


15+ similar apps compared and reviewed
Looking for something like OPie Unit Converter? We've analyzed 15+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.
















Easily convert units across five categories like angle, energy, length, pressure, and temperature. This offline tool includes a calculator and allows you to export conversion data via text.


This utility app offers a powerful calculator and a comprehensive unit and currency converter. Customize your display by selecting specific units and categories, and perform conversions instantly with its clean interface. It supports over 500 units across 29 categories, including 161 currencies.


Easily convert between over 1600 units of measurement across 75 categories, including custom units and complex calculations. Supports offline mode and offers a convenient history of your conversions.


Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.


Easily convert between over 1000 units across 17 categories, including currency with live rates. Save frequent conversions and access them quickly via a widget. Enjoy fun facts related to units while you convert.


This tool offers fast and accurate conversions across 14 physical unit categories, supporting metric, imperial, and traditional Chinese units. Customize display styles for a personalized experience. An optional VIP subscription removes ads and offers ad-free access.


Easily convert between various units of measurement across 15 categories, including length, mass, volume, speed, and temperature. Offers a premium subscription for advanced features and an ad-free experience.