Length and Distance Converter
Convert length and distance across the standard metric sequence from kilometers to nanometers, plus land miles and nautical miles.
This calculator is useful when you need a quick unit check without working through each conversion factor by hand. Enter one value to compare every supported unit side by side.
Length and Distance Converter
Enter a length or distance and choose its starting unit. The table follows the standard SI sequence from kilometers through nanometers, including hectometers, decameters, and decimeters, then compares land miles and nautical miles.
| Unit | Symbol | Conversion factor | 1 km = |
|---|---|---|---|
| kilometer | km | 1 km = 1,000 m | 1km |
| hectometer | hm | 1 hm = 100 m | 10hm |
| decameter | dam | 1 dam = 10 m | 100dam |
| meter | m | 1 m = 1 m | 1,000m |
| decimeter | dm | 1 dm = 0.1 m | 10,000dm |
| centimeter | cm | 1 cm = 0.01 m | 100,000cm |
| millimeter | mm | 1 mm = 0.001 m | 1 × 106mm |
| micrometer | µm | 1 µm = 1 × 10−6 m | 1 × 109µm |
| nanometer | nm | 1 nm = 1 × 10−9 m | 1 × 1012nm |
| land mile | mi | 1 mi = 1,609.344 m | 0.62137119mi |
| nautical mile | nmi | 1 nmi = 1,852 m | 0.5399568nmi |
Length and distance conversions
Use this converter for lab dimensions, travel distances, engineering measurements, microscopy scales, and marine navigation. Land miles and nautical miles use different definitions.
The metric table includes every standard 10-fold step from kilometer through millimeter. Below millimeter, the internationally recognized SI prefixes continue with micrometer and nanometer; there are no separate official names for each intervening 10-fold step.
Example
Enter 1 nautical mile to compare it with 1,852 meters and approximately 1.151 land miles.