How to Convert Pounds to Kilograms

Nowadays, there are many tools on the internet that allow us to convert pounds to kilograms accurately; but in school it is different, the teacher will ask you to clearly describe the steps or require an explanation for each step in the work. One of the simplest methods is to just divide the weight in pounds by 2.2 and you’ll get an approximate result. This article walks you through the algebraic steps to convert pounds to kilograms.

Table of Contents

Applying formula

{“smallUrl”:”https://www.wikihow.com/images_en/thumb/2/27/Convert-Pounds-to-Kilograms-Step-1-Version-2.jpg/v4-728px-Convert-Pounds- to-Kilograms-Step-1-Version-2.jpg”,”bigUrl”:”https://www.wikihow.com/images/thumb/2/27/Convert-Pounds-to-Kilograms-Step-1- Version-2.jpg/v4-728px-Convert-Pounds-to-Kilograms-Step-1-Version-2.jpg”,”smallWidth”:460,”smallHeight”:345,”bigWidth”:728,”bigHeight” :546,”licensing”:”<div class=”mw-parser-output”></div>”}

Fill in the pound value in the blank with “lb” in the formula. This is the formula for determining the number of kilograms. We have 1 kilogram equal to 2.2046226218 pounds (rounded here to 2.2).

____ lb * 1 kg
2.2046226218 lb = ? kg

{“smallUrl”:”https://www.wikihow.com/images_en/thumb/2/20/Convert-Pounds-to-Kilograms-Step-2-Version-2.jpg/v4-728px-Convert-Pounds- to-Kilograms-Step-2-Version-2.jpg”,”bigUrl”:”https://www.wikihow.com/images/thumb/2/20/Convert-Pounds-to-Kilograms-Step-2- Version-2.jpg/v4-728px-Convert-Pounds-to-Kilograms-Step-2-Version-2.jpg”,”smallWidth”:460,”smallHeight”:345,”bigWidth”:728,”bigHeight” :546,”licensing”:”<div class=”mw-parser-output”></div>”}

Do the division to get the result in kilograms. You’ll have to divide 1 kg by 2.2 lb first, and then multiply that by the pound value you need to convert.

Example: You need to convert 4 pounds to kilograms. First, you divide 1 kg by 2.2 lb to get 0.45. Then multiply 0.45 by 4 to get 1.81. So, 4 pounds equals 1.81 kilograms.

Mental arithmetic

{“smallUrl”:”https://www.wikihow.com/images_en/thumb/c/c7/Convert-Pounds-to-Kilograms-Step-3-Version-2.jpg/v4-728px-Convert-Pounds- to-Kilograms-Step-3-Version-2.jpg”,”bigUrl”:”https://www.wikihow.com/images/thumb/c/c7/Convert-Pounds-to-Kilograms-Step-3- Version-2.jpg/v4-728px-Convert-Pounds-to-Kilograms-Step-3-Version-2.jpg”,”smallWidth”:460,”smallHeight”:345,”bigWidth”:728,”bigHeight” :546,”licensing”:”<div class=”mw-parser-output”></div>”}

Subtract the first digit from the total weight, then divide the result by two. This is the method that most nurses abroad use to calculate the dose of a patient’s medication because medication is usually measured in kilograms while a patient’s weight is usually measured in pounds. ^{[1] X Research Source}

Example: Convert 46 lb to kg. Subtract the first digit from 46 lb to 42 lb. Then, divide 42 by 2, the result will be 21 kilograms. (Meanwhile, the result when calculated using the formula is 20.87 kilograms, rounded to 21 kilograms.)

Advice

If you are doing homework, make sure you cover all the steps and apply the first method.
By dividing the mass in pounds by 2.2 gives you the relative weight in kilograms. Therefore, if you want your answers to be more accurate, you should use formulas and calculators.

Warning

Mental methods for converting pounds and kilograms are approximate.

Steps

Applying formula

Mental arithmetic

Advice

Warning

Related Posts