Length converter
Convert between metric and imperial length units instantly. Translate a 1.75 m height to feet and inches, a 5K race distance to miles, or a 2×4 lumber label to actual millimeters for CAD. Exact conversion factors — no rounding until you choose display precision.
Value
From
m
km
cm
mm
mi
yd
ft
in
To
m
km
cm
mm
mi
yd
ft
in
Result
3.28 ft
How to convert length units
1. Enter a value in the source unit field.
2. Select source and target units (e.g. meters → feet).
3. Read the converted result — other common units may update simultaneously.
4. Copy the value you need for your document or calculator.
Length conversion examples
Height: meters to feet/inches
1.75 m = 5.741 ft ≈ 5 ft 8.9 in — common for medical forms abroad.
Running distance
5 km = 3.107 miles. A 10K race is 6.214 miles.
Construction lumber
A nominal "2 inch" board is actually 1.5 in = 38.1 mm after planing — verify specs, not just nominal names.
When to use the length converter
• When you read international blueprints, fitness apps, or product specs in unfamiliar units.
• When you shop for furniture or flooring across US and EU retailers.
• When you convert map scale distances for hiking or model building.
When to choose something else
• When you need area (m²) or volume (m³) — use area or volume converters.
• When you convert pixels to CSS rem/em — use the pixels-to-rem tool.
• When you need surveyor chains or nautical miles — verify the tool lists those units.
Metric vs imperial in daily life
The US uses feet and miles for road distance; science and most manufacturing use meters. UK mixes miles on roads with meters in construction. When collaborating globally, store canonical values in SI (meters) and convert for display only.
Precision for engineering vs everyday use
Building tolerances may need millimeter precision; travel estimates can round to one decimal. Avoid double-rounding: convert once from the source measurement rather than chaining approximate mental conversions.
Frequently asked questions
How many feet in a meter?
1 meter = 3.280839895 feet exactly by definition (international foot).
How many inches in a foot?
12 inches = 1 foot. 1 inch = 25.4 mm exactly.
What is the difference between miles and kilometers?
1 mile = 1.609344 km. US road signs use miles; most countries use kilometers.
Are UK and US feet the same?
Yes for international foot used in modern conversions. Historical survey feet differ slightly — rare today.
Can I convert fractional inches?
Enter decimals (1.5 in) or use feet-inches mode if the tool supports 5'8" style input.
Is data uploaded?
No. Conversions run locally in your browser.