Weight Converter

Enter a value in any unit field, and all other units will automatically update with the converted values. The conversion happens in real-time as you type.

• Milligram (mg): 1/1000 of a gram (0.001 g)
• Gram (g): Base unit of mass in metric system
• Kilogram (kg): 1,000 grams
• Metric Ton (t): 1,000 kilograms (also called tonne)

• Ounce (oz): 1/16 of a pound (avoirdupois)
• Pound (lb): 16 ounces
• Stone (st): 14 pounds (primarily used in UK)
• US Ton: 2,000 pounds (short ton)
• UK Ton: 2,240 pounds (long ton, imperial ton)

• 1 kilogram = 2.20462 pounds
• 1 pound = 0.453592 kilograms
• 1 ounce = 28.3495 grams
• 1 gram = 0.035274 ounces
• 1 stone = 6.35029 kilograms
• 1 metric ton = 1.10231 US tons

Technically, mass is the amount of matter in an object (measured in kg or g), while weight is the force of gravity on that mass (measured in Newtons). In everyday usage, these terms are used interchangeably. This converter handles mass units.

For very large or very small numbers, scientific notation is used:

• 1.5e+6 = 1.5 × 10^6 = 1,500,000
• 2.3e-4 = 2.3 × 10^-4 = 0.00023

The stone is a unit of weight primarily used in the UK and Ireland for measuring human body weight. One stone equals 14 pounds or approximately 6.35 kilograms. For example, someone might weigh "11 stone 5" (11 stones and 5 pounds).