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Length Converter

Convert length or distance between meters, feet, inches, yards, miles, kilometers, and centimeters. Enter value and choose from/to units.

Result

Result

0.3048m

Length Converter

What this calculator does

This converter converts length or distance between common units such as meters, feet, inches, yards, miles, kilometers, and centimeters. You enter a value and choose from and to units; the result is the equivalent length in the target unit.

It is useful for construction, travel, sports, DIY projects, and any day-to-day length conversion. Builders, travelers, and students use it to switch between metric (SI) and imperial/US units quickly.

How to use it

  1. Enter a numeric value in the input field (e.g. 5 or 100).
  2. Select the from unit (e.g. feet, meters, miles).
  3. Select the to unit (e.g. meters, inches, km).
  4. The result appears immediately in the Result section. You can swap units or change the value to try other conversions.

All supported units are listed in the dropdowns; the conversion is exact for the defined factors (e.g. 1 in = 2.54 cm).

Formulas used

Conversions use exact definitions and standard factors, e.g.:

  • 1 inch = 2.54 cm (international inch)
  • 1 foot = 12 inches
  • 1 yard = 3 feet
  • 1 mile = 5,280 feet
  • 1 meter = 100 cm
  • 1 km = 1,000 m

The calculator chains these (e.g. feet → inches → cm → meters) so any supported unit can be converted to any other. The international inch is now defined as exactly 2.54 cm, so conversions are consistent worldwide for that definition.

Interpretation & examples

  • Metric (SI) units (m, cm, km) are used globally; imperial/US units (ft, in, mi, yd) are common in the US and some other countries.
  • Example 1: 5 feet = 1.524 meters = 60 inches = 152.4 cm.
  • Example 2: 1 mile = 1.60934 km ≈ 5,280 feet.
  • Example 3: 100 meters = 328.08 feet ≈ 109.36 yards. Useful for track or property.

History & background

The metric system (meter, kilogram, second) was developed in France and is the international standard (SI). The imperial and US customary units (foot, inch, mile) have historical roots in the UK and US. The international inch is now defined as exactly 2.54 cm, tying imperial length to the metric system for precise conversion.

Limitations & safety notes

  • Conversions are exact for the defined factors used here. For surveying or legal purposes, verify which standard (e.g. US survey foot vs international foot) applies in your jurisdiction.
  • This tool does not convert area or volume; use dedicated area/volume converters for those.

Common questions

What units are supported?

Common units include meters, feet, inches, yards, miles, kilometers, and centimeters. Select "from" and "to" from the dropdowns; the conversion uses standard factors (e.g. 1 in = 2.54 cm).

Is this the US or metric definition?

The international inch (exactly 2.54 cm) is used. For US surveying, some jurisdictions use the "survey foot," which differs slightly—verify for legal or surveying use.