The utility app which is available on Google Play can convert feet (ft) and inches (in) together to meters (m), and vice versa.
ft + in to m and vice versa
The clean app can also convert pounds (lb) and ounces (oz) together to kilograms (kg), and vice versa.
lb + oz to kg and vice versa
The full-featured version - Smart Unit Converter Pro
The full-free version - Smart Unit Converter Free/Pure
To find the apps, search with key word, SmartUnitConverterPure, on Google Play.
