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Usually within 48 hours, sometimes less. If you've sent a tool suggestion or flagged a typo, it might take a day or two longer while we dig into it — but we do read everything.
Please do. Pick "Typo or Correction" from the subject dropdown, then tell us which calculator you were using, what dates you plugged in, and what result you got versus what you expected. That's genuinely all we need to track it down.
Yes — it's free and takes about a minute to set up. Head to the Embed Widget page, tweak it to match your site, and grab the code. If you need something beyond what's there, drop us a note using the "Partnership or Advertising" option and we'll talk.