Length Converter
Convert between 12 length units.
About Length
Length is the base measurement of distance, and the metre is its SI base unit — defined since 1983 by how far light travels in a vacuum in 1/299,792,458 of a second. Most mistakes come from mixing metric and imperial: a mile is 1,609.344 metres, and an inch is exactly 25.4 millimetres by international agreement. So a height of 5 foot 10 is 70 inches, or 1.778 metres.
Conversion table — 1 unit in kilometer
| Unit | Kilometer |
|---|---|
| Kilometer | 1 |
| Meter | 0.001 |
| Decimeter | 0.0001 |
| Centimeter | 0.00001 |
| Millimeter | 0.000001 |
| Micrometer | 1e-9 |
| Nanometer | 1e-12 |
| Mile | 1.60934 |
| Yard | 0.0009144 |
| Foot | 0.0003048 |
| Inch | 0.0000254 |
| Nautical mile | 1.852 |
Length conversions — frequently asked
- What is 1 Kilometer in meter?
- 1 Kilometer = 1000 meter.
- What is 1 Kilometer in decimeter?
- 1 Kilometer = 10000 decimeter.
- What is 1 Kilometer in centimeter?
- 1 Kilometer = 100000 centimeter.
- What is 1 Kilometer in millimeter?
- 1 Kilometer = 1000000 millimeter.
- What is 1 Kilometer in micrometer?
- 1 Kilometer = 1000000000 micrometer.
- What is 1 Kilometer in nanometer?
- 1 Kilometer = 1000000000000 nanometer.
Related converters
About Unit Converter
A unit converter changes a measurement from one unit to another. Pick a category — length, weight, temperature, data, area, speed, and 75+ more, including engineering and scientific units like pressure, torque, and viscosity — enter a value, and get an accurate conversion instantly. It runs in your browser with no sign-up and nothing to install.
Frequently asked questions
- How many unit categories are supported?
- Over 75, from everyday units (length, mass, temperature, volume, area, speed, data storage) to technical and scientific ones (energy, pressure, torque, viscosity, molar concentration, luminance, and more).
- Does it convert engineering and scientific units?
- Yes. Alongside common units it covers engineering and scientific categories — force, pressure, torque, thermal, flow, radiology, and CSS/typography units — with precise conversion factors.
- Are the conversions accurate?
- Yes. Conversions use standard factors and precise formulas, including non-linear ones like temperature, so results are exact.
- Do I need to install an app?
- No download needed — it's a free web app that runs in any modern browser on phone, tablet, or desktop, with nothing to install and nothing sent anywhere.
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