JavaScript is turned off in your web browser.

Please turn it on to take full advantage of this website, then refresh the web page.

Calculator for conversions between length or distance units.

From Unit:

- Select -
Ångström (Å)
Astronomical Unit (AU)
Atomic Unit Of Length (Bohr) (a₀)
Centimeter (cm)
Chain (ch)
Fermi (fm)
Foot (ft)
Foot [U.S.] (ft)
Furlong (fur)
Inch (in)
Kilometer (km)
League (land) (lea)
League (nautical) (nl)
Light-Day (l.d.)
Light-Hour (l.h.)
Light-Minute (l.m.)
Light-Second (l.s.)
Light-Year (l.y.)
Line (ln)
Link (lnk)
Meter (m)
Microinch (µin)
Micron (µ)
Mil (mil)
Mile (mi)
Mile [U.S.] (mi)
Mile (nautical) (nmi)
Mile [U.S.] (nautical) (nmi)
Millimeter (mm)
Nanometer (nm)
Pica (typography) (pica)
Picometer (pm)
Point (typography) (pt)
Rod (rd)
Twip (typography) (twp)
X Unit (xu)
Yard (yd)

Input Value:

To Unit:

- Select -
Ångström (Å)
Astronomical Unit (AU)
Atomic Unit Of Length (Bohr) (a₀)
Centimeter (cm)
Chain (ch)
Fermi (fm)
Foot (ft)
Foot [U.S.] (ft)
Furlong (fur)
Inch (in)
Kilometer (km)
League (land) (lea)
League (nautical) (nl)
Light-Day (l.d.)
Light-Hour (l.h.)
Light-Minute (l.m.)
Light-Second (l.s.)
Light-Year (l.y.)
Line (ln)
Link (lnk)
Meter (m)
Microinch (µin)
Micron (µ)
Mil (mil)
Mile (mi)
Mile [U.S.] (mi)
Mile (nautical) (nmi)
Mile [U.S.] (nautical) (nmi)
Millimeter (mm)
Nanometer (nm)
Pica (typography) (pica)
Picometer (pm)
Point (typography) (pt)
Rod (rd)
Twip (typography) (twp)
X Unit (xu)
Yard (yd)

Converted Value:

Length or Distance

Length is a measure of the longest extent of an object (anything) as measured from end to end.
Distance is a measure of how far apart objects are. In physics or everyday discussion, length is synonymous with distance.
The SI unit of length is the *meter* (m). Other commonly used units of length are the *centimeter* (cm),
the *kilometer* (km), the *inch* (in), the *foot* (ft) and the *yard* (yd).

When measuring much longer distances such as those in astronomy, commonly used units of length are the*astronomical unit* (AU) and the *light-year*.
When measuring much smaller distances such as those on the microscopic scale in chemistry, commonly used units of length are the *micron* (µ) and the *Ångström* (Å).

Length is a one-dimensional measure, while area is a two-dimensional measure (length squared) and volume is a three-dimensional measure (length cubed).

Just for fun, what is the length of the Earth's circumference at the equator in*Ångström* (Å)?

When measuring much longer distances such as those in astronomy, commonly used units of length are the

Length is a one-dimensional measure, while area is a two-dimensional measure (length squared) and volume is a three-dimensional measure (length cubed).

Just for fun, what is the length of the Earth's circumference at the equator in

Related Conversion Tool

Do you know?

How round is the Earth?

The Earth is round, and we know that. However, the Earth is not a perfect sphere. The length of the Earth's circumference at the equator is 40,075 km, while its circumference from pole to pole is 40,008 km - a bit shorter.