Mass Converter

This free online Mass Converter allows you to instantly convert between different units of mass and weight. The standard SI unit of mass is the Kilogram (kg).

Supported Units

• Kilogram (kg): The SI base unit of mass.
• Gram (g): 1/1000 of a kilogram.
• Milligram (mg): 1/1000 of a gram.
• Pound (lb): A unit of mass used in the imperial and US customary systems. 1 lb ≈ 0.45359237 kg.
• Ounce (oz): 1/16 of a pound.
• Stone (st): An imperial unit of mass equal to 14 pounds.
• Metric Ton (t): 1,000 kilograms.
• Long Ton: Imperial ton, equal to 2,240 pounds.
• Short Ton: US ton, equal to 2,000 pounds.