R1+R2 Zs Ze Calculator is a free Android app developed by Pro Certs Software Ltd under the category of Utilities & Tools. It serves as a handy tool for electrical professionals to calculate earth loop impedance (Zs) from R1+R2 and Ze values, as well as R1+R2 values from Zs and Ze values.

The app allows users to enter any two known values and calculate the other. It offers features to calculate and convert to or from any of the following values: Zs, R1+R2, and Ze. The app is designed to check and verify measured values or calculate a value from the other two known values.

Although the app allows the calculation of Ze, it is recommended to obtain the Ze value through actual measurement or inquiry to the regional electric company for best practice.

To use the app, simply enter any two values and press calculate. The app is part of the full collection of electrical apps for Android available in the Play Store.