Imperial to Metric Converter: Inches to Centimetres

Convert inches to centimetres instantly with our free online tool. Ideal for Canadians measuring for snow tires, furniture, or DIY projects.

Canadian Metric & Imperial Length Converter
in

Inches

cm

Centimeters

in to cm Conversion Formula

To convert inches to centimetres, multiply the inch value by 2.54. Since 1959, one inch has been internationally defined as exactly 2.54 centimetres.

1 in = 2.54 cm

Inches to Centimetres Conversion Table

Inches (in) Centimeters (cm)

How to Use

  1. 1

    Enter Your Inch Value

    Type the measurement in inches — for example, enter 15.6 for a 15.6-inch laptop screen

  2. 2

    See the cm Equivalent

    The result appears instantly: 15.6 in = 39.624 cm — the diagonal screen measurement in metric

  3. 3

    Copy or Reverse

    Copy the result to your clipboard or click Swap to convert centimetres back to inches

  4. 4

    Use the Reference Table

    Check the table for common values like 12 in = 30.48 cm or 24 in = 60.96 cm

Why Use Be Converter?

Instant Conversion

Get precise inch to centimetre results in real-time as you type — no waiting for page reloads

International Standard Accuracy

Uses the exact factor of 2.54 cm per inch, the international standard agreed upon in 1959

Handy Conversion Table

Common inch measurements at a glance — from 1/4 inch to 36 inches — for quick reference

Swap with One Click

Toggle between inches and centimetres instantly — essential when working with mixed-unit specifications

Free & No Signup

No registration, no limits. Convert as many measurements as you need for work or personal projects

Fully Private

All calculations happen locally in your browser. No data is ever sent to any server

Frequently Asked Questions

How many centimetres are in 1 inch?
1 inch equals exactly 2.54 centimetres. This is not an approximation — it has been the exact legal definition since the international yard and pound agreement of 1959.
How do I convert inches to cm manually?
Multiply the inch value by 2.54. For example, an 8-inch tablet screen is 8 × 2.54 = 20.32 cm. For fractions: 1/4 inch = 0.635 cm, 1/2 inch = 1.27 cm, 3/4 inch = 1.905 cm.
What is 6 inches in centimetres?
6 inches equals 15.24 centimetres. This is a common measurement — a standard Canadian banknote is about 6 inches (15.2 cm) long, and many smartphone screens are around 6 inches diagonally.
Why is the inch defined as 2.54 cm exactly?
Before 1959, the US inch and the British inch differed slightly. The 1959 international agreement standardized the inch as exactly 2.54 cm to eliminate confusion in science, engineering, and trade between nations like Canada and the US.
How do I convert fractional inches to centimetres?
First convert the fraction to a decimal, then multiply by 2.54. For example, 3-5/8 inches: 5/8 = 0.625, so 3.625 × 2.54 = 9.2075 cm. Common fractions: 1/4" = 0.635 cm, 1/2" = 1.27 cm, 3/4" = 1.905 cm.

About Inches to Centimetres Converter

Our free online inches to centimetres converter provides instant, accurate length conversions for any application. Whether you are ordering cross-border building supplies, finding the right tire size for a Canadian winter, measuring a room for flooring in square metres, or adjusting a recipe from an American cookbook, this tool handles the conversion. Canada officially uses the metric system, but imperial units are common in daily life, making this tool essential for accuracy.

Expert Tips for in to cm Conversion

1

Canada officially adopted the metric system in the 1970s, but you'll still see inches used for construction materials, screen sizes, and tire rim diameters.

2

For quick mental math, multiply inches by 2.5. For example, 4 inches ≈ 10 cm. It's close enough for estimating furniture fit in a Toronto condo.

3

Electronics and screens are always measured diagonally in inches, even in Canada. A 27-inch monitor has a 68.58 cm diagonal.

4

For Canadian tire sizing, the rim diameter is in inches. A 16-inch steel rim (common for winter tires) equals 40.64 cm.

5

Construction lumber in Canada is still sold in imperial nominal sizes. A 2×4 is actually 1.5 × 3.5 inches, which is 38 × 89 mm in metric.