What this converter does
This unit converter turns a value in one unit into every other unit in the same category — length, mass, temperature, area, volume, speed, digital storage, and time. Pick a category, type a number, and the matching values appear instantly. Nothing is uploaded; the math runs entirely in your browser.
Metric, imperial, and beyond
Each category mixes metric units (meters, kilograms, liters) with imperial and US customary units (feet, pounds, gallons), plus the specialized units people actually search for: nautical miles, carats, hectares, knots, and more. Temperature handles the offset between Celsius, Fahrenheit, Kelvin, and Rankine correctly, not just a simple ratio.
Bits, bytes, and the 1000 vs 1024 question
Digital storage keeps decimal units (kB, MB, GB — powers of 1000) separate from binary units (KiB, MiB, GiB — powers of 1024), so you always know which one you are reading. That distinction is exactly where most quick conversions go wrong.
Controlling precision
Use the precision control to round results to 4, 6, or 10 significant figures, or switch to maximum precision when you need every digit. Swap the two units with one click, copy any result, and the converter remembers your last category and units for next time.