About Electrical Calculator lite
Trusted by over 15,000 users worldwide, the Electrical Calculator App is your all-in-one solution for electrical engineering, wiring, and circuit analysis. Designed for engineers, electricians, students, and hobbyists,...
Trusted by over 15,000 users worldwide, the Electrical Calculator App is your all-in-one solution for electrical engineering, wiring, and circuit analysis. Designed for engineers, electricians, students, and hobbyists, this app offers a wide range of calculators to handle everything from basic Ohm’s Law to complex impedance and RLC circuits. Available Calculations: Basic Electrical Calculators: . Resistor Color Code (Ω) . Voltage Calculator (Ω) . Current Calculator (Ω) . Resistance Calculator (Ω) . Power Calculator (Ω) . Voltage Drop Calculations . Wire Size Selector Impedance Calculations (R-L-C): . Impedance Calculators R-L-C . R and L in Series . R and L in Parallel . R and C in Series . R and C in Parallel . L and C in Series . L and C in Parallel . R, L and C in Series . R, L and C in Parallel Power and Current Calculators: . Single Phase Power . Three Phase Power . Single Phase Current . Three Phase Current . kVA to Amps (Single Phase) . kVA to Amps (Three Phase) . Amps to kVA (Single Phase) . Amps to kVA (Three Phase) Transformer Calculations: . Transformer Calculator (Current) . Transformer Calculator (Voltage) Horsepower and Current (HP): . DC Horsepower . Single Phase Horsepower . Three Phase Horsepower . DC Current (HP) . Single Phase Current (HP) . Three Phase Current (HP) Efficiency and Power Factor: . Efficiency (DC) . Efficiency (Single Phase) . Efficiency (Three Phase) . Power Factor (Single Phase) . Power Factor (Three Phase) Lighting Calculations: . Luminous Intensity (Light Calculation) . Luminous Flux (Light Calculation) . Solid Angle (Light Calculation) Energy Storage and Cost Calculations: . Energy Cost Calculation . Energy Storage (Resistance) . Energy Storage (Inductance) . Energy Storage (Capacitance) Star-Delta Conversion: . Star to Delta Conversion . Delta to Star Conversion Reactance and Frequency Calculators: . Inductive Reactance . Capacitive Reactance . Resonant Frequency . Inductor Sizing Equation . Capacitor Sizing Equation Series and Parallel Calculations: . Resistance (Series) . Resistance (Parallel) . Inductance (Series) . Inductance (Parallel) . Capacitance (Series) . Capacitance (Parallel) . Unknown Resistance (Series) . Unknown Resistance (Parallel) . Unknown Capacitance (Series) . Unknown Capacitance (Parallel) Other Tools: . DC Generator Electrical Unit Converters: . Electrical Converter . Field Strength . Electrical Potential . Resistance . Resistivity . Conductance . Conductivity . Capacitance . Inductance . Charge . Linear Charge Density . Surface Charge Density . Volume Charge Density . Current . Linear Current Density . Surface Current Density . Power Whether you’re troubleshooting, designing, learning, or estimating, the Electrical Calculator App provides accurate, real-time results to support your electrical work. Download now and enhance your productivity with the most complete electrical calculator toolkit on the App Store.
Version History • Find calculators faster — new category chips group all 60+ calculators by purpose • Bug fixes and improvements 10.0 Jul 15 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.8 Jun 8 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.7 Jun 3 Performance improvements, refined Pro paywall, and better user experience — update now. 9.6 Apr 30 • Fixed an issue where wire size calculation results were not displayed properly in dark mode. 9.5 Mar 23 Added support for iOS 26. Added Resistor Color Code. 9.4 10/28/2025 • Fixed crash in certain voltage drop calculations • Added support for voltage divider calculations 9.3 08/08/2025 Quick fix! We’ve corrected an error in the wire size calculations. 9.2 08/01/2025 Fixed an issue affecting iPad users. The app should now work smoothly on all iPads. 9.1 06/25/2025 • Updated for iOS 18 compatibility • Added new calculations to the Wire Size Selector • Introduced a new feature to share your calculations with others 9.0 04/11/2025 - quick update to fix an issue, with electrical converters. 8.1 04/18/2024 new calculations added : DC Generator Calculations Transformer Calculations All new user interface for better performance. 8.0 04/10/2024 - minor update to fix an issue, with popups. 7.4 03/05/2023 - Formulas are presented in a more readable format, for better understanding. - Improved UI with better performance. 7.3 02/28/2023 fixed an error with the French localization 7.2 01/18/2022 Few bug fixes and UI improvements. 7.1 06/24/2021 - updated for iOS 14 - in-App purchase to unlock all calculators made easy. 7.0 01/06/2021 new calculators added to the App - Characteristic Impedance (parallel) Characteristic Impedance (coaxial) 6.0 08/23/2019 - minor updates & bug fixes 5.7 08/09/2019 fixed an issue , where some users were not able to complete the in - App purchases. 5.6 08/02/2019 Fixed an issue, where users were not able to enter values for the calculations. 5.5 06/01/2019 Now, you can subscribe to unlock the Calculators and Converters 5.4 05/17/2019 Now, share the calculations done with the App, in a customised screen seize. 5.3 03/22/2019 - more wire sizes added to Voltage drop calculator 5.2 12/20/2018 Now, you can share the calculator's screen 5.1 08/23/2018
Previous Versions
Here you can find the changelog of Electrical Calculator lite since it was posted on our website on 2016-09-25 20:33:12.
The latest version is 10.0 and it was updated on 2026-10-06 15:44:27. See below the changes in each version.
Electrical Calculator lite version 10.0
Updated At: 2026-10-06
Changes: Version History • Find calculators faster — new category chips group all 60+ calculators by purpose
• Bug fixes and improvements 10.0 Jul 15 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.8 Jun 8 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.7 Jun 3 Performance improvements, refined Pro paywall, and better user experience — update now. 9.6 Apr 30 • Fixed an issue where wire size calculation results were not displayed properly in dark mode. 9.5 Mar 23 Added support for iOS 26.
Added Resistor Color Code. 9.4 10/28/2025 • Fixed crash in certain voltage drop calculations
• Added support for voltage divider calculations 9.3 08/08/2025 Quick fix! We’ve corrected an error in the wire size calculations. 9.2 08/01/2025 Fixed an issue affecting iPad users. The app should now work smoothly on all iPads. 9.1 06/25/2025 • Updated for iOS 18 compatibility
• Added new calculations to the Wire Size Selector
• Introduced a new feature to share your calculations with others 9.0 04/11/2025 - quick update to fix an issue, with electrical converters. 8.1 04/18/2024 new calculations added :
DC Generator Calculations
Transformer Calculations
All new user interface for better performance. 8.0 04/10/2024 - minor update to fix an issue, with popups. 7.4 03/05/2023 - Formulas are presented in a more readable format, for better understanding.
- Improved UI with better performance. 7.3 02/28/2023 fixed an error with the French localization 7.2 01/18/2022 Few bug fixes and UI improvements. 7.1 06/24/2021 - updated for iOS 14
- in-App purchase to unlock all calculators made easy. 7.0 01/06/2021 new calculators added to the App -
Characteristic Impedance (parallel)
Characteristic Impedance (coaxial) 6.0 08/23/2019 - minor updates & bug fixes 5.7 08/09/2019 fixed an issue , where some users were not able to complete the in - App purchases. 5.6 08/02/2019 Fixed an issue, where users were not able to enter values for the calculations. 5.5 06/01/2019 Now, you can subscribe to unlock the Calculators and Converters 5.4 05/17/2019 Now, share the calculations done with the App, in a customised screen seize. 5.3 03/22/2019 - more wire sizes added to Voltage drop calculator 5.2 12/20/2018 Now, you can share the calculator's screen 5.1 08/23/2018
Electrical Calculator lite version 10.0
Updated At: 2026-07-18
Changes: Version History • Find calculators faster — new category chips group all 60+ calculators by purpose
• Bug fixes and improvements 10.0 2d ago Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.8 Jun 8 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.7 Jun 3 Performance improvements, refined Pro paywall, and better user experience — update now. 9.6 Apr 30 • Fixed an issue where wire size calculation results were not displayed properly in dark mode. 9.5 Mar 23 Added support for iOS 26.
Added Resistor Color Code. 9.4 10/28/2025 • Fixed crash in certain voltage drop calculations
• Added support for voltage divider calculations 9.3 08/08/2025 Quick fix! We’ve corrected an error in the wire size calculations. 9.2 08/01/2025 Fixed an issue affecting iPad users. The app should now work smoothly on all iPads. 9.1 06/25/2025 • Updated for iOS 18 compatibility
• Added new calculations to the Wire Size Selector
• Introduced a new feature to share your calculations with others 9.0 04/11/2025 - quick update to fix an issue, with electrical converters. 8.1 04/18/2024 new calculations added :
DC Generator Calculations
Transformer Calculations
All new user interface for better performance. 8.0 04/10/2024 - minor update to fix an issue, with popups. 7.4 03/05/2023 - Formulas are presented in a more readable format, for better understanding.
- Improved UI with better performance. 7.3 02/28/2023 fixed an error with the French localization 7.2 01/18/2022 Few bug fixes and UI improvements. 7.1 06/24/2021 - updated for iOS 14
- in-App purchase to unlock all calculators made easy. 7.0 01/06/2021 new calculators added to the App -
Characteristic Impedance (parallel)
Characteristic Impedance (coaxial) 6.0 08/23/2019 - minor updates & bug fixes 5.7 08/09/2019 fixed an issue , where some users were not able to complete the in - App purchases. 5.6 08/02/2019 Fixed an issue, where users were not able to enter values for the calculations. 5.5 06/01/2019 Now, you can subscribe to unlock the Calculators and Converters 5.4 05/17/2019 Now, share the calculations done with the App, in a customised screen seize. 5.3 03/22/2019 - more wire sizes added to Voltage drop calculator 5.2 12/20/2018 Now, you can share the calculator's screen 5.1 08/23/2018
Electrical Calculator lite version 9.8
Updated At: 2026-06-30
Changes: Version History Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.8 Jun 8 Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.7 Jun 3 Performance improvements, refined Pro paywall, and better user experience — update now. 9.6 Apr 30 • Fixed an issue where wire size calculation results were not displayed properly in dark mode. 9.5 Mar 23 Added support for iOS 26.
Added Resistor Color Code. 9.4 10/28/2025 • Fixed crash in certain voltage drop calculations
• Added support for voltage divider calculations 9.3 08/08/2025 Quick fix! We’ve corrected an error in the wire size calculations. 9.2 08/01/2025 Fixed an issue affecting iPad users. The app should now work smoothly on all iPads. 9.1 06/25/2025 • Updated for iOS 18 compatibility
• Added new calculations to the Wire Size Selector
• Introduced a new feature to share your calculations with others 9.0 04/11/2025 - quick update to fix an issue, with electrical converters. 8.1 04/18/2024 new calculations added :
DC Generator Calculations
Transformer Calculations
All new user interface for better performance. 8.0 04/10/2024 - minor update to fix an issue, with popups. 7.4 03/05/2023 - Formulas are presented in a more readable format, for better understanding.
- Improved UI with better performance. 7.3 02/28/2023 fixed an error with the French localization 7.2 01/18/2022 Few bug fixes and UI improvements. 7.1 06/24/2021 - updated for iOS 14
- in-App purchase to unlock all calculators made easy. 7.0 01/06/2021 new calculators added to the App -
Characteristic Impedance (parallel)
Characteristic Impedance (coaxial) 6.0 08/23/2019 - minor updates & bug fixes 5.7 08/09/2019 fixed an issue , where some users were not able to complete the in - App purchases. 5.6 08/02/2019 Fixed an issue, where users were not able to enter values for the calculations. 5.5 06/01/2019 Now, you can subscribe to unlock the Calculators and Converters 5.4 05/17/2019 Now, share the calculations done with the App, in a customised screen seize. 5.3 03/22/2019 - more wire sizes added to Voltage drop calculator 5.2 12/20/2018 Now, you can share the calculator's screen 5.1 08/23/2018 - optimised for your new iPhone X
- optimised capacitive & inductive reactance calculators, to accept input frequency in (mega Hertz)
- Resonant frequency calculator optimised to show output in (mega hertz) 5.0 01/09/2018
Electrical Calculator lite version 9.7
Updated At: 2026-06-05
Changes: Version History Minor improvements and bug fixes to keep your calculations smooth and reliable. 9.7 2d ago Performance improvements, refined Pro paywall, and better user experience — update now. 9.6 Apr 30 • Fixed an issue where wire size calculation results were not displayed properly in dark mode. 9.5 Mar 23 Added support for iOS 26.
Added Resistor Color Code. 9.4 10/28/2025 • Fixed crash in certain voltage drop calculations
• Added support for voltage divider calculations 9.3 08/08/2025 Quick fix! We’ve corrected an error in the wire size calculations. 9.2 08/01/2025 Fixed an issue affecting iPad users. The app should now work smoothly on all iPads. 9.1 06/25/2025 • Updated for iOS 18 compatibility
• Added new calculations to the Wire Size Selector
• Introduced a new feature to share your calculations with others 9.0 04/11/2025 - quick update to fix an issue, with electrical converters. 8.1 04/18/2024 new calculations added :
DC Generator Calculations
Transformer Calculations
All new user interface for better performance. 8.0 04/10/2024 - minor update to fix an issue, with popups. 7.4 03/05/2023 - Formulas are presented in a more readable format, for better understanding.
- Improved UI with better performance. 7.3 02/28/2023 fixed an error with the French localization 7.2 01/18/2022 Few bug fixes and UI improvements. 7.1 06/24/2021 - updated for iOS 14
- in-App purchase to unlock all calculators made easy. 7.0 01/06/2021 new calculators added to the App -
Characteristic Impedance (parallel)
Characteristic Impedance (coaxial) 6.0 08/23/2019 - minor updates & bug fixes 5.7 08/09/2019 fixed an issue , where some users were not able to complete the in - App purchases. 5.6 08/02/2019 Fixed an issue, where users were not able to enter values for the calculations. 5.5 06/01/2019 Now, you can subscribe to unlock the Calculators and Converters 5.4 05/17/2019 Now, share the calculations done with the App, in a customised screen seize. 5.3 03/22/2019 - more wire sizes added to Voltage drop calculator 5.2 12/20/2018 Now, you can share the calculator's screen 5.1 08/23/2018 - optimised for your new iPhone X
- optimised capacitive & inductive reactance calculators, to accept input frequency in (mega Hertz)
- Resonant frequency calculator optimised to show output in (mega hertz) 5.0 01/09/2018 - ready for iPhone X
- an issue with in-App purchase has been cleared. 4.1 11/21/2017
Electrical Calculator lite version 9.4
Updated At: 2025-10-28
Changes: Added support for iOS 26.
Added Resistor Color Code.
Electrical Calculator lite version -
Updated At: 2025-10-01
Disclaimer
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