Unit Converter
Convert between units in twelve categories - length, weight, temperature, area, volume, data, speed, time, energy, pressure, angle and frequency.
Updated September 2026 · Written and verified by Akash Pandey
Unit Converter
How to use the unit converter
- Choose a category (length, weight, temperature and so on).
- Enter a value and pick the source unit.
- The destination converts instantly as you change the target unit.
- Use the ⇄ swap button to reverse the conversion.
Each category carries the units people actually use - from inches, feet and meters to gigabytes, barrels and newtons - with up to nine significant digits of precision.
Frequently asked questions
Which categories are included?
Length, mass/weight, temperature, area, volume (liquid and dry), speed, time, data storage, energy, pressure, angle and frequency.
How accurate are the conversions?
Conversions use exact defined factors (SI base units) with double-precision arithmetic and up to 9 significant digits shown. Anything beyond that is display rounding.
Does temperature conversion work correctly?
Yes - Celsius, Fahrenheit and Kelvin use their proper affine formulas (including the offset), not a simple multiplier.
Can I convert data storage?
Yes - bytes through terabytes, using binary units (GiB) for clarity, with MiB/MB style labels so you know which definition a unit uses.
Is it private and offline?
Yes - every factor is hard-coded in the page, so the converter works with zero network access.
Which unit categories are supported?
The converter supports length, weight/mass, temperature, area, volume, speed, time, data storage, energy, and pressure.
How accurate are the conversion factors?
Conversions use exact NIST and BIPM definitions (e.g. 1 inch = 25.4 mm exactly, 1 pound = 0.45359237 kg exactly).
Can I quickly swap the "From" and "To" units?
Yes. Clicking the swap button instantly reverses the conversion direction while keeping the calculated amount.