kg to lbs Converter

kg to lbs Converter

This is a free online Kilograms (kg) to Pounds (lbs) weight conversion calculator tool. You will find everything about kg and lbs, definitions, conversion, formulas, examples, and more.

Created by Commontools | Updated on: April 03, 2023
       




Kilograms (kg) Value



Pounds (lbs) Value







Welcome to our Kg to Lbs converter, a handy tool designed to help you easily convert weight or mass measurements from kilograms (kg) to pounds (lbs). Whether you need to convert weight for business, personal or educational purposes, this tool will make the conversion process quick and straightforward. 

In this article, we'll take you through everything you need to know about converting kg to lbs, show you how to use our converter, and answer some common questions that you may have about this type of conversion. 

So, let's dive in and learn how to easily make these conversions!

What is a Kilogram?

The kilogram (kg) is the fundamental unit of mass in the metric system, defined as being very nearly equal to the mass of 1,000 cubic centimeters of water. Additionally, the pound is defined as being exactly equal to 0.45359237 kg.

Originally, the kilogram was represented by a solid platinum cylinder in the late 18th century. However, measurements of the mass of a volume of water proved to be imprecise and inconvenient, leading to the platinum artifact becoming the standard. Later, in 1889, a new standard kilogram was introduced, which was also a solid cylinder made of a platinum-iridium alloy, with a height equal to its diameter. This standard kilogram was kept at the International Bureau of Weights and Measures laboratory in Sèvres, France.

In 1989, it was discovered that the standard kilogram kept at Sèvres was slightly lighter than other copies of the standard, which posed a problem since the kilogram was defined by a physical artifact with a changing mass. To address this issue, the General Conference on Weights and Measures (CGPM) agreed in 2011 to redefine the kilogram not by a physical artifact, but by a fundamental physical constant.

Planck's constant was chosen as the constant to define the kilogram, and it was defined as equal to 6.62607015 × 10^-34 joule second. Since the second and the meter were already defined in terms of the frequency of a spectral line of cesium and the speed of light, respectively, the kilogram could then be determined by accurate measurements of Planck’s constant. This proposal was accepted at the 2018 CGPM, and as of May 20, 2019, the kilogram is defined by Planck’s constant.

Overall, the kilogram is the basic unit of mass in the metric system, initially represented by a solid platinum cylinder and later replaced by a standard kilogram made of a platinum-iridium alloy. The kilogram is now defined by Planck's constant instead of a physical artifact.

Interesting Fact Related to Kilogram

  • The kilogram is a unit of measurement for mass in the International System of Units (SI), denoted by the symbol kg.
  • It is widely used in various fields such as science, engineering, and commerce worldwide, and is commonly referred to as a "kilo" in informal language.
  • The kilogram is defined by three fundamental physical constants: a specific atomic transition frequency Δ νCs that defines the duration of a second, and the speed of light c that, when combined with the second, determines the length of a meter.
  • The kilogram is defined based on the second and the meter, both of which are grounded in fundamental physical constants.
  • This allows metrology laboratories equipped with the proper tools to calibrate mass measurement instruments like the Kibble balance, serving as the primary standard to determine an exact kilogram mass.
  • Initially, the kilogram was defined as the mass of one liter of water.
  • The pound is defined precisely as 0.45359237 kg.
  • Originally, the kilogram was represented in the late 18th century by a solid cylinder of platinum.
  • The International Prototype Kilogram (IPK), also known as Le Grand K or Big K, was created from an alloy of 90% platinum and 10% iridium in 1879 and still serves as the standard definition of the kilogram to date.
  • The IPK has been preserved at the International Bureau of Weights and Measures (BIPM) in Sèvres, France since 1889.
  • In November 2018, scientists voted to redefine the kilogram by fixing its value to Planck’s constant h instead of relying on a physical object as its standard definition.
  • This redefinition came into effect on May 20, 2019.
  • With the new definition, any device that can measure frequency can accurately determine mass.
  • The new definition also eliminates the need for a physical object as a standard definition for mass measurement purposes.
  • This change makes it easier for scientists to measure masses with greater accuracy than ever before.

What is a Pound?

The pound is a unit of weight measurement in the avoirdupois, troy, and apothecaries' weight systems. It is equal to 16 ounces, 7,000 grains, or 0.45359237 kg in the avoirdupois system, and 12 ounces, 5,760 grains, or 0.3732417216 kg in the troy and apothecaries' systems. The abbreviation "lb" is derived from the Roman ancestor of the modern pound, the libra.

In medieval England, several derivations of the libra were proposed. One of the earliest was the Tower pound, which contained 5,400 grains, or 0.350 kg, and was used to weigh precious metals and drugs. The mercantile pound, which contained 6,750 grains, or 0.437 kg, was also proposed. However, the troy pound, which originated in Troyes, France, replaced the Tower pound as the standard for gold and silver in 1527 due to its greater weight. The 16-ounce avoirdupois pound was adopted in the 16th century to replace the mercantile pound due to increased trade with France.

The British monetary pound is historically linked to the minting of silver coins, or sterlings, from the Tower pound. Large payments were measured in "pounds of sterlings," which was later shortened to "pounds sterling." Overall, the pound has a rich history of evolution and adaptation throughout different weight systems and time periods.

Now, let's check the formula for Kg to Lbs conversion.

Interesting Fact Related to Pound

 

  • The pound or pound-mass is a unit of mass used in British imperial and United States customary systems of measurement.
  • It has had various definitions in history, but the most commonly used definition today is the international avoirdupois pound, which is exactly 0.453 592 37 kilograms.
  • The avoirdupois pound is divided into 16 avoirdupois ounces and is symbolized by lb, lb m, # (in the US), ℔ or ″̶ (specifically for the avoirdupois pound).
  • The pound has been historically used as a measure of weight or mass, with the earliest known standard weights being created in the ancient Middle East around 4000 BC, based on the shekel unit of weight defined as one barley grain.
  • The Roman libra (pound) was equivalent to about 328.9 grams and was divided into 12 unciae (ounces).
  • The pound has been used as a unit of mass in many different cultures throughout history.
  • In England, Henry VII authorized a new standard for the avoirdupois pound in 1496, which became known as the London pound.
  • In the United States, the avoirdupois pound was adopted as a standard unit of mass by an act of Congress on July 28, 1866.
  • The troy pound, first used in England during the Middle Ages, was adopted by Henry VIII in 1527 for his coinage reform and is still used today for precious metals such as gold and silver.
  • The metric system uses the kilogram as its base unit of mass, but other units of mass are also used in various contexts around the world, such as the gram, tonne, carat (for gemstones), and atomic mass unit.

The Formula for Kilograms to Pounds Conversion

The formula for converting kilograms (kg) to pounds (lbs) is:

Pounds (lbs) = Kilograms (kg) x 2.2046

This formula is based on the conversion factor of 2.2046, which is the equivalent weight of one pound in kilograms. To convert a weight or mass measurement from kg to lbs, simply multiply the weight in kg by the conversion factor of 2.2046. This will give you the weight in pounds.

For example, if you want to convert 50 kg to lbs, you would use the formula:

Pounds (lbs) = 50 kg x 2.2046

Pounds (lbs) = 110.23 lbs

Therefore, 50 kg is equal to 110.23 lbs.

How to convert kg to pounds?

If you're looking to convert weight or mass measurements from kilograms (kg) to pounds (lbs), you've come to the right place! Converting kg to lbs is a simple process that can be done in just a few steps.

Here's what you need to do:

  1. Multiply the weight or mass in kg by the conversion factor 2.2046. For instance, if you want to convert 75 kg to lbs, you would multiply 75 by 2.2046, which equals 165.3465 lbs.
  2. Congratulations! You have now converted kg to lbs. You can now showcase your mastery of this conversion to your American friends.

It's important to note that the conversion factor you need to keep in mind is 1 kg = 2.2046 lbs. Remember to use the correct symbols when referring to kilograms and pounds: kg for kilograms and lbs for pounds.

Don't worry if you're not a math expert - our Kg to Lbs converter makes it even easier by doing the calculation for you! Simply input the weight in kg and let the converter do the rest.

So, there you have it - a simple and easy way to convert weight or mass from kilograms to pounds. Now you can confidently convert any weight measurement you need with ease!

Relationship Between Kilograms to Pounds

Understanding the relationship between kilograms and pounds is essential for many applications. Fortunately, converting between these two units of measurement is easy, provided that you know the correct formula to use.

To convert kilograms (kg) to pounds (lbs), the formula is:

Pounds (lbs) = Kilograms (kg) x 2.2046

Conversely, to convert pounds to kilograms, the formula is:

Kilograms (kg) = Pounds (lbs) x 0.4536

It's important to note that 1 kg is equal to 2.2046 pounds, while 1 pound is equal to 0.45359237 kilograms. These conversion factors are the key to understanding the relationship between kilograms and pounds.

For example, if you want to convert 10 kg to lbs, you would use the formula:

Pounds (lbs) = 10 kg x 2.2046

Pounds (lbs) = 22.046 lbs

Therefore, 10 kg is equal to 22.046 lbs.

Similarly, if you want to convert 50 lbs to kg, you would use the formula:

Kilograms (kg) = 50 lbs x 0.4536

Kilograms (kg) = 22.68 kg

Therefore, 50 lbs is equal to 22.68 kg.

By understanding the relationship between kilograms and pounds, and knowing the conversion formulas, you can easily convert weight measurements between different units and systems. This knowledge is essential for a variety of everyday tasks, from weighing yourself to measuring ingredients for recipes or packages for shipping.

Now, lets understand how one can use our kg to lbs conversion tool.

How to use our kg to lbs converter calculator tool?

Here's how to use it:

  1. Locate the field labeled "weight in kg" and enter the weight in kilograms that you want to convert. For example, you might enter 65 kg.
  2. The Kg to Lbs converter will automatically calculate the equivalent weight in pounds (lbs) and display the result in the field labeled "weight in lbs." For example, if you entered 65 kg, the converter will show the equivalent weight in pounds as 143.3 lbs.
  3. The best part? You can also use our converter for reverse conversions! Just enter the weight in pounds in the "weight in lbs" field, and the converter will automatically display the equivalent weight in kilograms. For example, if you enter 150 lbs in the "weight in lbs" field, the converter will show the equivalent weight in kilograms as 68.04 kg.

Difference Between Kilograms and Pounds

Here is a complete table outlining the differences between kilograms and pounds:

  Kilograms (kg) Pounds (lbs)
Definition The kilogram is the fundamental unit of mass and weight measurement in the International System of Units (SI). The pound is a unit of mass and weight measurement that is widely used in the British imperial and United States customary systems of measurement.
Abbreviation kg lbs
Equivalent 1 kg = 2.20462 lbs 1 lb = 0.45359 kg
Metric or Imperial Metric Imperial
Usage Kilograms are used primarily in countries that have adopted the metric system. Pounds are commonly used in the United States and United Kingdom for everyday weight measurements.
Precision Kilograms are a more precise unit of measurement compared to pounds. Pounds are not as precise as kilograms due to their larger size.
Symbol The symbol for kilograms is "kg". The symbol for pounds is "lbs".
Base unit The kilogram is the base unit of mass and weight measurement in the International System of Units (SI). The pound is not a base unit, but rather a derived unit based on the kilogram.
Conversion To convert kilograms to pounds, multiply the weight in kg by 2.20462. To convert pounds to kilograms, multiply the weight in lbs by 0.45359.

Understanding the differences between kilograms and pounds is important for various applications, from weighing ingredients in recipes to measuring objects for shipping or transportation. Whether you are working with the metric system or the imperial system, knowing the unique characteristics of each unit of measurement can help ensure accurate and reliable results.

Kg to Lbs Conversion Table for some common values

Here is a conversion table showing the weight values from 1 kg to 100 kg, converted into pounds:

Kilograms (kg) Pounds (lbs)
1 2.2046
2 4.4092
3 6.6139
4 8.8185
5 11.0231
6 13.2277
7 15.4324
8 17.637
9 19.8416
10 22.0462
11 24.2508
12 26.4555
13 28.6601
14 30.8647
15 33.0693
16 35.274
17 37.4786
18 39.6832
19 41.8878
20 44.0925
21 46.2971
22 48.5017
23 50.7063
24 52.9109
25 55.1156
26 57.3202
27 59.5248
28 61.7294
29 63.9341
30 66.1387
31 68.3433
32 70.5479
33 72.7526
34 74.9572
35 77.1618
36 79.3664
37 81.5711
38 83.7757
39 85.9803
40 88.1849
41 90.3896
42 92.5942
43 94.7988
44 97.0034
45 99.2081
46 101.4127
47 103.6173
48 105.8219
49 108.0266
50 110.2312
51 112.4358
52 114.6404
53 116.8451
54 119.0497
55 121.2543
56 123.4589
57 125.6636
58 127.8682
59 130.0728
60 132.2774
61 134.4821
62 136.6867
63 138.8913
64 141.0959
65 143.3006
66 145.5052
67 147.7098
68 149.9144
69 152.1191
70 154.3237
71 156.5283
72 158.7329
73 160.9376

Use this table as a reference to quickly and easily convert weight or mass measurements from kilograms to pounds, or vice versa.

Examples

Here are three examples of converting kilograms (kg) to pounds (lbs) with the complete conversion process step by step:

Example 1: Convert 20 kg to lbs.

  • Step 1: Multiply the weight in kg by the conversion factor 2.2046. 20 kg x 2.2046 = 44.092 lbs.
  • Step 2: The equivalent weight in pounds (lbs) is 44.092 lbs.

Answer: 20 kg is equal to 44.092 lbs.

Example 2: Convert 40.5 kg to lbs.

  • Step 1: Multiply the weight in kg by the conversion factor 2.2046. 40.5 kg x 2.2046 = 89.29245 lbs.
  • Step 2: Round off the result to the desired decimal place, if needed. In this case, let's round off to the nearest hundredth. 89.29245 lbs rounded to the nearest hundredth is 89.29 lbs.
  • Step 3: The equivalent weight in pounds (lbs) is 89.29 lbs.

Answer: 40.5 kg is equal to 89.29 lbs.

Example 3: Convert 75 kg to lbs.

  • Step 1: Multiply the weight in kg by the conversion factor 2.2046. 75 kg x 2.2046 = 165.3465 lbs.
  • Step 2: The equivalent weight in pounds (lbs) is 165.3465 lbs.

Answer: 75 kg is equal to 165.3465 lbs.

Frequently Asked Questions (FAQs)

How do you convert kg to lbs weight? 

To convert kilograms (kg) to pounds (lbs), you need to use the conversion factor of 2.2046. Multiply the weight in kg by 2.2046 to get the weight in lbs. The formula for this conversion is:

Pounds (lbs) = Kilograms (kg) x 2.2046

How many kilograms are exactly in a pound? 

There are approximately 0.4536 kilograms (kg) in a pound (lb). This conversion factor can be used to convert weight measurements from lbs to kg by multiplying the weight in lbs by 0.4536.

How can I convert the price per kg to the price per pound? 

Here's what you need to do:

  1. Multiply the price per kg by the conversion factor of 0.4536, which is the equivalent weight of one pound in kilograms. For example, if an item costs $8 per kg, the price per pound would be $8 x 0.4536, which equals $3.63 per pound.
  2. Congratulations! You have now successfully converted the price per kg to price per pound. Use this newfound power to make informed purchasing decisions and compare prices more accurately.

What is the conversion factor for converting kg to lbs? 

A: The conversion factor for converting kg to lbs is 2.2046. This means that 1 kg is equal to 2.2046 lbs.

Why do I need to convert kg to lbs?

You may need to convert kg to lbs for various reasons, such as if you're shopping for products priced in different weight units, or if you're trying to calculate the weight of a package for shipping purposes.

Is there an easier way to convert kg to lbs than using a calculator? 

Yes, there are many online conversion tools that allow you to easily convert kg to lbs without having to do the calculation manually. Our Kg to Lbs converter is a great example!

How do I know if I need to use kg or lbs for a particular task?

This will depend on the requirements of the task at hand. Generally, kg is used in countries that have adopted the metric system, while lbs is more commonly used in the United States and other countries that use imperial units.

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