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How many cm in an inch?

1 inch equals exactly 2.54 centimeters. This is the international standard conversion factor used worldwide in engineering, manufacturing, and design applications.

Formula: cm = inches × 2.54

Quick Examples:

Inches to CM Converter

Convert inches to centimeters with professional 15-decimal precision. Essential tool for design, manufacturing, engineering, and international measurements.

Professional Inches to CM Calculator

Precise length conversions for design, manufacturing, and engineering

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Conversion Formula: cm = inches × 2.54

Quick Inches to CM Conversion Table

Inches Centimeters Common Use
1 in 2.54 cm Standard conversion
6 in 15.24 cm Ruler length
12 in 30.48 cm 1 foot
24 in 60.96 cm 2 feet
36 in 91.44 cm 1 yard
72 in 182.88 cm 6 feet (person height)

Professional Applications

🎨 Design & Graphics

Print design, web graphics, and digital media require precise inch to cm conversions for international projects and specifications.

🏭 Manufacturing

Precision manufacturing, machining, and quality control require exact inch to cm conversions for international standards compliance.

📐 Engineering

Technical drawings, CAD designs, and engineering specifications often require conversion between imperial and metric measurements.

Frequently Asked Questions

How many cm in an inch?
1 inch equals exactly 2.54 centimeters. This is the international standard conversion factor used worldwide in engineering, manufacturing, and design applications. The conversion is based on the international yard and pound agreement of 1959.
How do you convert inches to cm?
To convert inches to cm, multiply the inch value by 2.54. For example, 5 inches equals 12.7 cm. The formula is: cm = inches × 2.54. This conversion factor is exact and used internationally.
What is 12 inches in cm?
12 inches equals 30.48 centimeters. This is exactly one foot converted to the metric system, commonly used in international measurements and technical specifications.
Why is precise inch to cm conversion important?
Precise inch to cm conversion is crucial in manufacturing, design, and engineering where small measurement errors can lead to significant problems. International projects require exact conversions to ensure compatibility and compliance with standards.

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