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Measurement
Length Conversion Table
Values shown for 1 Meter
About Length Conversions
Length measurements form the backbone of construction, manufacturing, and navigation. The metric system, based on the meter (defined by the speed of light), provides a coherent decimal framework used by scientists and most countries worldwide. The imperial system — inches, feet, yards, and miles — remains prevalent in the United States and is deeply embedded in American construction standards, road signage, and everyday language. Converting between these systems accurately matters: a 1% error in a length conversion on a 100-meter building plan translates to a full meter of misalignment. Our converter uses NIST-traceable exact conversion factors (1 inch = exactly 25.4 mm) to eliminate rounding errors in professional applications.
| Unit Name | Symbol | Value | Formula |
|---|---|---|---|
| Centimeter | cm | 100 | divide by 100 |
| Foot | ft | 3.28084 | multiply by 0.3048 |
| Inch | in | 39.3701 | multiply by 0.0254 |
| Kilometer | km | 0.001 | multiply by 1000 |
| Light Year | ly | 1.057 × 10⁻¹⁶ | multiply by 9.4607 × 10¹⁵ |
| Meter | m | 1 | base unit |
| Micrometer | μm | 1000000 | divide by 1,000,000 |
| Mile | mi | 0.000621371 | multiply by 1609.344 |
| Millimeter | mm | 1000 | divide by 1000 |
| Nanometer | nm | 1000000000 | divide by 1,000,000,000 |
| Nautical Mile | nmi | 0.000539957 | multiply by 1852 |
| Parsec | pc | 3.24078 × 10⁻¹⁷ | multiply by 3.0857 × 10¹⁶ |
| Yard | yd | 1.09361 | multiply by 0.9144 |