cm to m Calculator
A tape measure reads 175 centimetres, the form asks for metres, and the answer is just a decimal point sliding two places.
Quick answer: divide the centimetres by 100. So 100 cm is 1 m, 175 cm is 1.75 m, 250 cm is 2.5 m and 90 cm is 0.9 m.
The centimeters to meters formula
A centimetre is exactly one hundredth of a metre, so converting centimetres to metres means dividing by 100.
Dividing by 100 is the same as multiplying by 0.01 and moves the decimal point two places to the left.
Because the factor is a power of ten, the result is exact.
For example, 342 cm is 3.42 m and 7 cm is 0.07 m.
Centimetres, metres and the SI prefix centi
The centimetre (cm) is one hundredth of a metre, using the SI prefix centi, which stands for 10 to the power minus 2 (NIST: Metric SI prefixes). The metre (m) is the SI base unit of length (NIST: SI units, length).
About 39.37 inches fit into a metre, while a centimetre is about 0.39 inches (Inch Calculator).
Using metres for longer lengths keeps numbers short, which is why rooms, heights and distances are commonly quoted in metres.
How to convert cm to m step by step
- Write down the length in centimetres.
- Divide it by 100, or move the decimal point two places to the left.
- Add leading zeros if needed.
- Add the unit m to the answer.
Example 1: a person height
- Start with 175 cm.
- 175 × 0.01 = 1.75.
- Round to 1.75.
175 cm = 1.75 m
Example 2: a doorway
- Start with 90 cm.
- 90 × 0.01 = 0.9.
- Round to 0.9.
90 cm = 0.9 m
Example 3: a wall
- Start with 250 cm.
- 250 × 0.01 = 2.5.
- Round to 2.5.
250 cm = 2.5 m
A 175 cm height becomes 1.75 m, which can also be written as 1 m 75 cm.
cm to m conversion table
| Centimetres (cm) | Metres (m) |
|---|---|
| 1 cm | 0.01 m |
| 5 cm | 0.05 m |
| 10 cm | 0.1 m |
| 25 cm | 0.25 m |
| 50 cm | 0.5 m |
| 75 cm | 0.75 m |
| 90 cm | 0.9 m |
| 100 cm | 1 m |
| 120 cm | 1.2 m |
| 150 cm | 1.5 m |
| 175 cm | 1.75 m |
| 180 cm | 1.8 m |
| 200 cm | 2 m |
| 250 cm | 2.5 m |
| 300 cm | 3 m |
| 500 cm | 5 m |
| 1,000 cm | 10 m |
The highlighted row is the definition: 100 cm is exactly 1 m.
A quick mental shortcut for centimetres to metres
Slide the decimal point two places to the left. For 235 cm the point moves in front of the 3 and 5, giving 2.35 m.
For a number under 100, add a leading zero: 7 cm is 0.07 m and 45 cm is 0.45 m.
Centimeters to meters and centimeters: splitting a length
If you want a length in the form metres and centimetres, take the whole hundreds as metres and the remainder as centimetres. For 342 cm, that is 3 m 42 cm.
This split is common for heights, curtain drops and fabric lengths.
Cm to m in measuring, building and school work
Builders and decorators read tape measures in centimetres but write plans in metres. A 250 cm ceiling is 2.5 m, and a 90 cm door is 0.9 m wide.
Students convert centimetres to metres in physics and geometry, where SI units are expected in answers.
More values at a glance
0.5 centimetres is 0.005 metres. 2 centimetres is 0.02 metres. 5 centimetres is 0.05 metres.
10 centimetres is 0.1 metres. 25 centimetres is 0.25 metres. 100 centimetres is 1 metres.
Each answer is the input times 0.01. You can use the same factor for any value that is not listed here.
The unit sizes
One of the centimetres equals 0.01 metres. One of the metres equals 100 centimetres.
If a result looks very large or very small, compare it with these sizes before you use it.
Checking in reverse
Take 0.1 metres and divide by 0.01. You get back 10 centimetres. If you do not, one of the numbers was typed or rounded wrongly.
Height example
A person who is 175 cm tall is 1.75 m tall. A room of 320 cm is 3.2 m. Move the decimal point two places to the left to go from cm to m.
Quick conversion answers
| Conversion | Result |
|---|---|
| How many meters in a centimeter? | 0.01 m |
| 50 cm to m | 0.5 m |
| 90 cm to m | 0.9 m |
| 100 cm to m | 1 m |
| 150 cm to m | 1.5 m |
| 175 cm to m | 1.75 m |
| 250 cm to m | 2.5 m |
| 1,000 cm to m | 10 m |
Where this conversion is used
Builders, decorators and shoppers convert centimetres to metres to write plans and order materials.
Doctors, teachers and coaches record heights in metres from centimetre measurements.
Students use it to express physics and maths answers in SI units.
Common mistakes to avoid
- Multiplying by 100. That converts metres to centimetres.
- Moving the decimal point the wrong way. For cm to m, it moves left.
- Mixing mm and cm. There are 1,000 mm in a metre.
- Losing leading zeros. 7 cm is 0.07 m, not 0.7 m.
Related converters
- Meters to centimeters
- Centimeters to feet
- Millimeters to centimeters
- Centimeters to inches
- m to Nanometers
Rounding and precision when converting cm to m
Because the factor is exact, you only choose how many decimals to keep. Two decimals give you the nearest centimetre, so 1.754 m is normally written 1.75 m.
For building and carpentry, keep the full figure, since a 3 mm difference can stop a shelf fitting. For heights and everyday sizes, two decimals are plenty.
Frequently asked questions
How do I convert centimeters to meters?
Divide the centimetres by 100.
How many meters are in a centimeter?
One centimetre is 0.01 m.
How many meters is 175 cm?
175 cm equals 1.75 m.
How many meters is 250 cm?
250 cm equals 2.5 m.
How big is a centimeter in inches?
One centimetre is about 0.39 in.
What does the prefix centi mean?
Centi means one hundredth, so a centimetre is a hundredth of a metre.
Sources
- NIST: Metric SI prefixes (nist.gov)
- NIST: SI units, length (nist.gov)
- Inch Calculator: Meters to centimeters (inchcalculator.com)
