Units Converter & Calculator is a utility application designed for unit conversion and physical constant reference. It enables users to convert between more than 200 units across over 30 categories, including weight, temperature, distance, speed, volume, energy, and pressure. The app also includes a library of over 180 physical constants, each with detailed explanations. It is available as a free download on the App Store for iPhone and iPad, requiring iOS 15.6 or later. The latest version, 2026.07.06, was released on July 8, 2026. The application provides real time conversion results as users input values and select units. Conversions are automatically saved to a history log for later reference. The constants library allows users to look up physical constants with supporting details. The app is intended for students, engineers, scientists, and professionals who need quick and accurate unit conversions. Additional browser based tools are available on the developer’s website, including converters for cups to grams, shoe sizes, and a recipe scaler, as well as developer tools for Apple device screen sizes and push notification testing. Units Converter is built with a focus on user privacy. The app processes data on the device wherever possible and does not sell personal data. It may display advertisements through Google AdMob and use anonymous analytics to improve performance. The app’s terms of use and privacy policy are available through provided links. The application is rated by 32 users on the US App Store.