Weight Converter

About Weight Conversion

Weight is a measure of the force of gravity acting on an object. The SI unit of weight is actually the newton (N), but in everyday use, we often use mass units (like kilograms) to describe weight. Different regions of the world use different units to measure weight.

Weight Conversion Formulas

Our weight converter uses these precise formulas to ensure accurate conversions:

Metric System Conversions

1 kilogram (kg) = 1,000 grams (g)
1 gram (g) = 1,000 milligrams (mg)
1 metric ton (t) = 1,000 kilograms (kg)

Imperial System Conversions

1 pound (lb) = 16 ounces (oz)
1 US ton (short ton) = 2,000 pounds (lb)
1 UK ton (long ton) = 2,240 pounds (lb)
1 stone (st) = 14 pounds (lb)

Metric to Imperial Conversions

1 kilogram (kg) = 2.20462 pounds (lb)
1 gram (g) = 0.035274 ounces (oz)
1 metric ton (t) = 2204.62 pounds (lb)
1 kilogram (kg) = 0.157473 stone (st)

Imperial to Metric Conversions

1 pound (lb) = 0.453592 kilograms (kg)
1 pound (lb) = 453.592 grams (g)
1 ounce (oz) = 28.3495 grams (g)
1 stone (st) = 6.35029 kilograms (kg)
1 US ton (short ton) = 907.185 kilograms (kg)
1 UK ton (long ton) = 1016.05 kilograms (kg)

Common Weight Conversions

• 1 kilogram = 2.20462 pounds = 35.274 ounces = 1000 grams
• 1 pound = 0.453592 kilograms = 16 ounces = 453.592 grams
• 1 stone = 14 pounds = 6.35029 kilograms = 224 ounces
• 1 metric ton = 1000 kilograms = 2204.62 pounds = 1.10231 US tons
• 1 ounce = 28.3495 grams = 0.0625 pounds = 0.028 kilograms

Weight Conversion Applications

Weight unit conversions are useful in many areas:

• Cooking and baking with international recipes
• Medical and healthcare dosage calculations
• Fitness and body weight tracking
• Shipping and logistics
• Commercial trade and product packaging
• Manufacturing and industrial processes
• Scientific research and laboratory work

Understanding Weight Units

Metric System Units

Kilogram (kg) - The base unit of mass in the International System of Units (SI). A kilogram is exactly defined by the Planck constant, which relates a photon's energy to its frequency.

Gram (g) - Equal to 0.001 kilograms, commonly used for measuring smaller masses like food ingredients.

Milligram (mg) - Equal to 0.001 grams, commonly used in medicine for dosing medications and in scientific contexts.

Metric Ton (t) - Equal to 1,000 kilograms, used for measuring large masses such as vehicles or industrial quantities.

Imperial and US Customary Units

Pound (lb) - The most common unit of weight in the United States. One pound is equal to 16 ounces.

Ounce (oz) - Equal to 1/16 of a pound, commonly used for smaller weights in cooking and retail.

Stone (st) - Primarily used in the United Kingdom and Ireland for measuring body weight. One stone equals 14 pounds.

US Ton (Short Ton) - Equal to 2,000 pounds, used primarily in the United States for larger masses.

UK Ton (Long Ton) - Equal to 2,240 pounds, traditionally used in the United Kingdom and some Commonwealth countries.

Other Weight Units

Carat (ct) - Equal to 0.2 grams, used for measuring gemstones and precious metals.

Grain (gr) - A very small unit of weight equal to about 64.8 milligrams, often used in weaponry for ammunition.

Common Weight Conversion Questions

How many kilograms are in a pound?

There are approximately 0.453592 kilograms in 1 pound. To convert pounds to kilograms, multiply the pound value by 0.453592. For example, 10 pounds = 10 × 0.453592 = 4.53592 kilograms.

How many pounds are in a kilogram?

There are approximately 2.20462 pounds in 1 kilogram. To convert kilograms to pounds, multiply the kilogram value by 2.20462. For example, 5 kilograms = 5 × 2.20462 = 11.0231 pounds.

How many grams are in an ounce?

There are approximately 28.3495 grams in 1 ounce. To convert ounces to grams, multiply the ounce value by 28.3495. For example, 2 ounces = 2 × 28.3495 = 56.699 grams.

Our weight converter provides accurate conversions between all these units, making it easy to translate between different weight measurements for cooking, shipping, fitness tracking, or any other personal or professional need.