All Length Equivalents
Length Conversion Table
| m | km | cm | mm | μm | in |
|---|---|---|---|---|---|
| 1 | 0.001 | 100 | 1,000 | 1,000,000 | 39.37 |
| 5 | 0.005 | 500 | 5,000 | 5,000,000 | 196.85 |
| 10 | 0.01 | 1,000 | 10,000 | 10,000,000 | 393.7 |
| 25 | 0.025 | 2,500 | 25,000 | 25,000,000 | 984.25 |
| 50 | 0.05 | 5,000 | 50,000 | 50,000,000 | 1,968.5 |
| 100 | 0.1 | 10,000 | 100,000 | 100,000,000 | 3,937 |
| 250 | 0.25 | 25,000 | 250,000 | 250,000,000 | 9,842.5 |
| 500 | 0.5 | 50,000 | 500,000 | 500,000,000 | 19,685 |
| 1,000 | 1 | 100,000 | 1,000,000 | 1.00000e+9 | 39,370 |
Length Units
SI base unit of length. Defined by the speed of light. International standard for engineering measurements.
Standard metric unit for road distances, pipeline lengths, and large-scale civil engineering projects.
Common metric unit for detail dimensions, material thickness, and laboratory measurements.
Standard precision unit in metric engineering drawings, structural steel, and manufacturing.
Also called micron. Used for surface finish specifications, particle sizes, and precision machining tolerances.
Used in semiconductor fabrication, nanotechnology, and optical wavelength specifications.
Primary US customary unit for detailed dimensions. Exactly 25.4 mm. Standard for pipe sizes, bolt sizes, and drawings.
Primary US customary unit for building dimensions, elevations, and structural spans. Exactly 0.3048 m.
Equal to 3 feet. Used in earthwork quantities (cubic yards) and some construction measurements.
Standard US unit for road distances, pipeline lengths, and transportation engineering. Exactly 5280 feet.
Based on one minute of arc of latitude. Standard in maritime and aviation navigation. Exactly 1852 m.
One thousandth of an inch. Used for coating thickness, wire diameter, and PCB trace width.
Equal to 6 feet. Traditionally used for measuring water depth in maritime applications.
Surveyor's chain equals 66 feet (80 chains = 1 mile). Still used in US land surveying and property descriptions.
Equal to 16.5 feet or 1/4 chain. Used in some US land survey descriptions and property law.
Equal to 660 feet or 10 chains. One-eighth of a mile. Occasionally found in land survey descriptions.
Equal to 0.1 nanometers. Used in crystallography, atomic physics, and spectroscopy.
Popular Length Conversions
- Foot to Meter (ft → m)
- Meter to Foot (m → ft)
- Inch to Millimeter (in → mm)
- Millimeter to Inch (mm → in)
- Mile to Kilometer (mi → km)
- Kilometer to Mile (km → mi)
- Inch to Centimeter (in → cm)
- Foot to Centimeter (ft → cm)
- Yard to Meter (yd → m)
- Meter to Millimeter (m → mm)
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