Length Converter
Convert length and distance measurements instantly between meters, kilometers, centimeters, millimeters, feet, inches, yards, miles, nautical miles and many other units.
Popular Length Conversions
Length Converter and Length Conversion Calculator
The Smart Unit Calc Length Converter is a free online length conversion calculator that makes it easy to convert measurements between different metric, imperial, US customary, nautical and scientific length units. Enter a value, select the original unit and choose the unit you want to convert to. The calculator instantly provides an accurate result.
Length conversion is commonly required in construction, engineering, education, science, transportation, logistics, manufacturing, architecture, travel and everyday calculations. This online length converter eliminates the need for manual conversion formulas and allows you to quickly convert meters to feet, feet to meters, inches to centimeters, centimeters to inches, kilometers to miles, miles to kilometers and many other combinations.
What Is Length?
Length is a physical quantity used to describe the distance between two points. The meter (m) is the SI base unit of length in the International System of Units. Other common units include kilometers, centimeters, millimeters, inches, feet, yards and miles.
Different countries and industries use different measurement systems. The metric system is widely used internationally, while feet, inches, yards and miles are commonly used in the United States and some other regions. A reliable length converter helps convert between these systems quickly and accurately.
Length Units Supported by Smart Unit Calc
Our length conversion calculator supports a broad range of common, engineering, scientific and traditional length units.
- Kilometer (km)
- Meter (m)
- Decimeter (dm)
- Centimeter (cm)
- Millimeter (mm)
- Micrometer (µm)
- Nanometer (nm)
- Picometer (pm)
- Angstrom (Å)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical Mile (nmi)
- Fathom
- Chain
- Furlong
- Rod
- Link
- Mil
- Light Year (ly)
- Astronomical Unit (AU)
- Parsec (pc)
- Kiloparsec (kpc)
- Megaparsec (Mpc)
- Point (pt)
- Pica
Common Length Conversion Formulas
Length conversions are performed using fixed conversion factors. Some of the most frequently used length conversions are shown below.
| Conversion | Formula |
|---|---|
| Meters to Feet | Feet = Meters × 3.280839895 |
| Feet to Meters | Meters = Feet × 0.3048 |
| Inches to Centimeters | Centimeters = Inches × 2.54 |
| Centimeters to Inches | Inches = Centimeters ÷ 2.54 |
| Kilometers to Miles | Miles = Kilometers × 0.6213711922 |
| Miles to Kilometers | Kilometers = Miles × 1.609344 |
| Meters to Yards | Yards = Meters × 1.093613298 |
| Yards to Meters | Meters = Yards × 0.9144 |
Metric Length Conversion
Metric length units are based on powers of ten, making conversions between kilometers, meters, centimeters and millimeters particularly simple. One kilometer equals 1,000 meters, one meter equals 100 centimeters and one meter equals 1,000 millimeters.
For example, to convert 5 meters to centimeters, multiply 5 by 100. The result is 500 centimeters. To convert 500 centimeters back to meters, divide by 100 to get 5 meters.
Imperial and US Length Conversion
Imperial and US customary measurements include inches, feet, yards and miles. These units are frequently used for construction, building dimensions, personal height, road distances and other measurements.
There are 12 inches in one foot, 3 feet in one yard and 1,760 yards in one mile. The exact international conversion defines one inch as 0.0254 meters.
How to Convert Length
- Enter the length value you want to convert.
- Select the original measurement unit.
- Select the destination measurement unit.
- The Smart Unit Calc calculator automatically calculates the converted value.
- Use the reverse/swap button to perform the opposite conversion.
Length Conversion Examples
1 Meter to Feet
1 meter is equal to approximately 3.28084 feet.
10 Feet to Meters
10 feet × 0.3048 = 3.048 meters.
100 Centimeters to Inches
100 centimeters ÷ 2.54 = 39.3701 inches.
5 Kilometers to Miles
5 kilometers × 0.621371 = 3.10686 miles.
Length Converter for Construction and Engineering
Length calculations are important in construction, engineering, architecture and manufacturing. Professionals often need to convert between millimeters, centimeters, meters, inches and feet when working with technical drawings, dimensions, building plans and equipment specifications.
Smart Unit Calc provides a convenient way to convert technical dimensions without manually searching for individual conversion factors.
Length Converter for Everyday Use
You can also use this free length calculator for everyday measurements such as height, room dimensions, furniture sizes, distances, travel measurements, clothing measurements and DIY projects.
Frequently Asked Questions About Length Conversion
How many feet are in one meter?
One meter equals exactly 3.280839895 feet.
How many centimeters are in one inch?
One inch equals exactly 2.54 centimeters.
How many meters are in one kilometer?
One kilometer equals 1,000 meters.
How many feet are in one mile?
One international mile equals 5,280 feet.
Can I convert feet to meters?
Yes. Select Feet in the From field and Meters in the To field. The calculator automatically performs the reverse conversion.
Is the Smart Unit Calc length converter free?
Yes. The Smart Unit Calc Length Converter is designed as a free online tool for quick and accurate length conversions.
Why Use Smart Unit Calc?
Smart Unit Calc provides simple, fast and accurate online calculators and unit conversion tools. Our calculators are designed to work directly in your browser without requiring complicated software or manual mathematical calculations.
Whether you need a meter to feet converter, feet to meter calculator, cm to inches converter, inches to cm calculator, km to miles converter, miles to kilometers converter or a general-purpose length conversion calculator, this page provides a convenient solution.