Universal Unit Converter

Convert between metric and imperial length units: millimeters, centimeters, meters, inches, feet, miles, and more.

Conversion Type

Value

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Result

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What are Length Units?

Length is the measurement of distance between two points. Different systems use different base units: the metric system uses meters, while the imperial system uses feet and miles.

Metric units: Millimeters (mm), centimeters (cm), meters (m), kilometers (km)
Imperial units: Inches (in), feet (ft), yards (yd), miles (mi)
Conversion factor: 1 meter = 3.28084 feet

How to Convert

Length Conversion Formula

Step 1: Identify conversion factors for both units

Step 2: Convert to base unit (meters)

Step 3: Convert from base unit to target unit

Result = (Input Value / From Unit Factor) × To Unit Factor

Worked Examples

Example 1: Convert 5 meters to feet

Step 1: Use conversion factor

1 meter = 3.28084 feet

Step 2: Multiply

5 × 3.28084 = 16.4042 feet

5 m = 16.4042 ft

Quick Reference

Common Length Conversions

Metric	Imperial
1 cm	0.3937 in
1 m	3.28084 ft
1 km	0.621371 mi
100 m	328.084 ft

Frequently Asked Questions

What is the difference between metric and imperial?

The metric system is based on powers of 10 (meters, grams), while the imperial system uses traditional units (feet, pounds). Most countries use metric.