Convert between metric, imperial, and other length units instantly. From millimeters to light years, get accurate conversions with detailed explanations and conversion history.
Base unit of length in SI system
12 inches
The metric system is based on powers of 10, making conversions straightforward. The meter is the base unit.
The imperial system is primarily used in the United States and has historical origins.
Some units are used for specific purposes or very large distances.
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Real-time calculations as you type with high precision results
Support for metric, imperial, and specialized measurement units
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Our converter uses precise conversion factors and can display results up to 8 decimal places. For scientific notation, we use exponential format for very large or small numbers.
We support metric units (mm, cm, m, km), imperial units (in, ft, yd, mi), and specialized units like nautical miles, light years, and astronomical units.
Select "ft" as your input unit and "m" as your output unit, then enter your value. The conversion factor is 1 foot = 0.3048 meters.
Yes! Click the copy button next to any result to copy it to your clipboard. You can also save conversions to your history for later reference.