Weight Converter
Convert instantly between different units.
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Weight Conversion Reference Guide
Weight is measured in kilograms in most of the world and in pounds/ounces in the United States. Stones are still used informally in the UK and Ireland for body weight. Understanding these conversions is useful for cooking, travel, shipping, and fitness tracking.
Key Conversion Factors
- 1 kilogram (kg) = 2.20462 pounds (lbs)
- 1 pound (lb) = 453.592 grams = 16 ounces
- 1 stone = 14 pounds = 6.35029 kg
- 1 ounce (oz) = 28.3495 grams
- 1 metric ton = 1,000 kg = 2,204.62 lbs
Practical Conversions
- Quick kg→lbs: multiply by 2.2 (close enough for most uses)
- Quick lbs→kg: divide by 2.2
- Body weight in stones: divide pounds by 14
How many pounds is 70 kg?
70 kg × 2.20462 = 154.32 lbs. For quick mental conversion, multiply by 2.2: 70 × 2.2 = 154 lbs. Other common references: 50 kg = 110 lbs, 80 kg = 176 lbs, 100 kg = 220 lbs.
What is the difference between mass and weight?
Mass is the amount of matter in an object (measured in kg) and doesn't change with gravity. Weight is the gravitational force acting on that mass (measured in Newtons, though kg is colloquially used). On the Moon, your mass is the same but you'd weigh about 1/6 of your Earth weight. In everyday life, the terms are used interchangeably.