Free Online Length Converter | Convert cm, inches, ft, and more

the ultimate tool for all your measurement needs. Whether you’re a student, a DIY enthusiast, a professional, or just need a quick conversion, our tool provides instant and accurate results for a vast range of length units. From standard metric conversions like centimeters to inches and meters to feet, to more specialized and historical units, our converter handles it all with ease.

Our easy-to-use interface and real-time conversion features ensure a seamless experience. Simply enter your value, and our tool will instantly give you the result, eliminating the need for complex calculations. With support for dozens of units, you can convert everything from millimeters to miles, kilometers to yards, and even obscure units like a parsec or furlong.

No matter the task, our tool is designed to be your go-to solution for converting length, distance, and dimension.”

Features of the Tool

This section highlights the key functionalities of your converter, making it appealing to users and providing more keywords for search engines.

• Quick Links: Access the most popular length conversions instantly with our dedicated quick links, such as inches to cm, meters to feet, and km to miles.
• Real-time Conversion: Get instant results as you type, eliminating the need to click a “Convert” button.
• Comprehensive Unit List: Our database includes over 50 length units, categorized for easy navigation.
• Search and Filter: Quickly find any unit you need with our real-time search bars for both “From” and “To” units.
• Swap Function: Easily reverse your conversion with a single click using the convenient swap button.

Common Length Conversions

Metric to Imperial Conversions

Metric System

The meter [m] is the standard base unit for length in the metric system. All other metric units are defined as a multiple or fraction of the meter, making conversions straightforward.

• Kilometer [km]: 1 km = 1,000 m
• Hectometer [hm]: 1 hm = 100 m
• Dekameter [dam]: 1 dam = 10 m
• Decimeter [dm]: 1 dm = 0.1 m
• Centimeter [cm]: 1 cm = 0.01 m
• Millimeter [mm]: 1 mm = 0.001 m
• Micrometer [µm]: 1 µm = 1.0E-6 m
• Nanometer [nm]: 1 nm = 1.0E-9 m
• Picometer [pm]: 1 pm = 1.0E-12 m
• Femtometer [fm]: 1 fm = 1.0E-15 m
• Attometer [am]: 1 am = 1.0E-18 m

Imperial and U.S. Customary System

These units are commonly used in the United States and a few other countries. They are based on historical standards.

• Mile [mi]: 1 mi = 1,609.344 m
• Yard [yd]: 1 yd = 0.9144 m
• Foot [ft]: 1 ft = 0.3048 m
• Inch [in]: 1 in = 0.0254 m
• Furlong [fur]: 1 fur = 201.168 m
• Chain [ch]: 1 ch = 20.1168 m
• Rod [rd] / Perch / Pole: 1 rd = 5.0292 m
• Fathom [fath]: 1 fath = 1.8288 m
• Link [li]: 1 li = 0.201168 m

Astronomical and Scientific Units

These units are used to measure vast or incredibly small distances in science, from the cosmos to subatomic particles.

• Light-Year [ly]: 1 ly = 9.46 x 10¹⁵ m (the distance light travels in one year)
• Astronomical Unit [AU]: 1 AU = 149,597,870,691 m (the average distance from the Earth to the Sun)
• Parsec [pc]: 1 pc = 3.08568 x 10¹⁶ m
• Angstrom [Å]: 1 Å = 1.0E-10 m
• Bohr Radius [b]: 1 b = 5.29177 x 10⁻¹¹ m
• Planck Length: 1.61605 x 10⁻³⁵ m (the smallest possible length in physics)
• Femtometer [F, f]: 1 F = 1.0E-15 m (also known as a fermi)

Historical and Specialized Units

These units are not in common modern use but are important in historical or specific contexts.

• Mil [mil]: 1 mil = 2.54E-5 m (used in engineering and manufacturing)
• League [lea]: 1 lea = 4,828.032 m
• Nautical Mile (international): 1 nm = 1,852 m
• Cubit (UK): 1 cubit = 0.4572 m
• Hand: 1 hand = 0.1016 m
• Pica: 1 pica = 0.0042333 m (used in typography)
• Barleycorn: 1 barleycorn = 0.008467 m