Humidity ratio converter

8 units, SI unit kg/kg. Every conversion runs through the SI base value, so round-trips are exact.

sig figs

1 gr/lb = 0.143 g/kg

1 gr/lb in every humidity ratio unit

part per billion by volume (moisture)	230,000 ppbv
microgram per kilogram of dry air	143,000 μg/kg
part per million by volume (moisture)	230 ppmv
milligram per kilogram of dry air	143 mg/kg
grain per pound of dry air	1 gr/lb
gram per kilogram	0.143 g/kg
kilogram per kilogram	0.000143 kg/kg
pound per pound of dry air	0.000143 lb/lb

One gram per kilogram in every unit

part per billion by volume (moisture) (ppbv)	1,607,859.2 ppbv
microgram per kilogram of dry air (μg/kg)	1,000,000 μg/kg
part per million by volume (moisture) (ppmv)	1,607.8592 ppmv
milligram per kilogram of dry air (mg/kg)	1,000 mg/kg
grain per pound of dry air (gr/lb)	7 gr/lb
gram per kilogram (g/kg)	1 g/kg
kilogram per kilogram (kg/kg)	0.001 kg/kg
pound per pound of dry air (lb/lb)	0.001 lb/lb

Solvers that use humidity ratio