Inches to cm Converter
MiniWebtool’s Inches to cm Converter multiplies inch measurements by 2.54 to obtain centimeters. Fractional inputs, a visual scale, and related metric units make it useful for comparing measurements written in different systems.
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Enter whole inches and a Fraction, or Decimal inches, choose the Decimal Places and press Convert to Centimeters to get cm, mm and m.
About Inches to cm Converter
Welcome to the Inches to cm Converter, a comprehensive free online tool that converts inches to centimeters with precision and clarity. Whether you are working on DIY projects, shopping for electronics, measuring body dimensions, or converting between imperial and metric systems, this calculator provides instant, accurate results with visual representations.
At a Glance
Inches to cm Converter multiplies inch measurements by 2.54 to give centimeters, millimeters and meters. It accepts whole numbers with fractions from 1/16 to 15/16 and shows a visual ruler.
| Feature | What you get | Good for |
|---|---|---|
| Exact factor | 1 inch equals exactly 2.54 cm, a standard set in 1959. Results appear in centimeters, millimeters and meters together. | Converting between imperial and metric measurements |
| Fractional inches | Enter a whole number plus a fraction from 1/16 to 15/16, or type a decimal value directly. | Woodworking and construction measurements such as 5 1/2 inches |
| Precision | Choose 2 to 6 decimal places in the result. | Rounding to the detail your project needs |
| Visual ruler | For measurements up to 12 inches, an interactive ruler shows the length on both scales. | Getting a feel for how inches and centimeters line up |
| Quick buttons | Buttons load common sizes for TVs, monitors and other standard measurements. | Checking screen sizes before buying |
| Reference tables | Tables for fractional inches, screen sizes from 21.5 to 75 inches, US paper sizes, and 1 to 72 inches. | Looking up a common size without typing it in |
How Many Centimeters Are in an Inch?
There are exactly 2.54 centimeters in one inch. This is the internationally recognized standard conversion factor, officially defined since 1959. The inch is part of the imperial measurement system used primarily in the United States, while the centimeter belongs to the metric system used by most other countries worldwide.
Inches to Centimeters Conversion Formula
To convert any measurement from inches to centimeters, simply multiply the inch value by 2.54:
For example:
- 5 inches = 5 × 2.54 = 12.7 cm
- 10 inches = 10 × 2.54 = 25.4 cm
- 12 inches (1 foot) = 12 × 2.54 = 30.48 cm
Converting Fractional Inches
Working with fractional inches is common in woodworking, construction, and many other fields. To convert fractional inches to centimeters:
Step-by-Step Process
- Convert the fraction to decimal: Divide the numerator by the denominator
- Add to the whole number (if any)
- Multiply by 2.54 to get centimeters
Common Fractional Inch Conversions
| Fraction | Decimal | Centimeters | Millimeters |
|---|---|---|---|
| 1/16" | 0.0625 | 0.159 cm | 1.59 mm |
| 1/8" | 0.125 | 0.318 cm | 3.18 mm |
| 1/4" | 0.25 | 0.635 cm | 6.35 mm |
| 3/8" | 0.375 | 0.953 cm | 9.53 mm |
| 1/2" | 0.5 | 1.270 cm | 12.70 mm |
| 5/8" | 0.625 | 1.588 cm | 15.88 mm |
| 3/4" | 0.75 | 1.905 cm | 19.05 mm |
| 7/8" | 0.875 | 2.223 cm | 22.23 mm |
| 1" | 1.0 | 2.540 cm | 25.40 mm |
How to Use This Calculator
- Enter your measurement: Use either the whole number + fraction inputs for measurements like "5 1/2 inches", or enter the decimal value directly (5.5)
- Try quick buttons: Use the quick conversion buttons for common sizes like TV screens, monitors, or standard measurements
- Select precision: Choose how many decimal places you want in your result (2-6 decimal places)
- Click Convert: View your results showing centimeters, millimeters, and meters
- Visual scale: For measurements up to 12 inches, see the interactive ruler diagram showing your measurement on both scales
Common Screen Size Conversions
TV and monitor sizes are always measured diagonally across the screen. Here are common screen sizes in both inches and centimeters:
| Screen Size | Inches | Centimeters |
|---|---|---|
| Small monitor | 21.5" | 54.61 cm |
| Standard monitor | 24" | 60.96 cm |
| Large monitor | 27" | 68.58 cm |
| Small TV | 32" | 81.28 cm |
| Medium TV | 43" | 109.22 cm |
| Large TV | 55" | 139.70 cm |
| Extra Large TV | 65" | 165.10 cm |
| Home Theater | 75" | 190.50 cm |
Paper Size Conversions
Paper dimensions vary between the imperial system (US/Canada) and the metric A-series used internationally:
| Paper Size | Width (in) | Height (in) | Width (cm) | Height (cm) |
|---|---|---|---|---|
| US Letter | 8.5" | 11" | 21.59 cm | 27.94 cm |
| US Legal | 8.5" | 14" | 21.59 cm | 35.56 cm |
| US Tabloid | 11" | 17" | 27.94 cm | 43.18 cm |
Why Use This Inches to cm Converter?
- Fractional inch support: Easily convert measurements like 3 1/2" or 5 7/8" without manual calculations
- Multiple output units: Get results in centimeters, millimeters, and meters simultaneously
- Visual ruler diagram: See your measurement displayed on an interactive scale for better understanding
- Real-world comparisons: Understand the size by comparing it to everyday objects
- Adjustable precision: Choose from 2 to 6 decimal places based on your needs
- Quick conversion buttons: Instantly convert common sizes for TVs, monitors, and standard measurements
- Mobile-friendly: Works perfectly on smartphones, tablets, and desktop computers
Understanding Inches and Centimeters
The Inch
The inch (symbol: in or ") is a unit of length in the imperial and United States customary systems of measurement. It is defined as exactly 25.4 millimeters. The inch is commonly used in the United States, Canada, and the United Kingdom for everyday measurements, particularly for:
- Screen sizes (TVs, monitors, phones, tablets)
- Paper dimensions in North America
- Construction and woodworking materials
- Body measurements (height, waist, etc.)
- Tire sizes and wheel diameters
The Centimeter
The centimeter (symbol: cm) is a unit of length in the metric system, equal to one hundredth of a meter (0.01 m). The metric system is used as the standard measurement system in most countries worldwide. Centimeters are commonly used for:
- Body measurements internationally
- Clothing sizes in metric countries
- Scientific measurements
- International product dimensions
- Medical and healthcare measurements
Frequently Asked Questions
How many centimeters are in an inch?
There are exactly 2.54 centimeters in one inch. This is the international standard conversion factor, defined since 1959. To convert inches to centimeters, multiply the inch value by 2.54.
How do I convert fractional inches to centimeters?
First convert the fraction to a decimal, then multiply by 2.54. For example, 3 1/2 inches = 3.5 inches = 3.5 × 2.54 = 8.89 cm. Common fractions: 1/4 inch = 0.635 cm, 1/2 inch = 1.27 cm, 3/4 inch = 1.905 cm.
What is the formula to convert inches to cm?
The formula is: centimeters = inches × 2.54. This formula works for any inch value, whether whole numbers, decimals, or fractions. For reverse conversion (cm to inches), divide the centimeter value by 2.54.
How many cm is a 55 inch TV?
A 55-inch TV has a diagonal screen measurement of 139.7 centimeters (55 × 2.54 = 139.7 cm). Note that the 55 inches refers to the diagonal measurement of the screen, not the width or height.
What is 6 feet in centimeters?
6 feet equals 182.88 centimeters. Since 1 foot = 12 inches, 6 feet = 72 inches. Then, 72 inches × 2.54 = 182.88 cm. This is a common height measurement used for people.
Why is the conversion factor exactly 2.54?
In 1959, the international yard and pound agreement defined the inch as exactly 25.4 millimeters (or 2.54 cm). This standardized the relationship between imperial and metric units across all participating countries.
Quick Reference Table: Inches to Centimeters
| Inches | Centimeters | Inches | Centimeters |
|---|---|---|---|
| 1 | 2.54 | 13 | 33.02 |
| 2 | 5.08 | 14 | 35.56 |
| 3 | 7.62 | 15 | 38.10 |
| 4 | 10.16 | 16 | 40.64 |
| 5 | 12.70 | 17 | 43.18 |
| 6 | 15.24 | 18 | 45.72 |
| 7 | 17.78 | 19 | 48.26 |
| 8 | 20.32 | 20 | 50.80 |
| 9 | 22.86 | 24 | 60.96 |
| 10 | 25.40 | 36 | 91.44 |
| 11 | 27.94 | 48 | 121.92 |
| 12 | 30.48 | 72 | 182.88 |
Related Conversions
You may also find these related length conversions helpful:
- Feet to Centimeters: Multiply feet by 30.48 (since 1 foot = 12 inches = 30.48 cm)
- Yards to Centimeters: Multiply yards by 91.44 (since 1 yard = 3 feet = 91.44 cm)
- Centimeters to Inches: Divide centimeters by 2.54
- Millimeters to Inches: Divide millimeters by 25.4
Reference this content, page, or tool as:
"Inches to cm Converter" at https://MiniWebtool.com/inches-to-cm-converter/ from MiniWebtool, https://MiniWebtool.com/
by miniwebtool team. Updated: Jan 10, 2026
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