.
Suggesting a calculator
Requests do shape what gets built. The ones most likely to happen are calculations people need often, where existing tools are poor, and where the maths can be done honestly without pretending to more precision than it has. Tell us what you would use it for, not just what to call it.
What we cannot do
We cannot give financial, medical, legal or academic advice, or tell you what to do with a result. A BMI figure is not a diagnosis, a loan schedule is not a mortgage offer, and a grade projection is not a promise from your instructor. For decisions that matter, talk to someone qualified who can see your whole situation.
No newsletter
There is no mailing list to join and no marketing sequence waiting for your address. Email us and you get a reply from a person, and that is the whole of it.