Inches to Centimeters converter (in → cm)
328,505 in = 834,402.7 cm. 1 in = 2.54 cm. Type any value below for an instant answer, or find your number in the conversion chart.
in to cm formula
Worked example: 16 in = 40.64 cm. The defining value behind this factor is documented on our length & distance standards page.
Inches to Centimeters chart
Includes standard reference values plus the specific numbers people search for most.
| Inches (in) | Centimeters (cm) |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 7 in | 17.78 cm |
| 8 in | 20.32 cm |
| 9 in | 22.86 cm |
| 10 in | 25.4 cm |
| 11 in | 27.94 cm |
| 12 in | 30.48 cm |
| 14 in | 35.56 cm |
| 15 in | 38.1 cm |
| 16 in | 40.64 cm |
| 17 in | 43.18 cm |
| 18 in | 45.72 cm |
| 20 in | 50.8 cm |
| 23 in | 58.42 cm |
| 24 in | 60.96 cm |
| 25 in | 63.5 cm |
| 28 in | 71.12 cm |
| 30 in | 76.2 cm |
| 32 in | 81.28 cm |
| 40 in | 101.6 cm |
| 48 in | 121.92 cm |
| 50 in | 127 cm |
| 55 in | 139.7 cm |
| 75 in | 190.5 cm |
| 85 in | 215.9 cm |
| 100 in | 254 cm |
| 150 in | 381 cm |
| 200 in | 508 cm |
| 250 in | 635 cm |
| 500 in | 1,270 cm |
| 1000 in | 2,540 cm |
Most-searched in to cm answers
16 in to cm
40.64 cm10 in to cm
25.4 cm15 in to cm
38.1 cm14 in to cm
35.56 cm6 in to cm
15.24 cm12 in to cm
30.48 cm4 in to cm
10.16 cm28 in to cm
71.12 cm85 in to cm
215.9 cm11 in to cm
27.94 cm17 in to cm
43.18 cm55 in to cm
139.7 cmWhen to convert in to cm
Use inches to centimeters for screen sizes, furniture, clothing, height and DIY measurements.
- ▸Check whether an inch-sized product fits a metric space.
- ▸Convert US height or clothing measurements for a metric chart.
Common mistakes
- ✕One inch equals exactly 2.54 centimeters, so multiply inches by 2.54.
- ✕Mixing US and international inches — since 1959 all inches are 25.4 mm exactly; older US "survey foot" values are slightly different.
- ✕Off-by-decimal errors: 1 cm = 10 mm, 1 m = 100 cm — a misplaced decimal turns a in into a wildly wrong cm.
- ✕Confusing feet with yards (1 yd = 3 ft) in DIY calculations.
- ✕The US survey foot is not the international foot. The US survey foot was 1200/3937 m (about 0.30480061 m) — roughly 2 parts per million longer than the international foot of 0.3048 m. NIST retired it for new work at the end of 2022, but old survey and land records still use it. Over a mile the difference is about 3 mm; over 100 km it is about 200 mm, which matters in surveying and geodesy and nowhere else.
Regional usage & source
Metric units (mm, cm, m, km) are used in most of the world. Imperial units (in, ft, yd, mi) are standard in the US and still common in the UK for road distances and human height.
Reference: Conversion factors are defined by the International System of Units (SI) as maintained by the BIPM (bipm.org) and NIST (nist.gov). 1 inch = exactly 0.0254 meters (international yard and pound agreement, 1959).
How these numbers are produced and rounded: methodology.