How to convert US survey foot to Light-second

Conversion factor and calculation steps from US survey foot (ft US) to Light-second (ls).

Conversion logic

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 ft US = 0.304800609601 m

1 ls = 299792458 m

1 ft US × 0.304800609601 = 0.304800609601 m

0.304800609601 m ÷ 299792458 = 1.01670540e-9 ls