How many kilograms are in 1 pound?

One pound equals exactly 0.45359237 kilograms. For quick mental math, divide pounds by 2.2 for a close approximation.

How do I convert pounds to kilograms?

Multiply the number of pounds by 0.45359237, or simply divide by 2.2046 for the same result. For example, 150 lbs ÷ 2.2046 ≈ 68.04 kg.

What is the formula for pounds to kilograms?

The formula is: kilograms = pounds × 0.45359237. This exact factor was established by the International Yard and Pound Agreement of 1959 and applies worldwide.

Pounds to Kilograms (lbs to kg) Converter

1 lbs = 0.4536 kg

1 Pound equals 0.4536 Kilograms (1 lbs = 0.4536 kg). Convert Pounds to Kilograms with formula, table, and examples.

One pound equals exactly 0.45359237 kilograms. Converting pounds to kilograms is essential for international travelers, online shoppers comparing product weights, athletes training with metric equipment, and anyone working with scientific or medical data that requires metric units.

How to Convert Pounds to Kilograms

kg = lbs × 0.45359237

Multiply the value in Pounds by 0.45359237

Take your value in Pounds
Multiply by 0.45359237
Read the result in Kilograms

Common Pounds to Kilograms Conversions

Pounds (lbs)	Kilograms (kg)	Status
1 lbs	0.4536 kg
2 lbs	0.9072 kg
3 lbs	1.3608 kg
5 lbs	2.268 kg
10 lbs	4.5359 kg
15 lbs	6.8039 kg
20 lbs	9.0718 kg
25 lbs	11.3398 kg
30 lbs	13.6078 kg
40 lbs	18.1437 kg
50 lbs	22.6796 kg
60 lbs	27.2155 kg
70 lbs	31.7515 kg
80 lbs	36.2874 kg
90 lbs	40.8233 kg
100 lbs	45.3592 kg
120 lbs	54.4311 kg
150 lbs	68.0389 kg
180 lbs	81.6466 kg
200 lbs	90.7185 kg

Good to Know About Pounds to Kilograms Conversion

Americans rarely encounter kilograms in daily life, but the metric system is required in science, medicine, and military contexts. Many American food products already list metric equivalents on their labels.

Pounds to Kilograms: What You Need to Know

Medical professionals worldwide use kilograms for drug dosing calculations, so knowing your weight in kilograms can be important when visiting a doctor abroad. International shipping quotes often list weight limits in kilograms. Recipes from European cookbooks give ingredient weights in grams and kilograms, requiring conversion from the pounds listed in American recipes.

What is a Pound? lbs

An imperial and US customary unit of mass equal to approximately 453.6 grams or 16 ounces. Widely used in the US and UK for body weight and commerce.

Imperial Us-customary body weight (US/UK) food (US) commerce

Learn more about Pound →

What is a Kilogram? kg

The base unit of mass in the International System of Units (SI). Equal to 1000 grams. Used worldwide for everyday weighing and commerce.

Metric everyday weighing commerce medicine

Learn more about Kilogram →

Going the other way? Use our Kilograms to Pounds converter.

Pounds to Kilograms FAQ

One pound equals exactly 0.45359237 kilograms. For quick mental math, divide pounds by 2.2 for a close approximation.
Multiply the number of pounds by 0.45359237, or simply divide by 2.2046 for the same result. For example, 150 lbs ÷ 2.2046 ≈ 68.04 kg.
The formula is: kilograms = pounds × 0.45359237. This exact factor was established by the International Yard and Pound Agreement of 1959 and applies worldwide.

Non-Frequently Asked Questions About Pounds to Kilograms

Questions nobody should ask - but someone did.

It comes from the Latin 'libra pondo' meaning 'a pound by weight.' The Romans gave us 'lb' and the English gave us 'pound.' Nobody gave us a logical abbreviation system. Welcome to imperial measurement.
You lost about 4.536 kilograms. In America this sounds impressive. In Europe it sounds modest. Same achievement, different emotional impact. Unit conversion is also psychological conversion.