Unit Converter

Instantly convert between hundreds of units across 12 categories

Length

Meter, Kilometer, Mile, Foot, Inch and more

From

1 m = 0.001 km

Common Conversions

Value	From	→	Result	To

How to Use

Select a Category Choose from 12 unit categories using the tabs above the converter.

Pick Your Units Select the source unit from the "From" dropdown and the target from "To".

Enter a Value Type any number in either input — results update instantly in real time.

Swap Directions Click the ⇄ button to reverse the conversion without re-selecting units.

Available Categories

Length

Weight / Mass

Temperature

Area

Volume

Speed

Time

Data Storage

Energy

Pressure

Angle

Frequency

Frequently Asked Questions

How accurate are the conversions?

All conversions use high-precision multipliers with up to 15 significant digits, matching IEEE 754 double-precision floating point. Results are rounded to 8 decimal places for display.

How does temperature conversion work?

Temperature uses non-linear formulas rather than simple multiplication. For example: °F = (°C × 9/5) + 32, and K = °C + 273.15. The converter handles all these automatically.

Can I convert in both directions?

Yes — both input fields are editable. Typing in either field recalculates the other in real time. The swap button also lets you reverse the conversion with one click.

What does the quick reference table show?

The table displays common reference conversions for the current category, helping you understand the scale of different units at a glance.

What is the difference between a US fluid ounce and an imperial fluid ounce?

A US fluid ounce is approximately 29.5735 mL, while an imperial fluid ounce (UK) is approximately 28.4131 mL. They differ by about 4%. This converter uses the US fluid ounce for "fl oz".

What is a Megabyte vs a Mebibyte?

A Megabyte (MB) = 1,000,000 bytes (decimal, SI). A Mebibyte (MiB) = 1,048,576 bytes (binary, IEC). This converter uses the decimal (SI) system where 1 KB = 1,000 bytes.