Centimetres to Inches
Centimetres to Inches (cm to in) Converter
1 centimetre = 0.3937 inches
Default is 5 significant figures. “Search units as” decides what words like gallon, pint or cup mean when you type them. Shortcuts: Alt+S swap · Alt+C copy · Alt+L link · / search
- 1 cm = 0.3937 in
- 5 cm = 1.9685 in
- 10 cm = 3.937 in
- 25 cm = 9.8425 in
- Metresm
- Kilometreskm
- Centimetrescm
- Millimetresmm
- Micrometresµm
- Nanometresnm
- Inchesin
- Feetft
- Yardsyd
- Milesmi
- Nautical milesnmi
- Milsmil
- US survey feetft (US survey)
- Astronomical unitsau
- Light-yearsly
- ÅngströmsÅ
- Metres0.01m
- Kilometres0.00001km
- Centimetres1cm
- Millimetres10mm
- Micrometres10,000µm
- Nanometres10,000,000nm
- Inches0.3937in
- Feet0.032808ft
- Yards0.010936yd
- Miles0.0000062137mi
- Nautical miles0.0000053996nmi
- Mils393.7mil
- US survey feet0.032808ft (US survey)
- Astronomical unitsau
- Light-yearsly
- Ångströms100,000,000Å
Quick examples
1 centimetre = 0.3937 inches · 1 in = 2.54 cm
- 1 centimetre = 0.3937 inches
- 5 centimetres = 1.9685 inches
- 10 centimetres = 3.937 inches
- 25 centimetres = 9.8425 inches
- 100 centimetres = 39.37 inches
How it’s calculated
in = cm ÷ 2.54
- Divide the value in centimetres by 2.54.
- Equivalently, multiply by 0.3937007874.
- 1 cm = 0.3937007874 in · 1 in = 2.54 cm
About these units
Centimetre (cm)
SI (metric)
1 cm = 0.01 m (exact)
Defined as exactly 1/100 of a metre.
Source: BIPM SI Brochure (9th ed.)
Inch (in)
US & imperial (identical)
1 in = 0.0254 m (exact)
The international inch, defined as exactly 2.54 cm since 1959.
Source: NIST SP 811 / Handbook 44
Centimetres to inches conversion table
| Centimetres (cm) | Inches (in) |
|---|---|
| 0.1 cm | 0.03937 in |
| 0.5 cm | 0.19685 in |
| 1 cm | 0.3937 in |
| 2 cm | 0.7874 in |
| 3 cm | 1.1811 in |
| 4 cm | 1.5748 in |
| 5 cm | 1.9685 in |
| 6 cm | 2.3622 in |
| 7 cm | 2.7559 in |
| 8 cm | 3.1496 in |
| 9 cm | 3.5433 in |
| 10 cm | 3.937 in |
| 15 cm | 5.9055 in |
| 20 cm | 7.874 in |
| 25 cm | 9.8425 in |
| 30 cm | 11.811 in |
| 40 cm | 15.748 in |
| 50 cm | 19.685 in |
| 75 cm | 29.528 in |
| 100 cm | 39.37 in |
| 250 cm | 98.425 in |
| 500 cm | 196.85 in |
| 1,000 cm | 393.7 in |
Related conversions
Frequently asked questions
How do I convert centimetres to inches?
Use in = cm ÷ 2.54. Divide the value in centimetres by 2.54.
How many inches are in 1 centimetre?
1 centimetre (cm) equals 0.3937 inches (in); more precisely 0.3937007874.
How many centimetres are in 1 inch?
1 inch (in) equals 2.54 centimetres (cm).
What is 10 cm in in?
10 centimetres = 3.937 inches.
What is a centimetre?
Defined as exactly 1/100 of a metre.
What is a inch?
The international inch, defined as exactly 2.54 cm since 1959.
Formula: in = cm ÷ 2.54. Factors last reviewed 2026-10-27.