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.