Length Converters

Convert length and distance between meters, feet, inches, kilometers, miles, yards, and 50+ units. Used worldwide in construction, engineering, navigation, and everyday measurements. See also our CM to Inches, Meters to Feet, and KM to Miles converters.

Length Converters

Value:

ScientificDecimal

Result:10 centimeter (cm)=1.0000decimeter (dm)

What is a Length Converter?

A length converter is a tool that converts measurements between different units of length and distance such as meters, feet, inches, kilometers, and miles. It is essential for international trade, construction, science, and everyday tasks where different measurement systems are used.

How to Convert Length Units

Select the unit you want to convert from and the unit you want to convert to using the dropdown menus. Enter your value in the input field and the converter will instantly calculate the equivalent value in your target unit. You can also use the popular conversion links below for common conversions.

Length Conversion Formulas

1 meter = 3.28084 feet 1 inch = 2.54 centimeters 1 kilometer = 0.621371 miles 1 mile = 1.60934 kilometers 1 yard = 0.9144 meters 1 foot = 12 inches = 30.48 centimeters

History of Length Measurement

Length measurement dates back to ancient civilizations who used body parts like the cubit (forearm length) and foot as units. The metric system was established in France in 1799, defining the meter as one ten-millionth of the distance from the equator to the North Pole. Today, the International System of Units (SI) defines the meter based on the speed of light.

About This Length Converter

This length converter supports over 50 units including meters, kilometers, centimeters, millimeters, miles, yards, feet, inches, nautical miles, light years, and more. It handles both metric (SI) and imperial/US customary units with high precision for scientific, engineering, and everyday use.

Frequently Asked Questions

How many centimeters are in an inch?

There are exactly 2.54 centimeters in one inch. This is a defined relationship — 1 inch is defined as exactly 25.4 millimeters (2.54 cm).

How do I convert kilometers to miles?

Multiply the number of kilometers by 0.621371 to get miles. For example, 10 km = 10 × 0.621371 = 6.21371 miles. Alternatively, divide kilometers by 1.60934.

What is the difference between a mile and a nautical mile?

A statute mile is 5,280 feet (1,609.344 meters). A nautical mile is 6,076 feet (1,852 meters) — about 15% longer. Nautical miles are used in aviation and maritime navigation because they correspond to one minute of latitude.

How many feet are in a meter?

There are approximately 3.28084 feet in one meter. Conversely, one foot equals 0.3048 meters exactly.

What is the smallest unit of length?

The Planck length (approximately 1.616 × 10⁻³⁵ meters) is the smallest meaningful unit of length in physics. In practical use, the femtometer (10⁻¹⁵ meters) is used to measure atomic nuclei.

Metric Conversion Factor Tables for Length Converter

Units to convert	Multiply By The Number	Convert as Unit
CentiMeters (cm)	0.03281	Feet (ft)
CentiMeters (cm)	0.3937007874	Inches (in)
Cubic Meters	35.3145	Cubic Feet (ft)
KiloMeters (Km)	0.62	Miles (mi)
Meters (m)	3.2808	Feet (ft)
Meters (m)	39.37007874	Inches (in)
Meters (m)	0.0006214	Miles (mi)
Meters (m)	1.0936	Yards (yd)
MilliMeters (mm)	0.03937007874	Inches (in)
Feet (ft)	0.3048	Meters (m)
Inches (in)	2.54	CentiMeters (cm)
Inches (in)	25.4	MilliMeters (mm)
Miles (mi)	1.609347	KiloMeters (Km)
Yards (yd)	0.9144	Meters (m)