Length & Distance Converter
Convert between metric and imperial length units like meters, kilometers, miles, feet, inches, and more for travel, DIY, and engineering projects.
| Kilometers | Miles |
|---|---|
| 0.1 | 0.06214 |
| 0.5 | 0.31069 |
| 1 | 0.62137 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 15 | 9.32057 |
| 20 | 12.42742 |
Understanding Length Units 📏
Length measures the distance between two points and can be expressed in metric or imperial units.
From millimeters for electronics to miles for travel, using the right unit ensures accuracy and clarity.
This converter helps with DIY projects, engineering calculations, travel planning, and navigation.
Key Facts
- Metric units: mm, cm, dm, m, km, Gm — easy for calculations, widely used globally.
- Imperial units: in, ft, yd, mi, nmi — commonly used in the US and for navigation.
- Feet & Inches is a compound unit combining feet and leftover inches.
- Nautical miles are based on the Earth's latitude/longitude — used in aviation and marine navigation.
Formulas
1 m = 1000 mm- Convert meters to millimeters.1 m = 100 cm- Convert meters to centimeters.1 km = 1000 m- Convert kilometers to meters.1 in = 2.54 cm- Convert inches to centimeters.1 ft = 12 in- Convert feet to inches.1 yd = 3 ft- Convert yards to feet.1 mi = 5280 ft- Convert miles to feet.1 nmi = 1852 m- Convert nautical miles to meters.
Length Conversion Examples
- A pencil ≈ 18 cm
- A room ≈ 5 m (≈ 16 ft 5 in)
- A marathon ≈ 42.195 km (≈ 26.2 mi)
- Distance across the English Channel ≈ 33 km (≈ 17.8 nmi)
- Earth's diameter ≈ 12,742 km
FAQs
Why are there so many length units?
Different units evolved for convenience in different contexts: small units for precision, large units for travel or maps, and local systems like imperial units in the US.
What is the difference between miles and nautical miles?
A mile is a land-based measurement (1 mi = 1,609.34 m), while a nautical mile is based on the Earth's circumference (1 nmi = 1,852 m), used in marine and air navigation.
How do I convert between metric and imperial?
Use the conversion formulas provided: inches ↔ cm, feet ↔ meters, yards ↔ meters, miles ↔ kilometers, nautical miles ↔ meters.