Last updated: April 2026
The Length Converter transforms measurements between 9 different length and distance units: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles. Select your starting unit, enter a value, and instantly see the equivalent in every other unit. This is the tool you need when converting building measurements between metric and imperial, calculating distances for travel planning, converting height from centimeters to feet, or doing science homework with metric units. The primary conversion result is highlighted at the top, and a complete table below shows all 8 other unit conversions at once. Every result has a copy button for quick use. The converter uses precise conversion factors and handles very large and very small numbers with scientific notation when needed.
Choose the unit you are converting from using the From dropdown. Options include millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles.
Type the length or distance value you want to convert. The tool accepts whole numbers, decimals, and very large or small values.
Choose the unit you want to convert to using the To dropdown. The primary conversion result appears in the highlighted box to the right.
Below the main conversion, a grid shows your value converted to every other unit at once. Each result has a copy button for easy use.
Length Converter is the fastest way to convert between length units online. Key advantages include 9 unit options, a complete conversion table, scientific notation support, and instant copy for every result.
One meter equals approximately 3.28084 feet. Conversely, one foot equals 0.3048 meters exactly. This conversion is one of the most common in construction, architecture, and everyday life when switching between the metric and imperial systems.
One mile equals approximately 1.60934 kilometers. One kilometer equals about 0.621371 miles. A quick mental shortcut: multiply miles by 1.6 to get kilometers, or multiply kilometers by 0.6 to get a rough miles estimate.
Divide your height in centimeters by 2.54 to get inches, then divide the inches by 12 to get feet. The remainder is the extra inches. For example, 175 cm divided by 2.54 = 68.9 inches. That is 5 feet and 8.9 inches (since 68.9 / 12 = 5 with a remainder of 8.9). This converter makes it even easier by showing all conversions at once.
A nautical mile equals 1,852 meters or approximately 1.151 regular (statute) miles. It is used in aviation and maritime navigation because one nautical mile corresponds to one minute of latitude on the Earth's surface, making it extremely practical for navigation with charts and maps.
The metric system (millimeters, centimeters, meters, kilometers) is based on powers of 10, making conversions straightforward. The imperial system (inches, feet, yards, miles) uses different conversion factors (12 inches in a foot, 3 feet in a yard, 5,280 feet in a mile). Most countries use metric, while the US primarily uses imperial for everyday measurements.