1 cm to Inches
1 cm ≈ 0.3937 in
1 centimeter is approximately 0.3937 inches.
How to convert 1 cm to in
Use the formula in = cm ÷ 2.54:
in = 1 ÷ 2.54in = 0.393701
So 1 cm = 0.393701 in, or about 0.3937 in rounded.
Rounded values and quick estimate
- Rounded to a whole number: 0 in
- Rounded to one decimal place: 0.4 in
- Conversion factor: 1 centimeter = 0.3937 inches
Quick mental estimate: multiply by 0.4. For 1 cm that gives about 0.4 in — off by 0.006299 in (1.6%). Use the exact formula when precision matters.
1 cm in other units
- Inches
- 0.3937 in
- Millimeters
- 10 mm
- Meters
- 0.01 m
- Kilometers
- 0.00001 km
- Feet
- 0.0328 ft
- Yards
- 0.0109 yd
- Miles
- 0.000006 mi
- Micrometers
- 10000 µm
- Hands
- 0.0984 hh
- Nautical miles
- 0.000005 nmi
- Mils (thou)
- 393.7 mil
1 cm and nearby values
About centimeters and inches
A centimeter is one hundredth of a meter. It is the everyday metric unit for body height, clothing and short lengths.
An inch is defined as exactly 2.54 centimeters. There are 12 inches in a foot; inches are used in the US for screens, heights and small lengths.
Related conversions
Frequently asked questions
What is 1 cm in Inches?
1 centimeter is about 0.3937 inches (1 cm ≈ 0.3937 in).
How do you convert 1 cm to in?
Apply in = cm ÷ 2.54: in = 1 ÷ 2.54, in = 0.393701.
How many centimeters is 0.3937 in?
0.3937 in is about 1 centimeters.