Guides

Long-form, hand-written articles about units, measurement systems, and the small cultural quirks that make conversion harder than it looks. The first batch is in production and will land here through Phase 3 of the project roadmap.

Planned guides

1. SI base units explained: the seven that define everything else
   Why kilograms got redefined in 2019 and what stayed the same.
2. Why the US still uses imperial — and where it really hurts
   A short history of NASA losing a Mars probe to a unit mismatch, and what that says about the rest of us.
3. Cooking conversions you actually need
   The cup, teaspoon, and fluid ounce that differ between US and UK recipes.
4. Body weight conversions: kg, lb, stone
   Why the UK weighs people in stones, why the US uses pounds with one decimal, and how to do the math at the doctor.
5. Temperature: Celsius, Fahrenheit, Kelvin
   When to use Kelvin (almost never in daily life — but sometimes), and the trick to converting in your head.
6. Data sizes: KB vs KiB and why your hard drive looks smaller
   The 1000-vs-1024 fight that the storage industry quietly won.
7. Speed limits around the world: mph vs km/h
   Why a "60" sign means very different things in Texas and in Berlin.
8. Why metric prefixes go in steps of 1000 (mostly)
   The exceptions are weirder than the rule.
9. Imperial pints are not US pints
   20% more beer in a UK pint — but the same word.
10. Land area: acres, hectares, 평 (Korean)
    The unit a Korean real-estate listing uses, and how it converts.

In the meantime

Browse all unit categories to see what conversions are coming, or read about the project to understand where it fits among other unit converters.