Didot point to Light-day
Didot point (dd)
Light-day (ld)
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 dd = 0.000376065 m
1 ld = 2.59020684e13 m
1 dd × 0.000376065 = 0.000376065 m
0.000376065 m ÷ 2.59020684e13 = 1.45187247e-17 ld