A recipe in ounces, a suitcase limit in kilograms and a scale in pounds: weight conversions come up in the kitchen, at the airport and in the post office.
The exact factors
- 1 pound = 453.59237 grams
- 1 ounce = 28.349523125 grams (one sixteenth of a pound)
- 1 kilogram = 1,000 grams, and 1 tonne = 1,000 kilograms
These are the international avoirdupois definitions, which are exact.
Examples
In the Weight Converter:
- 70 kg is 154.32 lb.
- 8 oz is 226.8 g, about a quarter of a kilogram.
A useful rule: a kilogram is about 2.2 pounds, and an ounce is about 28 grams.
Using the converter
- Enter the value.
- Choose from and to units: mg, g, kg, tonne, oz or lb.
- Read the result.
Watch the ounces
The ounce here is a weight. A fluid ounce measures volume and is a different unit, which this converter does not cover. For liquids, see the volume guide. Also, some contexts use other ounces, such as the troy ounce for precious metals, which is heavier than the ordinary one.
Frequently asked questions
Is a stone supported?
No. The converter handles milligrams, grams, kilograms, tonnes, ounces and pounds. A stone is 14 pounds.
Why use grams in recipes?
Weight is more precise than volume for dry ingredients, since a cup of flour can vary by 20 percent depending on how it is packed.