Unit Converter Pro

Unit Converter Pro is the most complete offline unit converter for everyday use — covering six essential categories: Length, Weight, Temperature, Speed, Area, and Volume, with 70+ units total and zero internet required.

Type any value and all results update live as you type. Switch between units instantly using the searchable unit picker — no scrolling through endless lists, just type the unit name or symbol and tap to select.

Length conversions include Kilometer, Meter, Mile, Foot, Inch, Nautical Mile and more. Weight supports Kilogram, Gram, Pound, Ounce, Stone, Metric Ton and US Ton. Temperature handles Celsius, Fahrenheit, Kelvin and Rankine with mathematically precise conversion formulas.

Speed conversions cover m/s, km/h, mph, knots, Mach and even Light Speed. Area handles everything from Square Millimeter to Square Mile and Acres. Volume supports Liters, Gallons (US & Imperial), Cups, Fluid Ounces, Cubic Meters and more.

A beautiful custom numpad ensures fast, error-free input on any screen size. Tap the swap button to instantly reverse the conversion direction — the result becomes your new input automatically.

One-tap copy places any result directly onto your clipboard with haptic feedback. Built with Flutter for buttery-smooth 60fps animations and a polished light theme that is easy on the eyes all day long.

No ads, no internet permission, no account required, no in-app purchases — ever. All processing happens locally on your device with full privacy guaranteed.

Perfect for students, engineers, travelers, chefs, athletes, architects, and anyone who works with measurements daily. Install free and start converting in seconds.