How Many Inches is 20 CM?

20 cm to inches: When it comes to length measurements, we often find ourselves switching between units like centimeters (cm) and inches. While centimeters are widely used in most parts of the world, inches are more common in the United States and a few other countries. 

To help your child convert 20 cm to inches, we will explain the process of converting centimeters to inches step by step. It helps them utilize the knowledge in practical uses and never get stuck when they need to convert centimeters to inches.

Read More: Measurement

Understanding the Basics of Centimetre and Inches

The centimetre and inches both are units of length. Let’s first understand the two units:

Centimetre (cm): A unit of length where 1 cm is equal to one-hundredth part of a meter. It is part of the metric system, which is widely used worldwide.

Inch (in): An imperial unit of length mostly used in the U.S., Canada, and the U.K. One-inch equals 2.54 centimetres.

So, the relationship can be expressed as:

1 inch = 2.54 cm

Or, conversely:

1 cm = 0.3937 inches 

Enroll Now for Maths Online Classes

How Many Inches is 20 cm?

The formula to convert centimeters to inches is given as:

Inches = Centimetres (cm) ÷2.54

Substituting the value of 20 cm, we get:

Inches = 20 ÷2.54 = 7.874 (approx.)

So, 20 cm = 7.87 inches (rounded to two decimal places).

Read More: CM to Feet

Steps to Convert Centimetres to Inches 

Converting centimetres to inches can be carried out through some simple steps. Let’s follow the steps given below to know 20 cm is how many inches.  

Step 1: Remember the Conversion Factor

1 inch = 2.54 cm

Step 2: Apply the Formula

Inches = cm/2.54

Step 3: Make the Calculation

20 cm = 20/2.54 = 7.874 inches

Step 4: Round the Result (if needed)

You can round to 7.87 inches (2 decimal places) or 7.9 inches (one decimal places)

Inches for 20 cm in Different Scenarios

Sometimes the value of 20 cm in inches requires different levels of precision depending on the situation:

• For everyday usage, we can consider 20 cm is equal to 7.9 inches

• For more exact measurement, 20 cm = 7.874 inches

• If you need to round off the value to the nearest whole number, then we can write 20cm = 8 inches

Read More: Celsius to Fahrenheit

Centimetre to Inches Conversion Table

Students may require a quick reference for conversion of cm to inches. The conversion table below will help remember the values in inches corresponding to cm.

Why Do We Need to Convert Centimetres to Inches?

Students may wonder why is knowing 20 cm in inches or similar conversions important? Here are a few real-life scenarios where such conversions become useful:

Shopping Online

Many international clothing or accessory sites list dimensions in inches. If you’re used to centimetres, then knowing how many inches is 20 cm helps you order the right size.

Education and Projects

Students often encounter problems where they need to convert between units, especially in math and science. A knowledge of conversion factors helps them find the solutions quickly.

Home Accessories

Measuring furniture, sofas, or decor items sometimes requires measurements in both centimetres to inches, depending on where you buy the products.

Travel

Baggage dimensions can be in either cm or inches, so identifying the correct size becomes easier at airports.

Health and Fitness

Height, waist, or other measurements may use either cm or inches as units depending on the country.

Read More: Rational Number

Using  Conversion Calculator  To Convert Cm to Inches

A conversion calculator is a digital tool that instantly calculates the inches values from the given centimetre values. 

If your child is working with large numbers or handling multiple conversions in a single problem, a conversion calculator becomes useful for getting quick answers. You enter the value in cm, and it gives you the corresponding value in inches.

However, encourage your child to learn and apply the manual method of conversions because dependency on such tools hampers the development of analytical skills. Moreover, such calculators are not allowed in exams.

PW CuriousJr App

Centimetres to Inches Conversion Solved Examples

Let’s go through the following examples to strengthen the concept of converting centimetres to inches:

1. Convert 40 cm to inches.

Solution: 40 cm = 40/2.54 = 15.748 inches = 15.75 inches 

2. How much is the length in inches for 100 cm?

Solution: 100 cm = 100/2.54 = 39.37 inches

3. If you divide 24 cm into three equal parts, what is the dimension of each part in inches?

Solution: 24/3 = 8 cm

8 cm = 8/2.54 = 3.15 inches

So, the dimension of each part is 3.15 inches. 

4. The height of a boy is 156 cm. What is his height in feet and inches?

Solution: 156 cm = 158/2.54 = 62.2 inches = 62 inches (approx.)

62 inches = 5 feet 2 inches

So, the height of the boy is 5 feet 2 inches.

As units of length, both centimetres and inches are important parameters. With the knowledge of the conversion factor and precision requirements, your child can easily work out any conversion between centimetres and inches, from small values to larger ones.

Also Read: Geometry

Improve Your Child’s Maths Skills With CuriousJr Online Tuition Classes

Help your child gain confidence and enjoy learning maths with CuriousJr’s online maths classes. Our interactive classes focus on understanding numbers, equations, problem solving, and mathematical concepts at a pace that suits each student. This helps them build confidence and enjoy learning maths.

Every live class has two mentors. One explains the maths step by step, while the other provides immediate support and answers questions during the lesson. We also provide help with homework, practice worksheets, and regular progress updates for parents so you can see improvement in topics such as fractions, algebra, geometry, and data interpretation.

CuriousJr helps students understand and apply math concepts, not just complete exercise.

Book a demo today and give your child the support to excel in maths.