CalcLibrary

Length Converter

Convert cm, m, km, inches, feet, yards, and miles instantly. Built for height, room dimensions, product specs, race distances, and everyday metric-to-imperial conversions.

Examples

Change 180 cm into feet for a form or profile.

Converted length
5.9055 ft
Conversion
180 cm = 5.9055 ft

The result is smaller because the target unit is larger. One target unit holds about 30.48 source units.

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Examples

How It Works

Formula

r=v×ffromftor = v \times \dfrac{f_{\text{from}}}{f_{\text{to}}}

Variables

vv

Input value

rr

Converted length

ffromf_{\text{from}}

Conversion factor of the source unit (meters per unit)(m)

ftof_{\text{to}}

Conversion factor of the target unit (meters per unit)(m)

The calculator converts your value into meters as a base unit, then converts from meters into the target unit. This keeps metric and imperial length conversions consistent across every pair.

Reference factors used by the calculator (meters per unit):

  • 1 mm = 0.001 m
  • 1 cm = 0.01 m
  • 1 m = 1 m
  • 1 km = 1000 m
  • 1 in = 0.0254 m
  • 1 ft = 0.3048 m (12 in)
  • 1 yd = 0.9144 m
  • 1 mi = 1609.344 m

The value is first multiplied by the source factor to get meters, then divided by the target factor to land in the chosen unit.

Frequently Asked Questions

01How many centimeters are in an inch?
Exactly 2.54 centimeters. That definition makes inch-to-centimeter conversions precise rather than approximate.
02How many feet are in a meter?
1 meter equals 3.28084 feet. A quick mental shortcut is that 2 meters is a little over 6.5 feet.
03Is a yard the same as a meter?
No. 1 yard equals 0.9144 meters, so a yard is slightly shorter than a meter.
04When should I use mm instead of cm?
Use millimeters for fine tolerances such as hardware, engineering parts, or product thickness. Use centimeters for larger household measurements.
05Why does the number get much bigger when I convert to a smaller unit?
Because the physical length stays the same while the unit size changes. A smaller target unit needs more counted units, so the numeric result increases.

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