Easily calculate and convert electrical values like kVA, kW, Amps, Volts, and Power Factor. Supports both single and three-phase calculations for engineers working with power systems.




249+ iOS apps curated and reviewed
Looking for free kva calculator apps? 17 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free was $0.99 | 4.4★ (11) | Yes | No | Aug 2026 | |
| 2 | Free | 4.8★ (47) | Yes | Yes | Aug 2026 | |
| 3 | $2.99 | — | No | No | Jul 2026 | |
| 4 | Free | 4.6★ (574) | Yes | Yes | Aug 2026 | |
| 5 | $1.99 | — | No | No | May 2026 | |
| 6 | Free | 4.5★ (2) | No | No | May 2026 | |
| 7 | Free | 4.9★ (409K) | Yes | No | Aug 2026 | |
| 8 | Free | 4.7★ (1.3K) | Yes | Yes | Aug 2026 |




Easily calculate and convert electrical values like kVA, kW, Amps, Volts, and Power Factor. Supports both single and three-phase calculations for engineers working with power systems.






This app simplifies transformer calculations for engineers and students. It accurately computes primary and secondary currents, turns ratios, and secondary voltages based on user inputs for transformer ratings and winding turns.








This comprehensive tool offers over 60 calculators and 16 converters for electrical engineering, wiring, and circuit analysis. It supports engineers, electricians, students, and hobbyists with calculations ranging from basic Ohm's Law to complex RLC circuits and power conversions.




This app provides a straightforward calculator designed for the electrical industry, offering tools for power and lighting calculations. It helps users determine generator and UPS requirements, convert units, and calculate fuel consumption. Suitable for both professionals and casual users needing electrical calculations.


This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.


This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.




This app provides precise mathematical and scientific calculations for various needs. It helps users calculate generator and UPS requirements, convert lumens to watts, and estimate generator fuel consumption. It's designed for students, professionals, and anyone needing accurate computations.


A simple, neat, and brilliant calculator that displays entire calculations and answers at once. Personalize your experience by choosing your favorite color theme. Works on iPhone and iPod.


This comprehensive utility app offers a wide range of calculators for everyday tasks, financial planning, unit conversions, and date calculations. It features a user-friendly interface, customizable options, and support for multiple number systems, making it a versatile tool for students and professionals alike.




Perform essential math operations like addition, subtraction, multiplication, and division without any interruptions. Save your calculations with custom titles for easy retrieval and reuse.











