Weight Converter

Convert between various weight units including kilograms, grams, pounds, ounces, tons and more

Common Weight Conversions

Kilograms to Pounds

1 kilogram = 2.20462 pounds

To convert kilograms to pounds, multiply the kilogram value by 2.20462.

Example: 5 kilograms = 5 × 2.20462 = 11.0231 pounds

Pounds to Kilograms

1 pound = 0.453592 kilograms

To convert pounds to kilograms, multiply the pound value by 0.453592.

Example: 10 pounds = 10 × 0.453592 = 4.53592 kilograms

Grams to Ounces

1 gram = 0.035274 ounces

To convert grams to ounces, multiply the gram value by 0.035274.

Example: 100 grams = 100 × 0.035274 = 3.5274 ounces

Weight Conversion Reference Table

Unit Kilograms (kg) Grams (g) Pounds (lb) Ounces (oz) Stones (st) Metric Tons (t)
1 Kilogram 1 1,000 2.20462 35.274 0.157473 0.001
1 Gram 0.001 1 0.00220462 0.035274 0.000157473 0.000001
1 Pound 0.453592 453.592 1 16 0.0714286 0.000453592
1 Ounce 0.0283495 28.3495 0.0625 1 0.00446429 0.0000283495
1 Stone 6.35029 6,350.29 14 224 1 0.00635029
1 Metric Ton 1,000 1,000,000 2,204.62 35,274 157.473 1
1 US Ton 907.185 907,185 2,000 32,000 142.857 0.907185
1 Imperial Ton 1,016.05 1,016,050 2,240 35,840 160 1.01605

About Weight Units

The metric system uses units based on powers of 10, making conversions straightforward:

  • Metric Ton (t): 1,000 kilograms, used for heavy objects and industrial measurements.
  • Kilogram (kg): The base unit of mass in the International System of Units (SI).
  • Gram (g): 1/1,000 of a kilogram, used for lighter objects and food measurements.
  • Milligram (mg): 1/1,000 of a gram, commonly used in medicine and nutrition.
  • Microgram (μg): 1/1,000,000 of a gram, used in scientific and medical contexts.

The imperial and US customary systems use:

  • Imperial Ton (long ton): 2,240 pounds, used primarily in the United Kingdom and Commonwealth countries.
  • US Ton (short ton): 2,000 pounds, commonly used in the United States.
  • Stone (st): 14 pounds, mainly used in the UK and Ireland for body weight.
  • Pound (lb): 16 ounces, the most common unit of weight in the US system.
  • Ounce (oz): 1/16 of a pound, used for smaller measurements.

Specialty weight units used in specific contexts:

  • Carat (ct): 0.2 grams (200 milligrams), used for measuring gemstones and precious metals.
  • Grain: Approximately 64.8 milligrams, used in firearms for bullets and powder, and in some pharmaceuticals.
  • Troy Ounce: About 31.1 grams, used for precious metals like gold and silver.
  • Pennyweight (dwt): 1.555 grams, historically used by jewelers.

Frequently Asked Questions

How many grams are in a kilogram?

There are 1,000 grams in a kilogram. The prefix "kilo" means 1,000 in the metric system.

What is the difference between a metric ton and a US ton?

A metric ton (also called a tonne) is 1,000 kilograms or approximately 2,204.6 pounds. A US ton (also called a short ton) is 2,000 pounds or approximately 907.2 kilograms. This means a metric ton is about 10% heavier than a US ton.

How many ounces are in a pound?

There are 16 ounces in a pound. This is a standard conversion in the imperial and US customary measurement systems.

What is a stone and where is it used?

A stone is a unit of weight equal to 14 pounds (approximately 6.35 kilograms). It is primarily used in the United Kingdom and Ireland for measuring human body weight. For example, someone might say they weigh "11 stone 4 pounds" (158 pounds or about 71.7 kilograms).

Which is heavier: an ounce or a gram?

An ounce is heavier than a gram. One ounce equals approximately 28.35 grams, making it more than 28 times heavier than a single gram.