keepcalculator

Drawer 01

Unit Conversions calculators

Specific unit pairs and quantities, each with the exact factor written out: speed, length, area, volume and mass. For any other pair, the unit converter covers ten quantities.

Cards in this drawer
12
Typical formula
1 ft = 0.3048 m
Photo collage: a folding wooden carpenter's rule, a steel tape measure, a glass measuring jug and brass balance weights.

Front of the drawer

Every card in Unit Conversions

Every calculator uses a standard formula and shows it. How the calculators work.