Use our Free online length converter to convert length units like Meter (m), Inch (in), Foot (ft), Kilometer (km), Centimeter (cm), Light Year (LY), Angstrom, Furlong, and more.
Welcome to SEO Pheonix Length Converter, the one-stop free online application to convert length and distance units with ease. Be a student, engineer, traveler, or scientist — this versatile Length Unit Converter facilitates instant unit changes between Metric, Imperial, and Astronomical units.
From Meters (m) to Inches (in), Feet (ft), Kilometers (km), Light Years (LY), Angstroms (Å), and Astronomical Units (AU) — this converter makes unit-length conversions easy in seconds.
A Length Converter/Unit Converter for Length is a computer program that enables you to convert one unit of length or distance to another. Length is a basic measurement that describes how long something is — from microscopic distances to astronomical scales.
For instance:
1 meter = 100 centimeters
1 inch = 2.54 centimeters
1 kilometer = 0.6214 miles
1 light year = 9.461 × 10¹² kilometers
Using the online Length Converter, you can convert any of these instantly without doing manual calculations.
Here are the top reasons why millions of users prefer online conversion tools:
Accuracy: No chance of human error in calculations.
Speed: Instant conversions between multiple units.
Global Use: Supports both Metric and Imperial systems.
Free & Easy: No downloads, no login — easy and free-to-use.
No matter if you are converting millimeters to inches, kilometers to miles, or light years to meters, this tool saves time and guarantees accuracy.
Following is a comprehensive list of common and special units of length which you can convert through this tool:
| Unit Name | Symbol | Description |
| Meter | m | The base SI unit of length. 1 meter = 100 centimeters. |
| Centimeter | cm | Commonly used for small measurements (1 cm = 0.01 m). |
| Millimeter | mm | Used in mechanical and precise measurements (1 mm = 0.001 m). |
| Kilometer | km | 1 km = 1000 m, often used for distance between places. |
| Inch | in | 1 inch = 2.54 cm (Imperial system). |
| Foot | ft | 1 foot = 12 inches = 0.3048 meters. |
| Yard | yd | 1 yard = 3 feet = 0.9144 meters. |
| Mile | mi | 1 mile = 1.60934 kilometers. |
| Fathom | ftm | Commonly used in measuring water depth (1 fathom = 6 feet). |
| Furlong | fur | Used in horse racing (1 furlong = 201.168 meters). |
| League | league | Distance once used by sailors (1 league ≈ 4.8 km). |
| Angstrom | Å | Used in atomic and molecular scale (1 Å = 10⁻¹⁰ m). |
| Astronomical Unit | AU | Distance from Earth to Sun (~149,597,870.7 km). |
| Light Year | LY | Distance light travels in one year (~9.461 × 10¹² km). |
| Parsec | pc | 1 parsec ≈ 3.26 light years. |
| Ell | ell | Old textile measurement (≈ 1.14 m). |
| Em | em | Typographical length unit, relative to font size. |
The following are some of the commonly used length conversion formulas:
Meters to Centimeters:
1 meter=100 centimeters
Meters to Inches:
1 meter=39.3701 inches
Foot to Meters:
1 foot=0.3048 meters
Light Year to Kilometers:
1 light year=9.461×1012 km
Astronomical Unit to Meters:
1 AU=1.495978707×1011 m
These equations are the foundation of the conversion logic applied in the SEO Pheonix Length Converter Tool.
The metric system is used universally around the world. It has:
Millimeter (mm)
Centimeter (cm)
Meter (m)
Kilometer (km)
It is founded upon powers of 10, so conversion is easy and uniform.
Used mostly in the USA and UK for everyday measurement.
It consists of:
Inch (in)
Foot (ft)
Yard (yd)
Mile (mi)
Example:
12 inches = 1 foot
3 foot = 1 yard
1760 yards = 1 mile
Our Length Converter Tool can easily convert between these two systems.
Length conversion is not all about meters or inches. Scientists deal with special units for scales as extreme as subatomic to cosmic distances.
Angstrom (Å): Atomic physics uses it to measure molecule sizes and wavelengths.
Fermi (fm): Subatomic particles measured using it (1 fm = 10⁻¹⁵ m).
Astronomical Unit (AU): Solar system distances measured using it.
Light Year (LY): Distance covered by light in one year.
Parsec (pc): Astronomers use it for large-scale distances.
This converter allows you to convert microscopic measurements into cosmic distances in an instant — all in one location.
Choose the unit you are converting from (e.g., meter, inch, foot, km).
Type in the numerical value.
Select the unit to convert to.
The answer is displayed immediately with high precision.
Example:
If you type in 5 kilometers and choose miles, you will get:
5 km=3.10686 miles
It is easy, fast, and 100% accurate.
Length and distance conversion is applied in many areas:
Conversion of blueprints from feet to meters.
Lands area or material measurements calculations.
Converting molecular distances (angstroms to nanometers).
Measuring astronomical distances in AU or light years.
Students converting metric to imperial units for physics or math problems.
Converting road distances (miles to kilometers).
Aviation route measurements.
Product dimensions in multiple unit systems.
CNC and machining specifications.
✅ Universal Coverage: Converts over 20+ length and distance units.
✅ Free & Accurate: 100% dependable mathematical conversions.
✅ User-Friendly Interface: Simple design with immediate results.
✅ Metric, Imperial & Astronomical Units supported.
✅ Mobile Friendly: Compatible with all devices.
We at SEO Pheonix create tools that make tricky conversions easy.
Our Length Converter Tool is superior because it:
Handles more than 20 international length units.
Offers instant accurate conversions.
Is suited for scientific, educational, and industrial applications.
Whether you're an engineer performing distance calculations or a student doing homework — SEO Pheonix provides speed, precision, and ease of use in one application.
With our tool you convert units:
convert cm to inches
convert meter to feet
convert inches to cm
convert feet to meter
convert miles to kilometers
SEO Pheonix Length Converter/Length Converter to Meters is not just a calculator — it's a full-fledged length and distance conversion tool. From nanometer to light year, our converter provides instant, accurate, and flexible results in all systems of measurement.
So whenever you have to convert meters to feet, kilometers to miles, or even light years to kilometers, let SEO Pheonix Length Converter/Length Converter to MM do the math for you — quick, precise, and free.
The SI unit of length is the meter (m). It's the universal base unit used everywhere.
There are 2.54 centimeters in an inch.
Multiply the number of feet by 0.3048 to produce meters.
A kilometer is a metric unit; a mile is an imperial unit.
1 mile = 1.60934 kilometers.
Yes! 1 light year = 9.461 × 10¹² kilometers.