Unit Converter: Fast & Simple

Unit Converter is a fast, lightweight unit conversion app that shows results the instant you type — no convert button, no clutter, and no permissions at all. Convert length, weight, temperature, volume, and speed in one clean screen, and see every target unit update in real time. Made for cooking, workouts, online shopping from abroad, homework, and everyday "how many pounds is that?" moments. Why this converter feels different: ⚡ Instant results as you type • Pick a category — length, weight, temperature, volume, or speed • Choose your source unit, enter a value, and every other unit updates live • No convert button, no waiting, no extra taps Favorites for the pairs you use daily • Star any conversion pair (like kg → lb or °C → °F) • Your starred pairs stay pinned at the top for one-tap access • Perfect for the two or three conversions you actually use all the time Recent history, always one tap away • Your last 20 conversions are saved automatically • Tap any entry to run it again instantly • Great for repeating the same recipe or shipping calculations Precision that fits your task • Choose 2, 4, or 6 decimal places in settings • Rough estimates for cooking, fine precision for study or engineering Zero permissions — really Unit Converter requests no permissions at all. No location, no contacts, no storage, not even notifications. Everything runs on your device, works fully offline, and nothing about you is collected by the app. If you're tired of calculator apps that ask for strange permissions, this is the quiet alternative. Also included • Works completely offline — airplane mode friendly • Available in English, Korean, Japanese, and Spanish • Small download, quick launch — open, convert, close Free, with a fair upgrade The app is free and supported by ads (a small banner and an occasional interstitial). If you prefer a completely ad-free experience, a single one-time purchase of $2.99 removes all ads forever — no subscription, no recurring charges. Whether you're doubling a recipe in ounces, checking a package weight in pounds, or converting miles to kilometers for a run, Unit Converter gives you the answer the moment you type it.