Contact

Found a calculation error, a factual mistake in our content, or have a question about a specific cipher? We want to know — accuracy is the foundation of this site (see our editorial policy).

A monitored contact email is being set up. In the meantime, corrections and questions can be routed through whatever channel directed you to this site.

Before you reach out

If you're reporting a calculation discrepancy, it's very often because another calculator uses a different cipher under a similar name — see why totals differ between calculators before assuming ours is wrong. If it turns out we do have a genuine bug, we take that seriously and want to fix it.