Convertly+ Unit Converter

Convertly+ converts units in an instant, from length to radioactivity, with a built-in calculator, favorites and history. Everything works offline on your iPhone or iPad.

Convert
• A huge range of units in categories such as length, area, volume, mass, time, speed, force, energy, power, pressure and temperature
• Made for engineering and science, too: angle, frequency, voltage, current, resistance, data size, data rate, decibels (dBm/dBW), density, torque, radioactivity, radiation dose, illuminance and more
• Search categories and units
• Scientific notation for very large and very small values

Calculator
• Built-in calculator with parentheses and percent
• Take the result straight into the conversion

Favorites & History
• Save your frequent conversions as favorites
• Local history that stays on your device
• Copy results with or without the unit

Customize
• Adjustable decimal places and thousands separators
• Light and dark mode with several dark themes, such as OLED black
• Haptic feedback
• Built-in tour to get you started quickly

Privacy
• Works completely offline
• No ads, no tracking, no accounts
• Optional in-app feedback is only sent when you submit it yourself

Offline. No ads. No tracking.