Weight/Mass Converter

Convert weight and mass between metric and imperial units. Perfect for cooking, shipping, fitness, and scientific calculations.

From
Enter weight value
To
Converted value
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About Weight/Mass Conversion

Mass is a measure of the amount of matter in an object. Weight is the force exerted on that mass by gravity. In everyday usage, these terms are often used interchangeably.

Common Weight/Mass Units

Metric System

  • Milligram (mg) - One thousandth of a gram (0.001 g)
  • Gram (g) - Base unit for small masses
  • Kilogram (kg) - The SI base unit of mass (1,000 g)
  • Metric Ton (t) - One thousand kilograms (1,000 kg)

Imperial/US System

  • Ounce (oz) - 1/16 of a pound, equals 28.35 grams
  • Pound (lb) - 16 ounces, equals 0.4536 kg
  • Stone (st) - 14 pounds, equals 6.35 kg (mainly UK)
  • US Ton - 2,000 pounds, equals 907.18 kg
  • Imperial Ton - 2,240 pounds, equals 1,016 kg

Quick Reference

  • 1 kilogram = 2.205 pounds
  • 1 pound = 0.4536 kilograms
  • 1 ounce = 28.35 grams
  • 1 metric ton = 1.102 US tons
  • 1 stone = 14 pounds

Common Uses

  • Cooking & Recipes - Grams, ounces, pounds
  • Body Weight - Kilograms or pounds
  • Shipping & Cargo - Kilograms, pounds, tons
  • Precious Metals - Grams, ounces (troy ounces)
  • Science - Grams, kilograms