R1+R2 Zs Ze Calculator
Calculate R1+R2 or Zs.
Free · Designed for iPad
A simple electrical calculator for calculating Zs from R1+R2 or the other way round.
Calculates R1+R2, Zs or Ze, input two values to calculate the third.
- Calculate: Zs
- Calculate: (R1+R2)
- Calculate: Ze (not recommended)
A quick and easy way to calculate R1+R2 or Zs.
Check your measured R1+R2 or Zs values with this handy R1+R2 calculator or calculate a value from the other two known values to verify actual measurements obtained.
Easily calculate the earth loop impedance (Zs) from the R1+R2 and Ze values, also calculate the R1+R2 value from the Zs and Ze values.
+ Check you measured R1+R2 readings
+ Check your measured Zs readings
+ Validate or verify your Ze (not recommended)
Although this app allows the calculation of the Ze value, the Ze value should not be calculated. The Ze value should be obtained by actual measurement or by inquiry to the regional electric company. It is good practice to directly measure R1+R2 and Zs values rather than calculating them.
How to calculate Zs:
1) Enter the Zs and R1+R2 values.
2) Tap calculate.
How to calculate R1+R2:
1) Enter the Zs and Ze values.
2) Tap calculate.
How to calculate Ze:
The Ze value should not be calculated, instead obtained by direct measurement or by inquiry to the electricity network company.
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27/07/2025 v4.3.7
- UI improvements
The developer, Pro Certs Software Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
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- Location
- Identifiers
- Usage Data
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The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pro Certs Software Ltd
- Size
- 12.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 12.0 or later.
- iPhone
Requires iOS 12.0 or later. - iPad
Requires iPadOS 12.0 or later. - iPod touch
Requires iOS 12.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2011-2025 Pro Certs Software Ltd