Corrections Policy
Last reviewed: July 21, 2026
Report an issue
Send the page URL, input values, expected result, observed result, and supporting source through our contact page.
Verification
We reproduce reported issues, compare the implementation with its cited formula, and check whether source guidance has changed.
Publishing corrections
Material formula, interpretation, or safety changes receive an updated review date and calculation defects receive a regression test.
Independence
Commercial relationships never determine whether a correction is accepted and never change calculator results.