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Length Converter with Log History

Convert between 9 length units including meters, kilometers, feet, inches, miles, yards, and millimeters with browser-based conversion history

Length
Distance
Measurement
Meter
Feet
Unit Conversion
Enter any positive length value for conversion.

No conversion history yet.

Successfully converted lengths will appear here.

Quick Reference

Common Length Conversions

1 Meter3.2808 ft / 39.3701 in
1 Kilometer0.6214 mi / 1,000 m
1 Foot0.3048 m / 12 in
1 Inch2.54 cm / 25.4 mm
1 Mile1.6093 km / 5,280 ft
1 Yard0.9144 m / 3 ft
1 Centimeter0.3937 in / 10 mm

Conversion Formulas

1 m = 3.28084 ft = 39.3701 in
1 km = 0.621371 mi = 1,000 m
1 ft = 0.3048 m = 12 in
1 in = 2.54 cm = 25.4 mm
1 mi = 1.60934 km = 5,280 ft

Sample Lengths

About Length Converter

Length Units

Length can be measured in different units depending on the region and application. This tool supports 9 units including: metric units (Millimeter, Centimeter, Decimeter, Meter, Kilometer) and imperial units (Inch, Foot, Yard, Mile) used primarily in the United States.

Common Use Cases

  • Convert height measurements between feet/inches and centimeters
  • Calculate travel distances in kilometers or miles
  • Measure room dimensions for home improvement projects
  • Convert fabric or material lengths for sewing and crafts
  • Compare international size standards and measurements

History Feature

Successfully converted lengths are automatically saved to your browser's local storage. You can revisit previous conversions, compare different measurements, and manage your conversion history.

Privacy & Security

All length conversions happen in your browser. No data is sent to our servers. History is stored locally in your browser and can be cleared at any time.

Frequently Asked Questions (FAQ)

What length units can I convert between?
This tool supports conversion between 9 length units: Millimeter (mm), Centimeter (cm), Decimeter (dm), Meter (m), Kilometer (km), Foot (ft), Inch (in), Mile (mi), and Yard (yd). You can convert from any unit to all others simultaneously.
How do I convert meters to feet?
To convert meters to feet, multiply by 3.28084. For example, 1 meter = 3.28084 feet, and 10 meters = 32.8084 feet. Simply enter your meter value and select meters as the input unit.
What is the difference between metric and imperial measurements?
Metric measurements (millimeter, centimeter, meter, kilometer) are based on powers of 10 and used worldwide. Imperial measurements (inch, foot, yard, mile) are primarily used in the United States. 1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1.609 km.
How many centimeters are in an inch?
There are exactly 2.54 centimeters in 1 inch. This is a fixed conversion factor used internationally. For example, 10 inches = 25.4 cm.
How do I convert kilometers to miles?
To convert kilometers to miles, divide by 1.609344 (or multiply by 0.621371). For example, 1 kilometer = 0.621371 miles, and 100 kilometers = 62.1371 miles.
What is a decimeter?
A decimeter is a metric unit of length equal to one-tenth of a meter (0.1 m) or 10 centimeters. While less commonly used than meters or centimeters, it's part of the metric system and useful for certain measurements.
Is my conversion history secure?
Yes, all conversions happen locally in your browser. Your conversion history is stored only in your browser's local storage and is never sent to any servers.
How accurate are the conversions?
All conversions use internationally accepted conversion factors with floating-point precision. Results are displayed with 4 decimal places by default for high accuracy in professional and scientific applications.
Can I use this for height conversions?
Absolutely! This tool is perfect for converting heights between metric and imperial units. Whether you're converting your height from feet and inches to centimeters or vice versa, our converter handles it all with precision.