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Centimeters to Inches Converter (cm to in)

This centimeters to inches calculator converts cm to in instantly.

⇄
Formula: in = cm ÷ 2.54

How to Convert Centimeters to Inches — Step by Step

1
Start with the length in centimeters (cm).
Example: 10 cm
2
Divide by 2.54 to convert cm to inches.
10 ÷ 2.54 = 3.9370
3
The result is the inches value (in).
Answer: 3.9370 in
4
Optional check. Multiply the inches result by 2.54 to confirm you get back the original cm value.
3.9370 × 2.54 = 10 cm ✓
Note: This is the full rule: in = cm ÷ 2.54. Since 1 in = 2.54 cm, the conversion is exact.
Quick Reference

Popular CM to Inches Conversions

10 cm
3.94
inches
20 cm
7.87
inches
18 cm
7.09
inches
12 cm
4.72
inches
17 cm
6.69
inches
80 cm
31.50
inches
22 cm
8.66
inches
25 cm
9.84
inches
60 cm
23.62
inches
100 cm
39.37
inches
21 cm
8.27
inches
24 cm
9.45
inches
26 cm
10.24
inches
30 cm
11.81
inches
32 cm
12.60
inches
70 cm
27.56
inches
90 cm
35.43
inches
300 cm
118.11
inches
15 cm
5.91
inches
16 cm
6.30
inches
28 cm
11.02
inches
29 cm
11.42
inches
35 cm
13.78
inches
40 cm
15.75
inches

Centimeters to Inches Formula

in = cm ÷ 2.54 Inches = Centimeters ÷ 2.54

To convert centimeters to inches, divide the centimeter value by 2.54. This works because 1 inch = 2.54 cm.

Worked Examples (Convert cm to in)

1 cm to in
1 ÷ 2.54 = 0.3937 in
Small measurement
10 cm to in
10 ÷ 2.54 = 3.9370 in
Common length
2.54 cm to in
2.54 ÷ 2.54 = 1 in
Exactly 1 inch
30 cm to in
30 ÷ 2.54 = 11.8110 in
Standard ruler length

How to Convert Centimeters to Inches

Take the value in centimeters, divide by 2.54, and the result is in inches.

Reverse Formula (Inches to Centimeters)

cm = in × 2.54 Centimeters = Inches × 2.54

Use our Inches to Centimeters Converter → for the reverse operation.

Centimeters to Inches Conversion Table

Use this quick chart to convert common centimeter values into inches. It includes popular conversions such as 10 cm to inches, 20 cm to inches, 80 cm to inches, 150 cm to inches, 160 cm to inches, 180 cm to inches, and 200 cm to inches. To convert centimeters to inches manually, use the formula inches = centimeters ÷ 2.54.

Centimeters (cm) Inches (in) Quick Answer
10 cm 3.94 in About 4 inches
12 cm 4.72 in About 4.7 inches
17 cm 6.69 in About 6.7 inches
18 cm 7.09 in About 7.1 inches
20 cm 7.87 in About 7.9 inches
21 cm 8.27 in About 8.3 inches
22 cm 8.66 in About 8.7 inches
24 cm 9.45 in About 9.5 inches
28 cm 11.02 in About 11 inches
35 cm 13.78 in About 13.8 inches (1 ft 1.8 in)
45 cm 17.72 in About 17.7 inches (1 ft 5.7 in)
60 cm 23.62 in About 23.6 inches (1 ft 11.6 in)
70 cm 27.56 in About 27.6 inches (2 ft 3.6 in)
80 cm 31.50 in About 31.5 inches (2 ft 7.5 in)
120 cm 47.24 in About 47.2 inches (3 ft 11.2 in)
140 cm 55.12 in About 55.1 inches (4 ft 7.1 in)
150 cm 59.06 in About 59.1 inches (4 ft 11.1 in)
160 cm 62.99 in About 63 inches (5 ft 3 in)
180 cm 70.87 in About 70.9 inches (5 ft 10.9 in)
200 cm 78.74 in About 78.7 inches (6 ft 6.7 in)

About Centimeters and Inches

Centimeters (cm) are metric units used worldwide for everyday measurements, while inches (in) are common in the US and a few other places for screens, paper sizes, and body measurements. The relationship is exact: 1 inch equals 2.54 cm.

Key Reference Points

Length Centimeters (cm) Inches (in) Context
1 inch 2.54 cm 1 in Exact conversion base
Standard ruler 30 cm 11.81 in Common school ruler
1 meter 100 cm 39.37 in Metric reference
Hand width (approx.) 10 cm 3.94 in Rough visual reference

Frequently Asked Questions

60 cm is about 23.6 inches. That is almost exactly 2 feet. You'll often see this size for small TVs, carry on bags, or waistlines.
One inch is exactly 2.54 centimeters. If you want to go the other way, one centimeter is about 0.39 inches.
Just divide 100 by 2.54. You'll get 39.37 inches. That is slightly more than 3 feet and 3 inches. This is a great trick to remember because 100 centimeters makes up exactly one meter.
Someone who is 160 cm tall is right around 5 feet 3 inches. This happens to be the average height for women in the US.
Not quite. One centimeter is actually closer to a third of an inch. A true half inch is 1.27 centimeters.
The easiest mental trick is to multiply your centimeters by 0.4. It gets you very close. Another simple way is to remember that 5 centimeters is roughly 2 inches.
Most of the world uses the metric system because counting by tens is very simple. The US, Liberia, and Myanmar still rely on the older imperial system for daily life. The UK actually mixes both. They might use centimeters for official paperwork but inches for road signs and TVs.
It's incredibly accurate. Both methods give you basically the same number. Multiplying by 0.394 is perfect for almost any normal project you might do at home.
You absolutely can. Just type in your height in centimeters. The tool will tell you the total inches. To find your feet and inches, just divide that total by 12. For example, 175 cm comes out to roughly 5 feet and 9 inches.

Length Converters

Inches to Centimeters Centimeters to Meters Meters to Centimeters Inches to Feet Feet to Inches