What is Length?
The term length refers to the size of an object or the distance between two points. The length of an object or the distance between two points is measured in length. The longest side of an object is its extended dimension or length. The meter is the SI unit of length, while the centimeter is the base unit in the cgs system.
We can convert a meter into millimeters (mm), centimeters (cm), and kilometers (km) depending on the length that needs to be measured (km).
Centimeters and millimeters are used to measure shorter distances, while meters and kilometers are used to measure longer distances. For example, the length of a pencil can be measured in centimeters (cm), while the distance between two buildings or locations can be measured in kilometers.
Length conversion table
Check out this length conversion table to see what the conversion factors are between nine common length units:
| millimeter (mm) | centimeter (cm) | meter (m) | kilometer (km) | inch (in) | foot / feet (ft) | yard (yd) | mile (mi) | nautical mile (nmi) |
1 millimeter (mm) | 1 | 0.1 | 0.001 | 0.000001 | 0.03937 | 0.003281 | 0.0010936 | 0.0000006214 | 0.00000054 |
1 centimeter (cm) | 10 | 1 | 0.01 | 0.00001 | 0.3937 | 0.03281 | 0.010936 | 0.000006214 | 0.0000054 |
1 meter (m) | 1000 | 100 | 1 | 0.001 | 39.37 | 3.281 | 1.0936 | 0.0006214 | 0.00054 |
1 kilometer (km) | 1000000 | 100000 | 1000 | 1 | 39370 | 3281 | 1093.6 | 0.6214 | 0.54 |
1 inch (in) | 25.4 | 2.54 | 0.0254 | 0.0000254 | 1 | 0.08333 | 0.02778 | 0.000015783 | 0.000013715 |
1 foot / feet (ft) | 304.8 | 30.48 | 0.3048 | 0.0003048 | 12 | 1 | 0.33333 | 0.0001894 | 0.00016458 |
1 yard (yd) | 914.4 | 91.44 | 0.9144 | 0.0009144 | 36 | 3 | 1 | 0.0005682 | 0.0004937 |
1 mile (mi) | 1609344 | 160934 | 1609.3 | 1.6093 | 63360 | 5280 | 1760 | 1 | 0.869 |
1 nautical mile (nmi) | 1852000 | 185200 | 1852 | 1.852 | 72913 | 6076 | 2025.4 | 1.1508 | 1 |