The crith conversion selector on this page selects the mass/weight measurement unit to convert to starting from criths. To make a conversion starting from a unit of mass other than crith, simply click on the "Reset" button.
The crith is a unit of mass used for gases that corresponds to the mass of one liter of hydrogen measured at standard pressure and temperature.
The mass of one liter of hydrogen at 0 °C and 1 atm was found to be 0.0899349 × 10-3 kilograms (1 crith = 0.0899349 × 10-3 kg), the base unit of mass in the International System of Units (SI). The crith is also equal to 0.0899349 grams (g), or 89.9349 milligrams (mg) or 89,934.9 micrograms (μg), which are SI units of mass.
The crith is used in the physics and chemistry of gases.