Difference Between Pound and Kilogram

Pounds and kilograms are both units for measuring mass. Pound refers to an imperial system of measuring weight or mass. Kilogram, on the other hand, was adopted under the SI or International System of Units in 1959.  

However, there are incremental differences when calculating mass in kilograms as opposed to the same calculation in pounds. How many kg in one pound is a common query for many individuals trying to compound the mass of an object from kilogram to pounds, or vice versa.


One Pound is Equal to How Many Kg

One pound is equal to just under half a kilogram. To be exact, 

1 pound = 0.453 kg

By this same equation, one can derive how many pounds in a kilogram.

1 kg = 2.204 pounds

Before proceeding to learn the difference between pound and kg, let us understand a bit more about kilogram and pound.


What is Kilogram?

Under the SI system of measurement, a kilogram is considered equal to the mass of one litre of water. Stored in a vault at the International Bureau of Weights and Measures, France, IPK is a standard Iridium-Platinum cylindrical figure that is exactly equal to 1 kg. To understand the relation between pound and kg, you should also learn more about a pound.


What is Pound?

A pound is one of the units of measuring mass under the Imperial system. Other scales include stone and ounce. Abbreviated as ‘lb’ due to the pound’s association with the Roman Libra, this unit has several varieties in different countries. 

The exact answer to how many kg in one pound is 0.45359237 kg. Nonetheless, remembering this figure is difficult, which is why most calculations consider 1 pound = 0.450 kg.


Multiple Choice Question – 1

Raj Buys 10 Pounds of Potato. How Many kg of Potato Did he Buy?

  1. 4.23 kg

  2. 6.53 kg

  3. 4.53 kg

  4. 3.73 kg

Ans. (c) 4.53 kg

Now, let us proceed to understand the various differences between lbs and kgs.

Differences Between Kg and Pound



A kilogram is a metric unit for calculating mass.

A pound is an imperial unit for calculating mass. 

Abbreviation for kilogram is kg.

Pound’s abbreviations are ‘lb’ and ‘lbm’.

Mass is expressed in kilogram throughout the world.

Pound is primarily used in the USA and UK.

One kilogram is equal to 2.204 pounds.

One pound is equal to 0.453 kg.

A kilogram is a unit solely for the measurement of mass.

Pound can express both force and mass. 

Kilogram comes from a Greek term, where Kilo means thousand.

Pound is derived from a Germanic word.


Pounds to Kilogram Formula

Being able to answer how many kg in one pound is not sufficient. You should also be able to convert pounds into kilograms quickly, as well. To do so, simply multiply the mass in kg with 0.453. For example, 3 pounds will be equal to 3 x 0.453 kg. 


Kilogram to Pounds Formula

In a similar fashion, when converting mass from kilogram to pounds, multiply the weight in kg with 2.204.    

Now that you know the difference between kg and pound, here is a quick exercise to solve.


Exercise – 1

Q. Shruti orders 45 pounds of cement for the construction of her home. However, she receives only 13 kg of cement. How many pounds of cement does she need to complete her order?



Method 1

Start by converting 45 pounds into kg.

Thus, cement ordered (in kg) = 45 x 0.453 = 20.38kg    

Shruti received 13 kg of cement from her order. Thus, cement still to be delivered is (20.41 - 13) kg. Therefore, she is yet to receive 7.38 kg of cement. 

Pounds of cement yet to be delivered = 7.38 x 2.20 = 16.236 pounds.


Method 2

This is the faster procedure, involving just one conversion.

Start by converting 13 kg into pounds.

Cement delivered = 13 x 2.204 = 28.65 pounds.

Cement to be delivered = 45-28.65 = 16.35 pounds 

The calculation becomes extremely simple when one can remember the lbs to kilos formula.

One pound vs kg calculations can become easier with help from Vedantu’s wide array of tricks and tips. We even offer a Vedantu app for students to ensure enhanced connectivity. Through this application, students can attend classes and learn more about particular chapters, topics and subjects.

FAQ (Frequently Asked Questions)

1. How Many lbs in One kg?

Ans. One kg is equal to 2.204 pounds. Consequently, one can say that each kg weighs 2.2 times that of a pound.

2. Which of the Units Amongst Kilogram and Pound is the Metric Unit for Measuring Mass?

Ans. Kilogram or kilo is the Metric Unit for the Measurement of Mass or Weight.

3. Where is Pound the Most Common Unit for Measuring Mass?

Ans. Pound is common in the United States of America and the United Kingdom as a unit for measurement of mass.