Get App

Pounds to Kilograms Converter

lbs
Kilograms
68.04 kg
Average adult weight range

Formula

kg = lbs ÷ 2.20462

To convert pounds to kilograms, divide the pound value by 2.20462. One kilogram equals approximately 2.205 pounds. The kilogram is the base unit of mass in the metric system.

How to use

  1. Enter the Weight in Pounds.
  2. Read the equivalent weight in kilograms below.
  3. Adjust the value to convert any other weight.

Example

Convert 150 lbs: 150 ÷ 2.20462 = 68.04 kg. So 150 pounds is about 68 kilograms.

Frequently Asked Questions

How many kg is 150 lbs?
150 lbs equals approximately 68.04 kg.
How many kg is 200 lbs?
200 lbs equals approximately 90.72 kg.
Is a kilogram heavier than a pound?
Yes, 1 kilogram equals about 2.205 pounds, so a kilogram is roughly 2.2 times heavier than a pound.
Why does the US use pounds?
The US uses the imperial system inherited from the British Empire. While most countries adopted the metric system, the US retained pounds for everyday weight measurements.
How do I convert pounds and ounces to kilograms?
First turn the ounces into a fraction of a pound by dividing by 16, then add that to the pounds and divide the total by 2.20462. For example, 8 lbs 4 oz is 8.25 lbs, which equals about 3.74 kg. This is commonly needed to record a baby's birth weight in metric units.
Why do gyms and barbell plates list weights in both pounds and kilograms?
Standard barbell plates come in both systems, with common pound plates at 45, 35, 25, and 10 lbs and kilogram plates at 20, 15, 10, and 5 kg. Competition lifting under the IWF and IPF uses kilograms, so serious lifters often train in kg, while most US commercial gyms default to pounds. A 45 lb plate is about 20.4 kg, close to but not the same as a 20 kg plate, so don't assume they match.

Pounds to kilograms, briefly

To convert pounds to kilograms you divide by 2.20462 (or, equivalently, multiply by 0.453592). One pound is defined as exactly 0.45359237 kilograms — the relationship is fixed and legal, set by international agreement in 1959, so it never changes with location or temperature.

A fast mental estimate is to halve the pounds and shave off about 10%: 150 lb → 75 − 7.5 ≈ 68 kg, against the exact 68.0 kg. Good enough to picture a weight, but use the full factor for anything official.

Where this conversion comes up

US body weights, gym plates, and grocery weights are all in pounds, while medical charts, scientific work, and most of the world record mass in kilograms — so anyone moving between those contexts converts constantly. The classic case is luggage: a 50 lb US bag limit is 22.7 kg, just under the 23 kg international cap.

Strength athletes also convert often, because barbell plates and competition standards mix the two systems. The arithmetic is identical regardless of size, since it is one fixed divisor.

Common conversions

100 lbs120 lbs130 lbs140 lbs150 lbs160 lbs170 lbs180 lbs190 lbs200 lbs220 lbs250 lbs

Related Calculators

Kg To Lbs
esc