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By Tahir Zaman·Reviewed by the Calculate All Editorial Team·Published ·Updated

Feedback, corrections, calculator requests or partnership ideas — we read every message.

Email is the fastest way to reach us

The simplest way to contact Calculate All is email: hello@calculateall.surge.sh. The form below composes the message in your own email app — nothing is sent anywhere until you press send, and we never see your details unless you choose to share them.

Pressing the button opens your email app with the message pre-filled, addressed to hello@calculateall.surge.sh.

What to include

  • Corrections: the page URL, the number you think is wrong, and the number you expected (with your source if you have one). Screenshots help.
  • Calculator requests: what you want to compute, the inputs you'd enter, and what the answer should look like. Popular requests get built first.
  • Bug reports: your device, browser, and the exact steps to reproduce the problem.
  • Partnerships: who you are, what you're proposing, and why it's useful for our readers.

Response times

We read every message. Corrections and bug reports are triaged first — verified errors are typically fixed within a few days and the page's "Updated" date is changed to reflect it. Feature requests are batched into our build queue; partnerships are reviewed weekly.

Before you write

  • Check the calculator's "How it's calculated" section and FAQ — most "wrong answer" reports turn out to be a unit or input misunderstanding, and the page usually explains it.
  • For privacy questions, see our Privacy Policy — the short version is that we collect no personal data.
  • We can't provide personal financial, medical, or legal advice — see our Disclaimer.