Weight Converter
Switch mass units for fitness, food, and travel.
Weight Converter
Convert between any two weight & mass units instantly.
Gram (g)
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What This Calculator Does
The Weight Converter converts between milligrams, grams, kilograms, ounces, pounds, stone, and metric tons. Fitness tracking, cooking, and international shipping all rely on these conversions.
How It Works
Every unit normalizes to kilograms using exact factors. A pound is 0.453592 kg and an ounce is 0.0283495 kg, so conversions are precise in either direction.
Example
Convert 150 pounds to kilograms: 150 x 0.453592 = 68.04 kg. Convert 1 stone to pounds: 14 lbs.
Formula
Result = Input (in kg) × Target factor1 lb = 0.453592 kg, 1 oz = 0.0283495 kg.
Reading the Results
Converted Mass
The input mass expressed in the target unit, normalized through kilograms for precise results.
Frequently Asked Questions
How many kilograms are in a pound?
One pound equals 0.453592 kilograms, so dividing pounds by 2.20462 converts to kilograms.
What is a stone?
A stone is a British mass unit equal to 14 pounds, or about 6.35 kg, still common for body weight in the UK.
Is mass the same as weight?
Technically no, but for everyday use mass in kilograms and weight in pounds are treated interchangeably on Earth.