Length converter

This length converter tool helps you convert between 97 different units:

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Common length units explained

Learn more about these commonly used length units:

All possible length conversions

Below, we provide an overview of all the length conversions available on this website to help you navigate and utilize our resources efficiently.

Unit	Conversion
Meters (m)	Base unit
Kilometers (km)	Kilometers to Meters \| Meters to Kilometers
Hectometers (hm)	Hectometers to Meters \| Meters to Hectometers
Dekameters (dam)	Dekameters to Meters \| Meters to Dekameters
Decimeters (dm)	Decimeters to Meters \| Meters to Decimeters
Centimeters (cm)	Centimeters to Meters \| Meters to Centimeters
Millimeters (mm)	Millimeters to Meters \| Meters to Millimeters
Miles (mi)	Miles to Meters \| Meters to Miles
Yards (yd)	Yards to Meters \| Meters to Yards
Feet (ft)	Feet to Meters \| Meters to Feet
Inches (in)	Inches to Meters \| Meters to Inches
Light years (ly)	Light years to Meters \| Meters to Light years
Astronomical units (au)	Astronomical units to Meters \| Meters to Astronomical units
Quettameters (Qm)	Quettameters to Meters \| Meters to Quettameters
Ronnameters (Rm)	Ronnameters to Meters \| Meters to Ronnameters
Yottameters (Ym)	Yottameters to Meters \| Meters to Yottameters
Zettameters (Zm)	Zettameters to Meters \| Meters to Zettameters
Exameters (Em)	Exameters to Meters \| Meters to Exameters
Petameters (Pm)	Petameters to Meters \| Meters to Petameters
Terameters (Tm)	Terameters to Meters \| Meters to Terameters
Gigameters (Gm)	Gigameters to Meters \| Meters to Gigameters
Megameters (Mm)	Megameters to Meters \| Meters to Megameters
Micrometers (μm)	Micrometers to Meters \| Meters to Micrometers
Nanometers (nm)	Nanometers to Meters \| Meters to Nanometers
Picometers (pm)	Picometers to Meters \| Meters to Picometers
Femtometers (fm)	Femtometers to Meters \| Meters to Femtometers
Attometers (am)	Attometers to Meters \| Meters to Attometers
Zeptometers (zm)	Zeptometers to Meters \| Meters to Zeptometers
Yoctometers (ym)	Yoctometers to Meters \| Meters to Yoctometers
Rontometers (rm)	Rontometers to Meters \| Meters to Rontometers
Quectometers (qm)	Quectometers to Meters \| Meters to Quectometers
Microns (µ)	Microns to Meters \| Meters to Microns
Megaparsecs (Mpc)	Megaparsecs to Meters \| Meters to Megaparsecs
Kiloparsecs (kpc)	Kiloparsecs to Meters \| Meters to Kiloparsecs
Parsecs (pc)	Parsecs to Meters \| Meters to Parsecs
Leagues (lea)	Leagues to Meters \| Meters to Leagues
Leagues (uk) (lea (UK))	Leagues (uk) to Meters \| Meters to Leagues (uk)
Leagues (ancient celtic) (lea (Celtic))	Leagues (ancient celtic) to Meters \| Meters to Leagues (ancient celtic)
Nautical leagues (uk) (nlea (UK))	Nautical leagues (uk) to Meters \| Meters to Nautical leagues (uk)
Nautical leagues (international) (nlea (int.))	Nautical leagues (international) to Meters \| Meters to Nautical leagues (international)
Nautical miles (uk) (nmi (UK))	Nautical miles (uk) to Meters \| Meters to Nautical miles (uk)
Nautical miles (international) (nmi (int.))	Nautical miles (international) to Meters \| Meters to Nautical miles (international)
Miles (statute) (mi (statute))	Miles (statute) to Meters \| Meters to Miles (statute)
Miles (us survey) (mi (US survey))	Miles (us survey) to Meters \| Meters to Miles (us survey)
Miles (roman) (mi (Roman))	Miles (roman) to Meters \| Meters to Miles (roman)
Kiloyards (kyd)	Kiloyards to Meters \| Meters to Kiloyards
Furlongs (fur)	Furlongs to Meters \| Meters to Furlongs
Furlongs (us survey) (fur (US survey))	Furlongs (us survey) to Meters \| Meters to Furlongs (us survey)
Chains (ch)	Chains to Meters \| Meters to Chains
Chains (us survey) (ch (US survey))	Chains (us survey) to Meters \| Meters to Chains (us survey)
Ropes (rope)	Ropes to Meters \| Meters to Ropes
Rods (rd)	Rods to Meters \| Meters to Rods
Rods (us survey) (rd (US survey))	Rods (us survey) to Meters \| Meters to Rods (us survey)
Perches (perch)	Perches to Meters \| Meters to Perches
Poles (pole)	Poles to Meters \| Meters to Poles
Fathoms (fathom)	Fathoms to Meters \| Meters to Fathoms
Fathoms (us survey) (fathom (US survey))	Fathoms (us survey) to Meters \| Meters to Fathoms (us survey)
Ells (ell)	Ells to Meters \| Meters to Ells
Feet (us survey) (ft (US survey))	Feet (us survey) to Meters \| Meters to Feet (us survey)
Links (link)	Links to Meters \| Meters to Links
Links (us survey) (link (US survey))	Links (us survey) to Meters \| Meters to Links (us survey)
Cubits (uk) (cubit (UK))	Cubits (uk) to Meters \| Meters to Cubits (uk)
Hands (hand)	Hands to Meters \| Meters to Hands
Spans (cloth) (span (cloth))	Spans (cloth) to Meters \| Meters to Spans (cloth)
Fingers (cloth) (finger (cloth))	Fingers (cloth) to Meters \| Meters to Fingers (cloth)
Nails (cloth) (nail (cloth))	Nails (cloth) to Meters \| Meters to Nails (cloth)
Inches (us survey) (in (US survey))	Inches (us survey) to Meters \| Meters to Inches (us survey)
Barleycorns (barleycorn)	Barleycorns to Meters \| Meters to Barleycorns
Mils (mil)	Mils to Meters \| Meters to Mils
Microinches (µin)	Microinches to Meters \| Meters to Microinches
Angstroms (Å)	Angstroms to Meters \| Meters to Angstroms
X units (xu)	X units to Meters \| Meters to X units
Fermi (fm)	Fermi to Meters \| Meters to Fermi
Arpents (arpent)	Arpents to Meters \| Meters to Arpents
Picas (pica)	Picas to Meters \| Meters to Picas
Points (point)	Points to Meters \| Meters to Points
Twips (twip)	Twips to Meters \| Meters to Twips
Alns (aln)	Alns to Meters \| Meters to Alns
Famns (famn)	Famns to Meters \| Meters to Famns
Calibers (caliber)	Calibers to Meters \| Meters to Calibers
Centiinches (cin)	Centiinches to Meters \| Meters to Centiinches
Japanese kens (ken)	Japanese kens to Meters \| Meters to Japanese kens
Russian archins (archin)	Russian archins to Meters \| Meters to Russian archins
Roman actus (actus)	Roman actus to Meters \| Meters to Roman actus
Spanish vara (var)	Spanish vara to Meters \| Meters to Spanish vara
Greek cubits (cubit (Greek))	Greek cubits to Meters \| Meters to Greek cubits
Long reeds (long reed)	Long reeds to Meters \| Meters to Long reeds
Reeds (reed)	Reeds to Meters \| Meters to Reeds
Long cubits (long cubit)	Long cubits to Meters \| Meters to Long cubits
Handbreadths (handbreadth)	Handbreadths to Meters \| Meters to Handbreadths
Fingerbreadths (fingerbreadth)	Fingerbreadths to Meters \| Meters to Fingerbreadths
Planck length (lP)	Planck length to Meters \| Meters to Planck length
Classical electron radius (re)	Classical electron radius to Meters \| Meters to Classical electron radius
Bohr radius (a0)	Bohr radius to Meters \| Meters to Bohr radius
Earth's equatorial radius (R (equatorial))	Earth's equatorial radius to Meters \| Meters to Earth's equatorial radius
Earth's polar radius (R (polar))	Earth's polar radius to Meters \| Meters to Earth's polar radius
Sun's radius (R (solar))	Sun's radius to Meters \| Meters to Sun's radius

What is Length?

Length is a fundamental unit of measurement that represents the distance between two points. It is used in various fields such as science, engineering, construction, and everyday life.

Common Units of Length

Length is measured using various units depending on the context and region. Some of the most common units include:

Meter (m) - The standard SI unit of length.
Kilometer (km) - Common for measuring long distances, where 1 km = 1,000 m.
Centimeter (cm) & Millimeter (mm) - Used for smaller measurements, where 1 cm = 10 mm.
Inch (in), Foot (ft), Yard (yd), Mile (mi) - Used in the Imperial and U.S. customary systems.
Nautical Mile - Used in navigation, where 1 nautical mile = 1,852 meters.

FAQs About Length

What is the difference between metric and imperial length measurements?

The metric system uses meters, centimeters, and kilometers, while the imperial system uses inches, feet, yards, and miles. The metric system is widely used worldwide, whereas the imperial system is primarily used in the United States.

How does temperature affect length measurements?

Materials expand or contract with temperature changes due to thermal expansion. For instance, metal structures like bridges and railroad tracks are designed with expansion joints to accommodate length variations caused by temperature fluctuations.

What is the longest possible physical measurement ever recorded?

The longest officially recognized physical measurement is the astronomical unit (AU), used to measure distances in space. One AU is approximately 149.6 million kilometers, representing the average distance between Earth and the Sun.

How is length measured in microscopic and atomic scales?

At microscopic and atomic scales, length is measured in nanometers (nm), picometers (pm), and even angstroms (Å). These units help scientists measure objects like DNA strands, semiconductor components, and individual atoms, where 1 nm = 1 billionth of a meter.