Unit Converter Pro

Unit Converter Pro is a fast, accurate, and completely free unit converter that works 100% offline — no ads, no account, no data collection.

Convert instantly across 24 categories and 130+ units, including:

📏 Length • ⚖️ Weight • 🌡️ Temperature • 📐 Area • 🧪 Volume • 🏎️ Speed • ⏱️ Time • 🎈 Pressure • ⚡ Energy • 🔋 Power • 💾 Data Storage • 📐 Angle • ⛽ Fuel Economy • 🍳 Cooking • 💱 Currency • 📻 Frequency • 💪 Force • 🔧 Torque • 🧱 Density • 🚰 Flow Rate • 💡 Illuminance • ✨ Luminous Flux • ☢️ Radiation • 🧲 Magnetic Field

WHY YOU'LL LIKE IT

✅ Instant conversion as you type — no "Convert" button required
✅ Works completely offline once installed
✅ Save favorite converters for one-tap access
✅ Automatic conversion history (last 50 conversions)
✅ Swap, reset, copy, and share results in one tap
✅ Light and dark themes, with system preference detection
✅ Clean, fast, distraction-free interface — no ads, ever
✅ Built-in reference tools: SI metric prefix table and scientific constants (speed of light, Planck constant, Avogadro's number, and more)
✅ Measurement guide with common conversion formulas

PRIVACY FIRST

All conversions happen locally on your device. Unit Converter Pro does not collect, store, or transmit any personal data. Your favorites and history are saved only on your device and never leave it.

WHO IT'S FOR

Whether you're a student, engineer, scientist, chef, traveler, or just need to quickly convert kilometers to miles or Celsius to Fahrenheit, Unit Converter Pro gives you accurate results in seconds — even without an internet connection.

Download Unit Converter Pro today and never search "how many X in Y" again.