How many inches are in a centimeter?

1 centimeter equals approximately 0.3937 inches. The exact conversion factor is 0.393701 in/cm. For quick mental math, divide by 2.54.

cm a pulgadas, how do I convert?

Divide the centimeter value by 2.54. For example, 170 cm ÷ 2.54 = 66.93 inches. To get feet and inches, divide the result by 12: 66.93 ÷ 12 = 5 feet with 6.93 inches remaining.

What is 170 cm in feet and inches?

170 cm is approximately 5 feet 7 inches. Divide 170 by 2.54 to get 66.93 inches, then divide by 12 to get 5 feet with 6.93 inches left. That is close to 5 feet 7 inches.

What is 25 cm in inches?

25 cm equals 9.84 inches. This is the diagonal of a roughly 10 inch screen, which is common for small tablets and large phones.

How do I convert cm to inches for screen sizes?

Screen manufacturers list diagonal size in inches. To find the diagonal in inches from centimeters, divide by 2.54. A 60 cm diagonal screen is about 23.6 inches, a standard desktop monitor size.

Why is 2.54 the magic number?

In 1959, six English-speaking countries agreed to define the inch as exactly 25.4 mm (2.54 cm). Before that, each country had a slightly different inch. This international yard and pound agreement made conversions precise.

DevBento

Tools/Unit Converter/Centimeters to Inches Converter

Centimeters to Inches Converter

Convert centimeters to inches with exact formula, conversion table up to 200 cm, and real-world references for screens, clothing, and height.

0.39370079

1 Centimeter = 0.39370079 Inchs

Related Conversions

Inches to Centimeters

Feet to Meters

Meters to Feet

Related Tools

📐Unit Converter

Convert between length, weight, temperature, speed, area, volume, data, and time units instantly. Metric, imperial, and more. No server, no signup.

📐CSS Units Converter

Convert between CSS units instantly: px, rem, em, vw, vh, pt, cm, mm, and more. Set your base font size and viewport dimensions for accurate conversions.

rgbColor Converter + Palette

Convert colors between HEX, RGB, HSL, HSB, and CMYK. Generate complementary, analogous, and triadic palettes. Check WCAG contrast ratios in your browser.

Convert centimeters to inches

Enter a length in centimeters and get the inch equivalent. The conversion factor is 0.3937. Centimeters belong to the metric system. Inches are the standard unit in the US and UK for screens and clothing.

Conversion formula

The exact formula:

inches = centimeters × 0.393701

Or equivalently:

inches = centimeters ÷ 2.54

Worked example: converting 170 cm to inches.

170 ÷ 2.54 = 66.93 inches

To express as feet and inches: 66.93 ÷ 12 = 5 feet, remainder 6.93 inches. So 170 cm is approximately 5 feet 7 inches.

Extended conversion table

Centimeters	Inches	Real-world reference
1 cm	0.39 in	Width of a fingernail
2.54 cm	1.00 in	Exact conversion
5 cm	1.97 in	Width of a credit card
8 cm	3.15 in	Width of a smartphone
10 cm	3.94 in	Width of a passport
15 cm	5.91 in	Length of a standard pen
20 cm	7.87 in	Length of a standard ruler
25 cm	9.84 in	10 inch tablet diagonal
30 cm	11.81 in	Length of a 12 inch ruler
33 cm	12.99 in	13 inch laptop diagonal
38 cm	14.96 in	15 inch laptop diagonal
40 cm	15.75 in	Width of a standard keyboard
50 cm	19.69 in	20 inch monitor diagonal
55 cm	21.65 in	22 inch monitor diagonal
60 cm	23.62 in	24 inch monitor diagonal
70 cm	27.56 in	28 inch monitor diagonal
80 cm	31.50 in	32 inch TV diagonal
100 cm	39.37 in	1 meter / 40 inch TV diagonal
120 cm	47.24 in	50 inch TV diagonal
140 cm	55.12 in	55 inch TV diagonal
170 cm	66.93 in	5 ft 7 in, average human height
180 cm	70.87 in	5 ft 11 in, tall adult height
200 cm	78.74 in	6 ft 7 in, very tall / door height

Real-world use cases

Screen sizes (monitors, TVs, TVs)

TV and monitor manufacturers advertise diagonal screen size in inches, even in metric countries. A 55 inch TV has a diagonal of about 140 cm. A 24 inch monitor is about 61 cm across the diagonal. When shopping for screens in a country that lists centimeters, divide by 2.54 to get the inch value.

Clothing sizes (EU/UK/US)

European clothing sizes use centimeters for body measurements, while US and UK sizes use inches. A chest measurement of 100 cm is about 39.4 inches. A waist of 80 cm is about 31.5 inches. Many online sizing charts include both units, but if you only see cm, divide by 2.54 to cross-reference.

Body height

Most of the world reports height in centimeters. In the US and UK, height is expressed in feet and inches. To convert: divide the cm value by 2.54 to get total inches, then divide by 12 for feet. For example, 165 cm = 64.96 inches = 5 feet 5 inches.

Furniture and construction

IKEA and European furniture manufacturers list dimensions in cm. A bookshelf that is 80 cm wide is about 31.5 inches. A doorway at 200 cm tall is about 78.7 inches, or 6 feet 7 inches. Construction materials like lumber, drywall, and tile are often sold in metric dimensions outside the US.

Gotchas

Rounding errors compound when you chain conversions. If you convert cm to inches and then inches to cm, you might not get the original number back due to intermediate rounding. Always use the full precision (2.54 exactly) for chained conversions.

The shorthand “divide by 2.5” gives results about 1.6% too high. For example, 100 cm ÷ 2.5 = 40 inches, but the correct answer is 39.37 inches. Fine for mental estimates, wrong for woodworking or engineering.

Screen diagonal does not tell you width or height. A 24 inch monitor (61 cm diagonal) is about 53 cm wide and 30 cm tall in a 16:9 aspect ratio. You need to account for aspect ratio when comparing screen dimensions.

Reverse conversion: Inches to Centimeters
Full converter: Unit Converter
Weight conversion: Kg to Lbs

🔒

Nothing you paste leaves this tab. Every tool runs entirely in your browser — no upload, no server, no account.