Unit converter
Pick a quantity, then the units to convert between. Conversion factors are the exact defined values, so results round-trip cleanly.
Result165.346697
- One unit the other way
- 0.453592
| Unit | Value |
|---|---|
| Milligram | 75000000 |
| Gram | 75000 |
| Kilogram | 75 |
| Tonne | 0.075 |
| Ounce | 2645.547146 |
| Stone | 11.810478 |
The formula
Each quantity reduces to one base unit, so value × factor(from) ÷ factor(to). Temperature needs an offset as well as a scale, so it has its own pair of functions.
Worked example
75 kg × 1 ÷ 0.45359237 = 165.347 lb. 20 °C × 9/5 + 32 = 68 °F.
How to use it
- 1Change the quantity first; the unit lists follow it.
- 2US and UK gallons are different sizes and both are listed.
- 3Storage units are listed in both decimal (kB) and binary (KiB) forms, because drives and operating systems disagree.
Questions people ask
Why does my 1 TB drive show as 931 GB?
The maker counts 10¹² bytes; the operating system counts in powers of two, where that is 931 GiB. Nothing is missing — the units differ.
Are these factors exact?
The imperial definitions are: one inch is exactly 0.0254 m and one pound exactly 0.45359237 kg. Results are rounded for display only.
Last reviewed: 2026-10-20