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We're trying hard to make this the best free calculator site on the web. If you see something wrong — a bug, a bad calculation, or something that could work better — please tell us.
If you see it, say it
This site is free for everyone — no paywalls, no accounts, no ads stuffing your results. We rely on people like you to help us catch what we miss. Found a typo? Wrong formula? Something confusing? Let us know and we'll fix it.
Every report is reviewed. Because this is a free project, we can't always respond individually — but we read every submission and fix what we can.
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