A wrong formula, a missing calculator, or a question about a result: this is where it goes.
Three things reach us fastest through the form below: a formula that looks wrong, a calculator you wish existed, or a step in a guide that does not match what the calculator itself returns.
If you are reporting a possible error, include the page you were on and the exact numbers you entered. "The square root calculator is wrong" is hard to act on. "Entering 72 gives 6 times the square root of 2, but I expected a different value" gives us something to test against. We check every report against the underlying math before changing a page.
Messages are read by the person who runs the site day to day, not a general inbox. Corrections that check out get fixed on the page directly, and the site's editorial standards page explains how that process works. General questions about the site's ownership or the Encore Editorial network can also be routed through go-encore.com.