Chain to Millimeter
Chain (ch)
Millimeter (mm)
How it is calculated
Each unit is defined via the base unit (meter (m)). The value is first converted to the base unit, then to the selected unit.
1 ch = 20.1168 m
1 mm = 0.001 m
1 ch × 20.1168 = 20.1168 m
20.1168 m ÷ 0.001 = 20116.8 mm