Real maths. Strange perspective.

Questions you didn't know you wanted answered.

Twelve calculators that take ordinary facts about your life, do the real arithmetic, and hand back a number you will want to tell someone about.

Real maths • Your answers stay on your device

Start here

More questions

Browse by category

The numbers are real. The perspective is weird.

Real arithmetic

Nothing is invented to make a punchline land. Every result is worked out from your answers and a small set of published reference values.

Sources you can check

Every external constant is listed with its publisher, its derivation and its limitations. If we estimated something, we say so.

Your answers stay in your browser

No accounts, no tracking, no saved answers. Everything is calculated on your own device, and nothing is published unless you press a share button.