As a rule of thumb, one pound is equal to 0.454 kilograms. Based on that, you can convert pounds to kilograms by multiplying the number of pounds by 0.454 or dividing it by 2.205.
But if you don’t feel like calculating and would rather just get the figures from a chart, you’ve come to the right place.
We at PowerSportsGuide have compiled the most common conversion numbers into one pound-to-kg conversion chart!
How Many Kg is One Pound?
Despite that almost every country in the world uses kilograms to measure weight, the United States still sticks with pounds. Therefore, many people want to know how to convert weight figures in pounds to kilograms.
Before we drill into the details let’s talk about these units in a nutshell!
Pound
A pound is a unit measure of mass used in the British Imperial system, which was also adopted by the United States.
Although the UK and most of its former colonies have already officially adopted the metric system, some of them still use some form of pounds in everyday life. These areas include Australia, New Zealand, Canada, and many other smaller countries and islands.
This unit has been around since the 13th Century so it’s no surprise that it has had many different definitions over the years.
In 1959, the definition of the pound became standardized under an international agreement, and “The International Avoirdupois Pound” was born. This new unit was based on a standardized physical pound, which works as a prototype.
What is the exact weight of one International Avoirdupois Pound?
The International Avoirdupois Pound is defined as 0.45359237 kilograms, which is also equivalent to 16 avoirdupois ounces.
As for symbols, the standard symbol of pounds is lb, but it’s also commonly used as lbs.
Are you wondering where this symbol came from?
In a nutshell, “lb” is the abbreviation of “libra”, since the predecessor of today’s pound was the Roman libra (pound). This mass unit was around 0.3289 kilograms and as the name suggests, it was used in Roman times.
The weight of one pound expressed in other units are as follows:
- 1 pound = 16 ounce (oz)
- 1 pound = 0.45359237 kilogram (kg)
- 1 pound = 453.59237 gram (g)
- 1 pound = 453592.37 milligram (mg)
- 1 pound = 0.0004535924 ton (t) metric
- 1 pound = 2267.96185 carat (cr)
Kilogram
Unlike the pound, the kilogram is an SI (International System of Units) mass unit. The kilogram was first defined in the late 1700s as the exact mass of one liter of water at the point of freezing.
Unfortunately, this definition was not the best since precisely measuring water was complicated.
Because of this, the definition of the kilogram was re-defined in 1897 as the exact mass of a platinum-iridium cylinder. This polished metal cylinder was stored in Paris in a special, triple-locked vault.
It was labeled the “International Prototype of the Kilogram (IPK),” but was more commonly known as the “The Big K.”
For many decades, virtually every measurement of mass worldwide was linked to the mass of this cylinder.
But everything changed in 2018 when the international scientific community decided to entirely redefine the kilogram.
Why was this necessary?
One of the main reasons behind this change was the decrease in weight of the Big K. Believe it or not, this metal cylinder had lost around 50 micrograms since its production.
But despite this weight change, according to the definition, the mass of Big K was still considered to be exactly one kilogram. Based on that, everything would have to be adjusted due to the weight change of the Big K.
What’s more, stealing or damaging the Big K could have led to a lot of problems.
This is why the international scientific community decided to detach the kilogram from the mass of this international prototype unit.
Instead, the latest definition of one kilogram is as follows:
“The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.”
How do You Convert Pound to Kg?
You can convert pounds to kilograms by multiplying the number of pounds by 0.45359237, or divide them by 2.20462262.
Example: converting 18 lbs to kg:
18 lbs = 18 × 0.45359237 = 8.16466266 kg
Or by dividing:
18 lbs = 18 / 2.20462262 = 8.16466266 kg
Pound to Kg Conversation Formula
Based on the above, the “Pound to Kg Conversation Formula” is as follows:
- Kilograms = Pounds x 0.45359237 (or)
- Kilograms = Pounds / 2.20462262
Pound to Kg Conversion Chart
For your convenience, we’ve compiled some of the most common conversion numbers into this pound to kg chart:
| Pounds (lb) | Kilograms (kg) |
| 0.1 lb | 0.045 kg |
| 0.25 lb | 0.113 kg |
| 0.5 lb | 0.227 kg |
| 0.75 lb | 0.340 kg |
| 1 lb | 0.454 kg |
| 2 lb | 0.907 kg |
| 3 lb | 1.361 kg |
| 4 lb | 1.814 kg |
| 5 lb | 2.268 kg |
| 6 lb | 2.722 kg |
| 7 lb | 3.175 kg |
| 8 lb | 3.629 kg |
| 9 lb | 4.082 kg |
| 10 lb | 4.536 kg |
| 15 lb | 6.804 kg |
| 20 lb | 9.072 kg |
| 25 lb | 11.340 kg |
| 30 lb | 13.608 kg |
| 35 lb | 15.876 kg |
| 40 lb | 18.144 kg |
| 45 lb | 20.412 kg |
| 50 lb | 22.680 kg |
| 55 lb | 24.948 kg |
| 60 lb | 27.216 kg |
| 65 lb | 29.484 kg |
| 70 lb | 31.751 kg |
| 75 lb | 34.019 kg |
| 80 lb | 36.287 kg |
| 85 lb | 38.555 kg |
| 90 lb | 40.823 kg |
| 95 lb | 43.091 kg |
| 100 lb | 45.359 kg |
| 150 lb | 68.039 kg |
| 200 lb | 90.718 kg |
| 250 lb | 113.398 kg |
| 300 lb | 136.078 kg |
| 350 lb | 158.757 kg |
| 400 lb | 181.437 kg |
| 450 lb | 204.117 kg |
| 500 lb | 226.796 kg |
| 1000 lb | 453.592 kg |
| 2000 lb | 907.185 kg |
| 3000 lb | 1360.777 kg |
| 4000 lb | 1814.369 kg |
| 5000 lb | 2267.962 kg |
Takeaways: FAQs About the Pound-Kg Conversion
As a takeaway, we’ve answered the most common questions about the pound-kg conversion.
Is 1 pound the same as 1 kg?
No, pound and kg are different units of mass, the latter is an SI mass unit, while the pound is an Imperial unit. Generally speaking, one kilogram is about 2.2 times heavier than one pound.
Is 1 pound more than 1 kg?
No, one pound is less than one kilogram, since one pound (1 lb) is equal to 0.45359237 kilograms.
What is the easiest way to convert pounds to kilograms?
The easiest way to convert pounds to kilograms is by multiplying the figure of pounds by 0.45359237 or dividing it by 2.20462262.
What is the pound to kg conversion formula?
The pound to kg conversion formulas are as follows:
- Kilogram = Pounds x 0.45359237 (or)
- Kilogram = Pounds / 2.20462262
How many kg are 0.085 pounds?
0.085 pounds are equal to 0.039 kilograms.
How many kg are 0.1 pounds?
0.1 pounds are equal to 0.045 kilograms.
How many kg are 0.2 pounds?
0.2 pounds are equal to 0.091 kilograms.
How many kg are 0.22 pounds?
0.22 pounds are equal to 0.100 kilograms.
How many kg are 0.275 pounds?
0.275 pounds are equal to 0.125 kilograms.
How many kg are 0.3 pounds?
0.3 pounds are equal to 0.136 kilograms.
How many kg are 0.33 pounds?
0.33 pounds are equal to 0.150 kilograms.
How many kg are 0.34 pounds?
0.34 pounds are equal to 0.154 kilograms.
How many kg are 0.38 pounds?
0.38 pounds are equal to 0.172 kilograms.
How many kg are 0.386 pounds?
0.386 pounds are equal to 0.175 kilograms.
How many kg are 0.4 pounds?
0.4 pounds are equal to 0.181 kilograms.
How many kg are 0.5 pounds?
0.5 pounds are equal to 0.227 kilograms.
How many kg are 0.52 pounds?
0.52 pounds are equal to 0.236 kilograms.
How many kg are 0.57 pounds?
0.57 pounds are equal to 0.259 kilograms.
How many kg are 0.6 pounds?
0.6 pounds are equal to 0.272 kilograms.
How many kg are 0.7 pounds?
0.7 pounds are equal to 0.318 kilograms.
How many kg are 0.714 pounds?
0.714 pounds are equal to 0.324 kilograms.
How many kg are 0.75 pounds?
0.75 pounds are equal to 0.340 kilograms.
How many kg are 0.8 pounds?
0.8 pounds are equal to 0.363 kilograms.
How many kg are 0.9 pounds?
0.9 pounds are equal to 0.408 kilograms.
How many kg are 0.93 pounds?
0.93 pounds are equal to 0.422 kilograms.
How many kg are 0.96 pounds?
0.96 pounds are equal to 0.435 kilograms.
How many kg is 1 pound?
One pound is equal to 0.454 kilograms.
How many kg are 2 pounds?
Two pounds are equal to 0.907 kilograms.
How many kg are 3 pounds?
3 pounds are equal to 1.361 kilograms.
How many kg are 4 pounds?
4 pounds are equal to 1.814 kilograms.
How many kg are 5 pounds?
5 pounds are equal to 2.268 kilograms.
How many kg are 6 pounds?
6 pounds are equal to 2.722 kilograms.
How many kg are 7 pounds?
7 pounds are equal to 3.175 kilograms.
How many kg are 8 pounds?
8 pounds are equal to 3.629 kilograms.
How many kg are 9 pounds?
9 pounds are equal to 4.082 kilograms.
How many kg are 10 pounds?
10 pounds are equal to 4.536 kilograms.
How many kg are 20 pounds?
20 pounds are equal to 9.072 kilograms.
How many kg are 30 pounds?
30 pounds are equal to 13.608 kilograms.
How many kg are 40 pounds?
40 pounds are equal to 18.144 kilograms.
How many kg are 50 pounds?
50 pounds are equal to 22.680 kilograms.
How many kg are 60 pounds?
60 pounds are equal to 27.216 kilograms.
How many kg are 70 pounds?
70 pounds are equal to 31.751 kilograms.
How many kg are 80 pounds?
80 pounds are equal to 36.287 kilograms.
How many kg are 90 pounds?
90 pounds are equal to 40.823 kilograms.
How many kg are 100 pounds?
100 pounds are equal to 45.359 kilograms.
How many kg are 105 pounds?
105 pounds are equal to 47.627 kilograms.
How many kg are 110 pounds?
110 pounds are equal to 49.895 kilograms.
How many kg are 115 pounds?
115 pounds are equal to 52.163 kilograms.
How many kg are 120 pounds?
120 pounds are equal to 54.431 kilograms.
How many kg are 125 pounds?
125 pounds are equal to 56.699 kilograms.
How many kg are 130 pounds?
130 pounds are equal to 58.967 kilograms.
How many kg are 135 pounds?
135 pounds are equal to 61.235 kilograms.
How many kg are 140 pounds?
140 pounds are equal to 63.503 kilograms.
How many kg are 145 pounds?
145 pounds are equal to 65.771 kilograms.
How many kg are 150 pounds?
150 pounds are equal to 68.039 kilograms.
How many kg are 155 pounds?
155 pounds are equal to 70.307 kilograms.
How many kg are 160 pounds?
160 pounds are equal to 72.575 kilograms.
How many kg are 165 pounds?
165 pounds are equal to 74.843 kilograms.
How many kg are 170 pounds?
170 pounds are equal to 77.111 kilograms.
How many kg are 175 pounds?
175 pounds are equal to 79.379 kilograms.
How many kg are 180 pounds?
180 pounds are equal to 81.647 kilograms.
How many kg are 185 pounds?
185 pounds are equal to 83.915 kilograms.
How many kg are 190 pounds?
190 pounds are equal to 86.183 kilograms.
How many kg are 195 pounds?
195 pounds are equal to 88.451 kilograms.
How many kg are 200 pounds?
200 pounds are equal to 90.718 kilograms.
How many kg are 210 pounds?
210 pounds are equal to 95.254 kilograms.
How many kg are 220 pounds?
220 pounds are equal to 99.790 kilograms.
How many kg are 230 pounds?
230 pounds are equal to 104.326 kilograms.
How many kg are 240 pounds?
240 pounds are equal to 108.862 kilograms.
How many kg are 250 pounds?
250 pounds are equal to 113.398 kilograms.
How many kg are 260 pounds?
260 pounds are equal to 117.934 kilograms.
How many kg are 270 pounds?
270 pounds are equal to 122.470 kilograms.
How many kg are 280 pounds?
280 pounds are equal to 127.006 kilograms.
How many kg are 290 pounds?
290 pounds are equal to 131.542 kilograms.
How many kg are 300 pounds?
300 pounds are equal to 136.078 kilograms.
How many kg are 310 pounds?
310 pounds are equal to 140.614 kilograms.
How many kg are 320 pounds?
320 pounds are equal to 145.150 kilograms.
How many kg are 330 pounds?
330 pounds are equal to 149.685 kilograms.
How many kg are 340 pounds?
340 pounds are equal to 154.221 kilograms.
How many kg are 350 pounds?
350 pounds are equal to 158.757 kilograms.
How many kg are 360 pounds?
360 pounds are equal to 163.293 kilograms.
How many kg are 370 pounds?
370 pounds are equal to 167.829 kilograms.
How many kg are 380 pounds?
380 pounds are equal to 172.365 kilograms.
How many kg are 390 pounds?
390 pounds are equal to 176.901 kilograms.
How many kg are 400 pounds?
400 pounds are equal to 181.437 kilograms.
How many kg are 450 pounds?
450 pounds are equal to 204.117 kilograms.
How many kg are 500 pounds?
500 pounds are equal to 226.796 kilograms.
How many kg are 550 pounds?
550 pounds are equal to 249.476 kilograms.
How many kg are 600 pounds?
600 pounds are equal to 272.155 kilograms.
How many kg are 650 pounds?
650 pounds are equal to 294.835 kilograms.
How many kg are 700 pounds?
700 pounds are equal to 317.515 kilograms.
How many kg are 750 pounds?
750 pounds are equal to 340.194 kilograms.
How many kg are 800 pounds?
800 pounds are equal to 362.874 kilograms.
How many kg are 850 pounds?
850 pounds are equal to 385.554 kilograms.
How many kg are 900 pounds?
900 pounds are equal to 408.233 kilograms.
How many kg are 1000 pounds?
1000 pounds are equal to 453.592 kilograms.
References:
https://www.unitconverters.net/weight-and-mass/lbs-to-kg.htm
https://sejil.net/whats-meaning-of-lbs
https://www.nist.gov/si-redefinition/kilogram
