Inches to centimeters converter

1 in = 2.54 cm (exact). To convert inches to centimeters, multiply by 2.54. Example: 10 in = 25.4 cm.

Result (cm)

cm = in × 2.54 · Swap: Centimeters to inches

Open the full tool: Unit converter →

Inches to centimeters chart

InchesCentimeters
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
5 in12.7 cm
6 in15.24 cm
8 in20.32 cm
10 in25.4 cm
12 in30.48 cm
13 in33.02 cm
14 in35.56 cm
15 in38.1 cm
15.6 in39.624 cm
17 in43.18 cm
19 in48.26 cm
21.5 in54.61 cm
24 in60.96 cm
27 in68.58 cm
32 in81.28 cm
43 in109.22 cm
50 in127 cm
55 in139.7 cm
65 in165.1 cm
75 in190.5 cm

How to convert inches to centimeters

Formula: cm = in × 2.54. Worked example: 10 in = 25.4 cm. Quick estimate: multiply by about 2.5 — the error is 1.6%, fine for everyday use but not for engineering or shopping by exact size.

About these units

Since 1959 the international inch is defined as exactly 25.4 mm, so 1 inch = 2.54 cm with no rounding. Inches are used for screen and TV diagonals, wheel and rim sizes, jeans waist sizes and many US/UK product dimensions.

Category: length. Results on this page are calculated in your browser and rounded to 7 significant digits; the table above uses 6. For other units of length open the full unit converter, or use the reverse page — centimeters to inches.

FAQ

How many centimeters are in one in?

1 in = 2.54 cm exactly. Conversely, 1 cm = 0.3937008 in.

What is 100 in in centimeters?

100 in = 254 cm.

Is this converter accurate?

Yes — it uses the official definitions (1 in = 0.0254 m, 1 cm = 0.01 m) and shows results rounded to 7 significant digits.

🔗 Share this page

TelegramWhatsAppX