KG to LB

What is a kilogram?

The kilogram (kg) is the base unit of mass in the International System of Units (SI). Since 2019, it is defined by the Planck constant, making it universally reproducible. One kilogram is approximately equal to 2.20462 pounds. The kilogram is used worldwide for everyday mass measurements, from body weight to groceries.

Before the 2019 redefinition, the kilogram was the only SI unit still defined by a physical artifact — the International Prototype Kilogram, a cylinder of platinum-iridium kept in Sèvres, France. The new definition ties the kilogram to fundamental constants of nature, ensuring long-term stability.

What is a pound?

The pound (lb) is a unit of mass used primarily in the United States and a few other countries. The international avoirdupois pound is legally defined as exactly 0.45359237 kilograms, making one kilogram approximately 2.20462 pounds. The abbreviation "lb" comes from the Latin word "libra," meaning balance or scales.

Pounds are commonly used for body weight in the US, UK, and some other countries. In the UK, both kilograms and pounds are used in everyday life, though metric units are standard in commerce and science.

When to convert kg to lb

Common conversion scenarios include:

• Fitness and health. Converting body weight between metric and imperial scales.
• Shipping and logistics. International shipping often requires weight in both units.
• Cooking. Recipes from different regions may use different weight units.
• Sports. Weight class limits in combat sports are sometimes given in pounds.

How to convert kg to lb

This tool converts instantly in your browser.

1. Enter a value. Type a weight in kilograms in the input box.
2. See the result. The pound equivalent appears immediately.
3. Copy if needed. Click "Copy result" to copy the value.

The formula is lb = kg × 2.20462. For example, 10 kg = 10 × 2.20462 = 22.0462 lb. All math is local and private.

Common kg to lb values

Frequently used weight conversions:

Kilograms	Pounds	Description
1 kg	2.2 lb	Small item
5 kg	11.0 lb	Bag of rice
10 kg	22.0 lb	Box of books
50 kg	110.2 lb	Light person
70 kg	154.3 lb	Average adult
100 kg	220.5 lb	Heavy person