What is Measured in Centimeters?
Quick answer: Things measured in centimetres are usually small to medium objects: clothing, paper, books, furniture, plants, and body measurements. Centimetres are chosen when millimetres would be too fiddly and metres would be too large a unit.
Exact Conversion
There is no single formula here, because the unit is the same whatever you measure. The conversion rules still help: divide centimetres by 2.54 to get inches, multiply by 10 to get millimetres, and divide by 100 to get metres. Try the cm to inches converter for any specific size you need to change.
| Unit | Value |
|---|---|
| Small objects | Buttons, coins, and jewellery, in centimetres and millimetres |
| Paper and books | Height and width, in centimetres |
| Clothing | Chest, waist, sleeve, and inseam, in centimetres |
| Furniture | Length, width, and height, in centimetres |
| People | Height in centimetres, and sometimes in metres and centimetres together |
Real-Life Examples
The clearest way to see the range is to walk through a home: a button is about 1 cm, a book is about 20 cm tall, a chair seat is about 45 cm high, and a table is about 75 cm high. All of these are naturally described in centimetres.
- A shirt sleeve, measured from shoulder to cuff.
- A sheet of paper, measured by height and width.
- A bookshelf, measured by width and height.
- A plant, measured from soil to the tallest leaf.
- A television screen, often described in inches in some countries and in centimetres in others, with the screen measured diagonally.
How to Measure It
Measure with a metric tape or ruler, keeping the tape straight and level. For clothing, measure over light clothing and keep the tape snug but not tight. For furniture, measure the widest and tallest points, including any handles or legs that stick out, and write down all three dimensions: length, width, and height.
Common Uses: Where You See This Size
Centimetres are the standard unit for clothing sizes in most countries, for paper sizes, for furniture dimensions in shops and assembly guides, and for medical measurements such as height and the size of a cut or rash. They are also used for rainfall, snow depth, and plant growth, where a millimetre would be too small and a metre would hide the change.
Common Mistakes to Avoid
The most common mistake is writing a number without its unit, so that 20 could mean 20 cm, 20 mm, or 20 inches. Another is measuring a curved or soft object, like a waist, with a rigid ruler instead of a flexible tape, which gives a shorter reading. A third is mixing units in one set of measurements, for example giving a table height in centimetres and its width in inches, which makes the numbers hard to compare.
Putting It in Context
It helps to place this size on a ruler you already know. A standard metric ruler is 30 cm long, so this measurement is only a small part of that ruler, and it is easy to lose track of it if you start counting from the wrong end. Always start from zero, keep the ruler still, and read the number twice. That habit matters more than any single conversion, because most measurement errors come from reading the ruler wrong, not from the maths. Once the reading is right, the conversion is simple arithmetic.
Frequently Asked Questions
Are clothes measured in centimetres?
In most countries, yes. Chest, waist, sleeve length, and inseam are usually given in centimetres.
Is paper measured in centimetres?
Yes. Paper sizes are usually given in millimetres or centimetres, for example A4 paper is 21 cm by 29.7 cm.
Why not use metres for furniture?
Because furniture is usually under two metres, so centimetres give whole numbers that are easier to read and compare.
How do I convert a centimetre measurement to inches?
Divide by 2.54. For example, 50 cm is 19.685 inches.
What is measured in millimetres instead?
Very small things, like the thickness of paper, the diameter of screws, and the size of small electronic parts, are usually given in millimetres. See the guide to what is measured in millimetres.