Difference Between Pound and Kilogram (With Table)

Pounds and kilograms are two of the numerous units utilized for the estimation of mass. Actual amounts need units for their estimation. We need standard clear-cut units for the estimation of actual amounts. Albeit both pound and kilogram are units of mass yet there are some significant contrasts between these two units of mass. 

Pound vs Kilogram

The main difference between Pound and Kilogram is that a pound can either be a force measurement or a unit of weight or can be referred to as the currency in few countries while a kilogram is absolutely a unit of mass estimation and can not be used for any other thing.

A pound is one of the units of estimating mass under the Imperial framework. Different scales incorporate stone and ounce. Abridged as ‘lb’ because of the pound’s relationship with the Roman Libra, this unit has a few assortments in various nations. 

Under the SI arrangement of estimation, a kilogram is viewed as equivalent to the mass of one liter of water. A kilogram is 2.2 occasions heavier than a pound. One kilogram is the standard unit of estimation of weight. A kilogram weighs 2.21 pounds (lb) or 9.81 Newtons (N).

Comparison Table Between Pound and Kilogram

Parameters of ComparisonPoundKilogram
UnitA pound is an imperial unit for computing mass.A kilogram is a metric unit for computing mass. 
AbbreviationA pound is condensed as lb, LBM. A kilogram is condensed as a kilo or kg. 
Equals toA pound is equivalent to 0.4535 kilograms. One kilogram is equivalent to 2.2046 pounds. 
DerivedA pound is gotten from a German word. A kilogram is gotten from a Greek word. 
UtilizedA pound is for the most part utilized in nations like the U.S. also, UK. Kilo is broadly utilized as the estimation unit in many nations.

What is Pound?

A pound is a unit of estimation that is well known in the royal framework, utilized most generally by the United States. To separate it from the money of Britain, otherwise called Pound, the unit of estimation is regularly shortened as ‘lb’ or ‘lbs’.

The pound has been utilized to allude to numerous units ever. Not these units were indistinguishable. Every one of these was simply extensively like one another. The originally known utilization of the unit of the pound is viewed as an exceptionally old unit called the Roman libra. This was utilized by the old Romans. It was around equivalent to 328.9 grams. This term is likewise liable for the shortened form of a pound (lb) that we use today.

Notwithstanding these units, the pound has gone through a few different varieties. Some of them incorporate the pinnacle pound, the dealer pound, and the London pound. This load of units is not being used today. A specific variety of pounds called the troy pound is utilized to gauge the mass of valuable metals. This unit is usually utilized in the exchange, however, it is simply alluded to as far as ounces. If during an exchange the sort of ounce isn’t indicated, the troy framework is expected.

What is Kilogram?

The kilogram was first called ‘the grave’ in quite a while. The grave was characterized as a mass of 1 liter of water. This definition was utilized around the year 1793. In 1795, the word ‘kilogram’ came to be in everyday use. Around this time, it was characterized as multiple times the mass of 1 cm3 of water at the liquefying point. In 1799, an early model of the kilogram was fabricated called ‘Kilogram des Archives’. In any case, this model neglected to get boundless acknowledgment. 

Then, at that point, at the Meter Convention of 1875, the kilogram’s other model was fabricated called the ‘Worldwide Prototype of Kilogram’ (IPK). This model had a mass equivalent to the mass of 1 dm3 of water at water’s greatest thickness. Water’s greatest thickness happens at 4oC. In 2019, the General Conference on Weights and Measures (CGPM) characterized the kilogram as far as material science’s essential constants. The kilogram is presently characterized as far as the speed of light ‘c’, the particular nuclear progress recurrence, and Planck’s steady ‘h’. This is finished with the assistance of the unit Js (Joules-second). Js can be communicated as Kg⋅m2⋅s-1. Here, the meter is characterized as far as the speed of light ‘c’, and the second is characterized as far as the particular nuclear progress recurrence.

Main Differences Between Pound and Kilogram

1. Pound is an imperial unit of mass or weight measure while kilogram is a metric unit of estimation. 

2. A pound is roughly equivalent to 0.4535 kilograms whereas a kilogram is roughly equivalent to 2.2046 pounds. 

3. Pound can either be a unit of weight or power estimation while kilogram is simply a unit of mass estimation.

4. Pound is derived from a German word while kilogram is a Greek word.

5. Pound is mainly used in UK and US whereas kilogram is used all over the globe. 


One kilogram of mass is equivalent to 2.2 lbs. This is valid when estimating mass here on Earth. Be that as it may, in different planets where the gravity is either more fragile or more grounded than our own, then, at that point, probably the transformation consistent will be not the same as 2.2. In addition, some are saying that a kilogram is a proportion of weight because a kilo is acknowledged to be the mass of 1 L. of water. On the contrary side, one pound is equivalent to about 0.454 kg. or on the other hand 454 grams. 

All things considered, the proper reception of the International System of Units (SI) back in 1959 made ready to the course shift of accepting kilograms as the most broadly utilized unit of measure for mass. Indeed, the majority of the SI units today (the advanced decimal measuring standard of units) are the most generally utilized in science, business, and day-to-day existence. It is important, notwithstanding, that a few nations like the U.S. also, U.K. are accepting the pound as their standard unit of estimating mass.


  1. https://journals.lww.com/jbjsjournal/Fulltext/1996/02000/Early_Effectiveness_of_Shoulder_Arthroplasty_for.13.aspx
  2. https://ascelibrary.org/doi/pdf/10.1061/ISEND6.0000167

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