How many centimeters are in an inch?

Exactly 2.54 centimeters. That definition makes inch-to-centimeter conversions precise rather than approximate.

How 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.

Is a yard the same as a meter?

No. 1 yard equals 0.9144 meters, so a yard is slightly shorter than a meter.

When 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.

Why 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.

CONUnit Conversion

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.

Length

From unit

To unit

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How It Works

Formula

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

Where

$v$: Input value
$r$: Converted length
$f_{\text{from}}$: Conversion factor of the source unit (meters per unit)(m)
$f_{\text{to}}$: 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.

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