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From the blog
Guides on finance, health, and productivity.
Horsepower to Kilowatts: What Car Specs Actually Mean
Car specifications list power in horsepower, kilowatts, or both depending on the market. Here's the exact conversion and why it matters.
Converting Between Seconds, Minutes, Hours and Days
Time conversion seems obvious until you need to convert across several units at once. Here's how to do it cleanly, with a worked example.
Calories vs. Joules: What's the Actual Difference?
Nutrition labels use Calories, science uses joules. Here's how the two energy units relate and why food 'Calories' aren't quite what they sound like.