# Ohm's Law Calculator! > Electrical Ohm's Law calculator for voltage, amperage, resistance, and power. (iPhone/iPad app by Rantek Inc..) - Source: https://appshunter.io/ios/app/ohms-law-calculator/id334831372 (this page in markdown: same URL + `.md`) - Developer: [Rantek Inc.](https://appshunter.io/developer/319592818) - Category: Utilities, Education - Price: $1.99 - Rating: 3.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 6 MB - Languages: English - Released: 2009-10-22 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/ohms-law-calculator/id334831372/reviews.md ## What is Ohm's Law Calculator!? Ohm's Calculator allows you to enter any two values of resistance, amperage, voltage, or power and receive the remaining two values via Ohm's Law. Perfect for Electrical Engineering students or professionals, enter in the voltage, amps, ohms, or watts and receive the answers you need quickly! This app includes quick-buttons with standard increments of units/items in each category. These quick-buttons come in real handy. For instance, for a 660 ohm resistor, simply, tap the 330 button twice instead of having to pull up the keypad and type it in. An improvement over other Ohm's Law applications, this app allows you to clear only the two output values so you don't have to reset all the values and start over every time you want to change only one entry. In the value boxes you'll see a green dot for values that were manually entered so you don't forget which ones are 'fixed' when evaluating the results. Thanks for using Ohm's Calculator! ## Key features - Calculate voltage, amperage, resistance, and power - Enter any two values to find the remaining two - Quick-buttons for standard increments - Selective clearing of output values - Visual indicator for manually entered values ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/ohms-law-calculator/id334831372/reviews.md ### 1/5 — Don't buy *2017-03-01* Does not work has not been updated in 6yrs No way of getting a refund ## Frequently asked questions about Ohm's Law Calculator! ### What is Ohm's Law Calculator! used for? Ohm's Law Calculator! is a utility app designed to help users quickly calculate missing electrical values like voltage, amperage, resistance, and power using Ohm's Law. It's ideal for electrical engineering students and professionals. ### How does Ohm's Law Calculator! work? You input any two known values from voltage, amperage, resistance, or power, and the app automatically calculates and displays the remaining two values based on Ohm's Law. It also features quick-buttons for common increments. ### Does Ohm's Law Calculator! have ads? No, Ohm's Law Calculator! does not contain advertisements. ### What is the price of Ohm's Law Calculator!? Ohm's Law Calculator! is a paid application, priced at $1.99. ### What devices is Ohm's Law Calculator! compatible with? Ohm's Law Calculator! is supported on iPhone and iPod devices. ### How often is Ohm's Law Calculator! updated? The latest version of Ohm's Law Calculator! is 2.0, last updated on July 12, 2017. It was originally released on October 22, 2009. ### What is the age rating for Ohm's Law Calculator!? Ohm's Law Calculator! has an age rating of 4+, making it suitable for a wide range of users. ### What is the user rating for Ohm's Law Calculator!? Ohm's Law Calculator! has a rating of 3.0 stars based on 1 review. ## Version history (last 5 releases) ### 2.0 — 2017-07-12 This app has been updated by Apple to display the Apple Watch app icon. Updated interface & compatible for 64B. ### 1.3 — 2010-08-11 iOS 4.0 Tested ### 1.2 — 2010-01-07 Minor interface modifications ### 1.1 — 2009-12-21 The 1w button should have been 1kw. ### 1.0 — 2009-10-22 No release notes. ## Apps similar to Ohm's Law Calculator! | App | Rating | Price | Category | | --- | --- | --- | --- | | [Rule of Three Calculator](https://appshunter.io/ios/app/rule-of-three-calculator/id1185318300) | 2.3 (4) | Free | Utilities | | [レコーダー - スピークバディ パーソナルコーチング](https://appshunter.io/ios/app/id1469874020) | — | Free | Utilities | | [TLF Events Tamil](https://appshunter.io/ios/app/tlf-events-tamil/id1481109080) | — | Free | Utilities | | [EDC Acoustics Pro](https://appshunter.io/ios/app/edc-acoustics-pro/id1620045013) | — | $74.99 | Utilities | | [EDC Acoustics Rapid](https://appshunter.io/ios/app/edc-acoustics-rapid/id6444543668) | — | $35.99 | Utilities | | [Electric PRO](https://appshunter.io/ios/app/electric-pro/id1014995444) | 4.2 (5) | $0.99 | Utilities | ## More apps by Rantek Inc. - [Smart Chef - Cooking Helper](https://appshunter.io/ios/app/smart-chef-cooking-helper/id319592815) - [Animals -Montessori Vocabulary](https://appshunter.io/ios/app/animals-montessori-vocabulary/id400726281) - [United States of America Map](https://appshunter.io/ios/app/united-states-of-america-map/id404180273) - [Hundred Board -Montessori Math](https://appshunter.io/ios/app/hundred-board-montessori-math/id406327239) - [Pink Tower - Montessori Math](https://appshunter.io/ios/app/pink-tower-montessori-math/id407599645) All apps by Rantek Inc.: https://appshunter.io/developer/319592818 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*