Correction & Review History
A complete, reverse-chronological record of corrections and review changes. For how to report an error and our triage process, see the Corrections Policy.
No corrections have been required since launch.
This page will list every correction as it is made — with the date, the calculator or page affected, a description of the issue, how it was resolved, and its severity. We keep this history public because transparency about our mistakes is part of earning your trust.