Convert Centimeters to Inches
This cm to inches conversion helps when you see sizes written in centimeters but you need inches.
It is useful for clothes, screens, DIY projects, and measuring things at home or school.
Quick Answer
1 centimeter = 0.3937007874 inches
Example: 10 cm = 3.9370 in
Example: 25 cm = 9.8425 in
Conversion Formula
inches = centimeters × 0.3937007874
This means you multiply the number of centimeters by 0.3937007874 to get the same length in inches.
- Write down the length in centimeters.
- Multiply it by 0.3937007874.
- Round the result if you need fewer decimals.
What Is Centimeter
A centimeter is a metric unit of length, equal to one hundredth of a meter.
It is commonly used for short, everyday measurements.
- Measuring a pencil, book, or phone
- Clothing sizes and body measurements
- School science and math work
- Furniture and home measuring
- Small DIY and craft projects
What Is Inches?
An inch is a unit of length used in the US and a few other places.
It is part of the imperial and US customary measurement systems.
- Measuring TV and phone screen sizes
- DIY, woodworking, and tools
- Height and body measurements in the US
- Paper sizes and printing
- Product dimensions in US stores
Real Life Examples
Here are some practical centimeter measurements converted into inches.
- A phone that is 15 cm tall is about 5.91 inches tall.
- A 30 cm ruler is about 11.81 inches long.
- A laptop screen listed as 35.6 cm is about 14.02 inches.
- A waist measurement of 80 cm is about 31.50 inches.
- A shelf depth of 25 cm is about 9.84 inches.
- A picture frame width of 40 cm is about 15.75 inches.
- A bike handlebar width of 60 cm is about 23.62 inches.
Quick Tips
- Fast estimate: inches are a bit less than half of centimeters.
- Good mental shortcut: divide cm by 2.54 to get inches.
- For rough math, use 1 cm ≈ 0.4 in (slightly overestimates).
- For better accuracy, keep 2 to 4 decimal places, then round at the end.
- When measuring real objects, small rounding differences usually do not matter.
- If you need precision for cutting or printing, avoid rounding until the final step.