Weight & Mass Converter
Convert between Kg, Pounds, Grams, Ounces, Stones, and Tons.
Whether you are tracking fitness progress (lbs vs kg), cooking accurately (grams vs ounces), or shipping freight (tons), accurate weight conversion is essential. While scientifically distinct (Mass vs Weight), in daily commerce on Earth, these units are used interchangeably to measure "heaviness".
Weight/Mass Conversion
Convert weight/mass conversion instantly.
Common Conversions
- 1 kg ≈ 2.2046 lbs
- 1 lb ≈ 453.6 g
- 1 ounce ≈ 28.35 g
- 1 stone = 14 lbs
- 1 metric ton = 1000 kg
- 16 ounces = 1 pound
Frequently Asked Questions
Weight vs. Mass
1. Are they the same?
Technically, Mass (kg) is how much matter exists in an object. Weight (N or lb-force) is how hard gravity pulls on it. However, since gravity is constant on Earth's surface, we treat Pounds and Kilograms as interchangeable "weight" units in everyday life.
2. The Kilogram Standard
Until 2019, the kilogram was defined by a physical metal cylinder in a vault in Paris ("Le Grand K"). Now, it is defined by the Planck constant, a fundamental constant of quantum physics, making it universal and indestructible.