Weight Unit Definitions
Our Weight Converter helps you quickly convert between kilograms, pounds, ounces, grams, and tons. Whether you're cooking, shipping packages, or managing fitness goals, this tool provides precise conversions for recipes, international packages, and health tracking.
Kilogram (kg)
The kilogram is the base unit of mass in the International System of Units (SI). It is defined by the mass of the international prototype kilogram, a platinum-iridium alloy cylinder kept in France. The kilogram is used worldwide as the standard for mass measurements.
Gram (g)
A gram is one-thousandth of a kilogram (0.001 kg). It is commonly used for measuring small masses such as food items, ingredients, and small objects. One gram equals approximately 0.035 ounces.
Pound (lb)
A pound is a unit of mass commonly used in the United States and United Kingdom. One pound equals approximately 0.453592 kilograms or 16 ounces. The pound is widely used for measuring body weight, groceries, and everyday items.
Ounce (oz)
An ounce is a unit of mass equal to 1/16 of a pound or approximately 28.3495 grams. It is commonly used for measuring small quantities of food, precious metals, and postal packages.
Ton (Metric) (t)
A metric ton equals 1,000 kilograms. It is used for measuring large masses such as vehicles, cargo, and industrial materials. One metric ton equals approximately 2,204.62 pounds.
Stone (st)
A stone is a unit of mass equal to 14 pounds or approximately 6.35 kilograms. It is primarily used in the United Kingdom and Ireland for measuring body weight.
Grain (gr)
A grain is a very small unit of mass equal to approximately 0.0648 grams. It was originally based on the weight of a single grain of wheat. It is still used in some contexts, particularly for measuring bullets, arrows, and precious gemstones.
Carat (ct)
A carat is a unit of mass used specifically for measuring gemstones and pearls. One carat equals 200 milligrams or 0.2 grams. The word "carat" comes from the carob seed, which was historically used as a reference for weighing gemstones.
Frequently Asked Questions on Weight Conversion
Q: How to convert kilograms to pounds?
Multiply the weight in kilograms by 2.20462 to convert to pounds. Example: 10 kg = 22.0462 lbs.
Q: How many grams are in an ounce?
1 ounce equals 28.3495 grams. To convert oz to grams, multiply by 28.3495.
Q: What is the difference between ton and tonne?
A ton (short ton) is 2,000 pounds used in the US, while a tonne (metric ton) is 1,000 kilograms used internationally. 1 tonne = 2,204.62 pounds.
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Common searches: kg to lbs | pounds to kg | grams to ounces | ounces to grams | tons to kg | stone to kg.
Our free online weight converter provides instant, accurate results for kilograms to pounds, grams to ounces, and tons to kilograms and more. Perfect for cooking, shipping, and daily weight measurements.