Unit Converter - All in One

Unit Converter All in One gives you fast, accurate conversions across 75 categories, plus a set of everyday tools: scientific calculator, currency and crypto rates, compass, ruler, bubble level, timer, world clock and loan EMI calculator. Measured in-app: 650+ units.

CONVERTERS
- Length, weight, temperature, volume, area, speed, time, pressure, energy, power, force, torque, frequency, data storage, bandwidth, fuel economy and more
- Electrical: current, voltage, resistance, capacitance, inductance, magnetic field
- Science: density, concentration, radioactivity, dose, illuminance, sound, angle, acceleration
- Everyday: cooking and kitchen measures, clothing sizes, paper sizes, typography, resolution, BMI, blood sugar, discount, age and date difference
- Drinks: coffee ratio, beer ABV, Brix, wine bottles, spirit measures
- Historical and regional: Roman, ancient length and weight, nautical, old imperial, Japanese, Chinese, Indian, troy and apothecary weights, biblical units
- Currency with live exchange rates and crypto prices (needs internet); all other converters work offline

HOW IT WORKS
- Results update as you type, no convert button
- Swap units with one tap, copy or share the result
- Scan a number with your camera and convert it instantly
- Conversion history and usage stats
- Home screen widget for quick conversions

SMART TOOLS
- Scientific calculator
- Compass with cardinal directions
- Ruler in cm and inches
- Bubble level to check surfaces
- Stopwatch with laps, countdown timer with presets
- World clock for time zones
- Loan EMI calculator and compound interest calculator
- Date calculator for age and date differences

EXTRAS
- Daily challenges, streaks, levels and achievements to make learning units fun
- Fun facts and real conversion examples in every category
- Multiple languages and light and dark themes

FREE
Unit Converter All in One is free to use and supported by ads. There is no subscription.

Made for students, engineers, cooks, travellers, traders and anyone who needs the right number fast.

Recent changes:
📷 Scan and convert units instantly using your camera
⚡ Faster performance and smoother experience
🛠️ Bug fixes and stability improvements