Length Unit Definitions
Our Length Converter helps you easily switch between centimeters, inches, feet, meters, kilometers, and miles. It's perfect for engineers, students, travelers, and professionals who need fast and accurate unit conversions for construction projects, academic work, and everyday measurements.
Meter (m)
The meter is the base unit of length in the International System of Units (SI). It is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. The meter is used worldwide for measuring length and is the foundation for all other metric length units.
Kilometer (km)
A kilometer equals 1,000 meters. It is commonly used for measuring longer distances such as the distance between cities, road lengths, and geographical measurements. One kilometer is approximately 0.621 miles.
Centimeter (cm)
A centimeter is one-hundredth of a meter (0.01 m). It is commonly used for measuring small lengths such as the height of objects, clothing sizes, and everyday measurements. One inch equals 2.54 centimeters.
Millimeter (mm)
A millimeter is one-thousandth of a meter (0.001 m). It is used for very precise measurements in engineering, manufacturing, and scientific applications. One inch equals 25.4 millimeters.
Mile (mi)
A mile is a unit of distance primarily used in the United States and United Kingdom. One mile equals approximately 1,609.344 meters or about 1,760 yards. There are different definitions including statute miles and nautical miles, with statute miles being the most common.
Foot (ft)
A foot is a unit of length equal to 12 inches or 0.3048 meters. It is commonly used in the United States for measuring height, room dimensions, and short distances. Three feet equal one yard.
Inch (in)
An inch is a unit of length equal to exactly 2.54 centimeters or 1/12 of a foot. It is widely used in the United States and United Kingdom for measuring small lengths, screen sizes, and small objects. Twelve inches make up one foot.
Yard (yd)
A yard is a unit of length equal to 3 feet or 0.9144 meters. It is commonly used in the United States and United Kingdom for measuring fabric, sports fields (especially football fields), and medium distances. One yard equals 36 inches.
Light Year
A light-year is the distance that light travels in a vacuum in one Julian year, approximately 9.461 × 10^15 meters or 9.461 trillion kilometers. Despite its name, it measures distance, not time. Light-years are used in astronomy to measure vast distances between stars and galaxies.
Frequently Asked Questions on Length Conversion
Q: How to convert meters to feet?
Multiply the length in meters by 3.28084 to convert to feet. Example: 2 meters = 6.56168 feet.
Q: How many inches are in a centimeter?
1 inch equals 2.54 centimeters. To convert cm to inches, divide by 2.54.
Q: What is the difference between miles and kilometers?
1 mile equals approximately 1.609 kilometers. Miles are used in the imperial system, while kilometers are part of the metric system.
Popular Length Conversions
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Our free online length converter provides instant, accurate results for centimeters to inches, meters to feet, and kilometers to miles and more. Perfect for students, engineers, and travelers needing quick distance conversions.