cm to inches converter — centimetres to inches and feet
Turn centimetres into inches — for waist and chest sizes, screen and frame dimensions, and any product listing that gives one unit but not the other.
| Breakdown | Value |
|---|
Estimate. The method and sources are on this page — check them against your own case before you act.
How it is calculated
The inch is defined as exactly 2.54 cm, so converting centimetres to inches is a single division. No lookup table is needed.
inches = centimetres ÷ 2.54 · feet = inches ÷ 12
Divide by 2.54
Every centimetre value becomes inches by dividing by 2.54. 30 cm ÷ 2.54 = 11.81 in; 100 cm ÷ 2.54 = 39.37 in.
Split into feet when it helps
For longer lengths, divide the inches by 12. The whole number is feet and the remainder is inches: 170 cm = 66.93 in = 5 ft 6.9 in.
Round only at the end
Keep the full value while you work and round once. Rounding 2.54 to 2.5 makes 100 cm look like 40 in instead of 39.37 in.
cm to inches chart — 1 to 200 cm
| Centimetres | Inches | Feet + inches | Where you see it |
|---|---|---|---|
| 1 cm | 0.39 | 0 ft 0.4 in | A single centimetre |
| 2 cm | 0.79 | 0 ft 0.8 in | Length |
| 5 cm | 1.97 | 0 ft 2.0 in | Length |
| 10 cm | 3.94 | 0 ft 3.9 in | Length |
| 15 cm | 5.91 | 0 ft 5.9 in | Length |
| 20 cm | 7.87 | 0 ft 7.9 in | Length |
| 25 cm | 9.84 | 0 ft 9.8 in | Length |
| 30 cm | 11.81 | 0 ft 11.8 in | A school ruler |
| 50 cm | 19.69 | 1 ft 7.7 in | Length |
| 75 cm | 29.53 | 2 ft 5.5 in | Length |
| 100 cm | 39.37 | 3 ft 3.4 in | One metre |
| 120 cm | 47.24 | 3 ft 11.2 in | Length |
| 140 cm | 55.12 | 4 ft 7.1 in | Height |
| 150 cm | 59.06 | 4 ft 11.1 in | Height |
| 152 cm | 59.84 | 4 ft 11.8 in | About 5 ft |
| 155 cm | 61.02 | 5 ft 1.0 in | Height |
| 160 cm | 62.99 | 5 ft 3.0 in | Height |
| 165 cm | 64.96 | 5 ft 5.0 in | Height |
| 170 cm | 66.93 | 5 ft 6.9 in | Height |
| 175 cm | 68.90 | 5 ft 8.9 in | Height |
| 180 cm | 70.87 | 5 ft 10.9 in | Height |
| 185 cm | 72.83 | 6 ft 0.8 in | Height |
| 190 cm | 74.80 | 6 ft 2.8 in | Height |
| 200 cm | 78.74 | 6 ft 6.7 in | Two metres |
What most pages get wrong
1 inch is exactly 2.54 cm
The 1959 international agreement fixed the inch at 2.54 cm. Dividing by 2.54 is exact; any decimals you see come from display rounding.
Waist labels round to the nearest inch
A 76 cm waist is 29.92 in and is sold as size 30. Measure yourself in centimetres and convert, rather than trusting a size chart that has already rounded.
One metre is about 39.37 inches
Use this as a sanity check: a metre is a little over three feet three inches. If your answer for 100 cm is not near 39.4, something went wrong.
Going the other way multiplies by 2.54
This page divides by 2.54. The inches to cm page multiplies by 2.54. Mixing the two up is the most common conversion mistake.
Frequently asked questions
How do you convert cm to inches?+
How many inches is 1 cm?+
How do I convert my height in cm to feet and inches?+
Is there a cm to inches chart?+
How many cm is 1 inch?+
Is the conversion different in India?+
Sources, dates and a changelog.
Every number this calculator uses is either an input you control or a value from the sources below. The formula is compiled and tested at build time, so the page cannot ship with a broken calculation.
Sources
This page
- Last verified: 30 October 2026
- Next review: 30 April 2027
- Vertical: Unit Converters
- Build tests: 5 passed
- Changelog: 1 entry
How we handle errors
- Spotted a mistake? Report it — we correct and log it.
- Corrections appear in the changelog below.
- Read the methodology and the disclaimer.