About Electrical Engineering Pack
A complete pack of 60 Electrical Calculators and 16 Electrical Converters - designed for electrical engineers, electricians, and students. Now includes a Resistor Color Code Calculator and an upgraded Voltage Drop...
A complete pack of 60 Electrical Calculators and 16 Electrical Converters - designed for electrical engineers, electricians, and students. Now includes a Resistor Color Code Calculator and an upgraded Voltage Drop Calculator compliant with NEC/IEEE standards. Electrical Calculator List (60) 1. Resistor Color Code Calculator (New) 2. Transformer Calculator (Step-Up and Step-Down Voltage & Current Calculations) 3. Voltage Calculator 4. Current Calculator 5. Resistance Calculator 6. Power Calculator 7. Voltage Drop Calculator (Updated for NEC/IEEE Standards) 8. kVA to Amps (Single Phase) 9. kVA to Amps (Three Phase) 10. Amps to kVA (Single Phase) 11. Amps to kVA (Three Phase) 12. Single Phase Power Calculator 13. Three Phase Power Calculator 14. Single Phase Current Calculator 15. Three Phase Current Calculator 16. DC Horsepower 17. Single Phase Horsepower 18. Three Phase Horsepower 19. DC Current (HP) Calculator 20. Single Phase Current (HP) Calculator 21. Three Phase Current (HP) Calculator 22. Efficiency (DC) Calculator 23. Efficiency (Single Phase) Calculator 24. Efficiency (Three Phase) Calculator 25. Power Factor (Single Phase) Calculator 26. Power Factor (Three Phase) Calculator 27. Luminous Intensity Calculator 28. Luminous Flux Calculator 29. Solid Angle Calculator 30. Energy Cost Calculator 31. Energy Stored (Resistance) Calculator 32. Energy Stored (Inductance) Calculator 33. Energy Stored (Capacitance) Calculator 34. Star to Delta Conversion 35. Delta to Star Conversion 36. Inductive Reactance Calculator 37. Capacitive Reactance Calculator 38. Resonant Frequency Calculator 39. Inductor Sizing Formula 40. Capacitor Sizing Formula 41. Resistance (Series) Calculator 42. Resistance (Parallel) Calculator 43. Inductance (Series) Calculator 44. Inductance (Parallel) Calculator 45. Capacitance (Series) Calculator 46. Capacitance (Parallel) Calculator 47. Unknown Resistance (Series) Calculator 48. Unknown Resistance (Parallel) Calculator 49. Unknown Capacitance (Series) Calculator 50. Unknown Capacitance (Parallel) Calculator 51. Neutral Current (3-Phase Unbalanced Loads) 52. Characteristic Impedance (Parallel) 53. Characteristic Impedance (Coaxial) Electrical Converter Overview The Electrical Converter translates between multiple electrical units and supports both SI and USCS systems. Includes 16 Categories, 173 Units, and over 2,100 conversions. Converter Categories (16): 1. Field Strength 2. Electric Potential 3. Resistance 4. Resistivity 5. Conductance 6. Conductivity 7. Capacitance 8. Inductance 9. Charge 10. Linear Charge Density 11. Surface Charge Density 12. Volume Charge Density 13. Current 14. Linear Current Density 15. Surface Current Density 16. Power Smart Calculation Behavior Calculations update automatically when users change: . Input values . Input units . Output units
Version History • Added Resistor Color Code Calculations. • Updated Voltage Drop Calculations to comply with NEC/IEEE standards. 10.3 11/12/2025 - minor update to fix an issue, where the app prompts users to update repeatedly. 10.2 04/15/2023 - Formulas are shown in a more readable format, for easy understanding. - Improved UI with better performance 10.1 02/23/2023 New wire types, added to the Voltage Drop Calculator. 9.0 10/30/2021 - Quick update to fix an issue, which causes the App to crash in iPads. 8.6 12/04/2020 updated for iOS 14 8.5 11/18/2020 new calculations added : Characteristic Impedance (Parallel) Characteristic Impedance (Coaxial) Transformer Calculator 8.0 02/10/2020 - 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) 7.0 01/19/2018 - "Voltage Drop Calculator" has been included to the already existing 48 Electrical Calculators. 6.1 02/12/2017 - ready for iOS 10 6.0 10/01/2016 - Few errors cleared in HP Calculators. - Calculations for UnKnown Resistance & UnKnown Capacitance are added. - Calculations for kVA to amps & amps to kVA are added. 5.1 09/18/2015 - Newly designed User Interface in iPads 5.0 08/16/2014 - errors fixed. 4.1 07/15/2014 - Improved User Interface 4.0 06/27/2014 - Option to search for your favorite calculator - Calculation for neutral current in unbalanced loads added. 3.2 09/18/2013 - few glitches in tabs cleared 3.0.1 07/19/2013 - Calculators and Converters in separate tabs for your iPad - Switch from Electrical Calculators and Converters more easily with tabs in your Electrical Engineering Pack. 3.0 06/27/2013 - Few Errors Cleared. 2.1 04/29/2013 - Works on both iPad and iPhone 2.0 01/11/2013 - Ready for your iPhone5 1.2 12/20/2012 . Uses "."(period) or ","(comma) as decimal mark to meet the US and European formats... . Easy keypad handling. . Available in English,French,German & Italian Languages... 1.1 10/08/2012 1.0 03/01/2012
Previous Versions
Here you can find the changelog of Electrical Engineering Pack since it was posted on our website on 2016-10-03 19:44:38.
The latest version is 10.3 and it was updated on 2026-06-22 22:03:44. See below the changes in each version.
Electrical Engineering Pack version 10.3
Updated At: 2026-05-29
Changes: Version History • Added Resistor Color Code Calculations.
• Updated Voltage Drop Calculations to comply with NEC/IEEE standards. 10.3 11/12/2025 - minor update to fix an issue, where the app prompts users to update repeatedly. 10.2 04/15/2023 - Formulas are shown in a more readable format, for easy understanding.
- Improved UI with better performance 10.1 02/23/2023 New wire types, added to the Voltage Drop Calculator. 9.0 10/30/2021 - Quick update to fix an issue, which causes the App to crash in iPads. 8.6 12/04/2020 updated for iOS 14 8.5 11/18/2020 new calculations added :
Characteristic Impedance (Parallel)
Characteristic Impedance (Coaxial)
Transformer Calculator 8.0 02/10/2020 - 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) 7.0 01/19/2018 - "Voltage Drop Calculator" has been included to the already existing 48 Electrical Calculators. 6.1 02/12/2017 - ready for iOS 10 6.0 10/01/2016 - Few errors cleared in HP Calculators.
- Calculations for UnKnown Resistance & UnKnown Capacitance are added.
- Calculations for kVA to amps & amps to kVA are added. 5.1 09/18/2015 - Newly designed User Interface in iPads 5.0 08/16/2014 - errors fixed. 4.1 07/15/2014 - Improved User Interface 4.0 06/27/2014 - Option to search for your favorite calculator
- Calculation for neutral current in unbalanced loads added. 3.2 09/18/2013 - few glitches in tabs cleared 3.0.1 07/19/2013 - Calculators and Converters in separate tabs for your iPad
- Switch from Electrical Calculators and Converters more easily with tabs in your Electrical Engineering Pack. 3.0 06/27/2013 - Few Errors Cleared. 2.1 04/29/2013 - Works on both iPad and iPhone 2.0 01/11/2013 - Ready for your iPhone5 1.2 12/20/2012 . Uses "."(period) or ","(comma) as decimal mark to meet the US and European formats...
. Easy keypad handling.
. Available in English,French,German & Italian Languages... 1.1 10/08/2012 1.0 03/01/2012
Electrical Engineering Pack version 10.3
Updated At: 2025-11-12
Changes: • Added Resistor Color Code Calculations.
• Updated Voltage Drop Calculations to comply with NEC/IEEE standards.
Electrical Engineering Pack version 10.2
Updated At: 2023-04-15
Changes: Apr 15, 2023
Version 10.2
- minor update to fix an issue, where the app prompts users to update repeatedly.
Electrical Engineering Pack version 10.1
Updated At: 2023-02-23
Changes: Feb 23, 2023
Version 10.1
- Formulas are shown in a more readable format, for easy understanding.
- Improved UI with better performance
Electrical Engineering Pack version 9.0
Updated At: 2021-10-30
Changes: Oct 30, 2021 Version 9.0
New wire types, added to the Voltage Drop Calculator.
Electrical Engineering Pack version 8.6
Updated At: 2020-12-04
Changes: Dec 4, 2020 Version 8.6
- Quick update to fix an issue, which causes the App to crash in iPads.
Electrical Engineering Pack version 8.5
Updated At: 2020-11-18
Changes: Nov 18, 2020 Version 8.5
updated for iOS 14
Electrical Engineering Pack version 8.0
Updated At: 2020-02-10
Changes: Feb 10, 2020 Version 8.0
new calculations added :
Characteristic Impedance (Parallel)
Characteristic Impedance (Coaxial)
Transformer Calculator
Electrical Engineering Pack version 8.0
Updated At: 2020-02-10
Changes: 10 Feb 2020 Version 8.0
new calculations added :
Characteristic Impedance (Parallel)
Characteristic Impedance (Coaxial)
Transformer Calculator
Electrical Engineering Pack version 6.0
Updated At: 2012-03-01
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