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Category	What's inside
Unit Conversions	kg↔lbs, cm↔inches, km↔miles, °C↔°F, grams↔ounces, liters↔gallons and more
Currency Conversions	USD, EUR, GBP → TRY and major pairs, live-refreshed rates
Age by Birth Year	"Born in 1920–2026 — how old am I?" answers
Percentage Answers	What is X% of Y — with discount math
Roman Numerals	1-100, round numbers to 3000, and every year 1900-2030
Numbers in Words	How to spell numbers — with check and currency formats

All answers are computed at build time and served as pure static HTML — nothing is fetched from our server at runtime. Currency pages additionally refresh the live rate directly in your browser from a public API.