# Rotational horsepower — Accurate calculation

> Accurate calculation (iPhone/iPad app by Hubei Kunmai Electric Co. Ltd.)

- Source: https://appshunter.io/ios/app/rotational-horsepower/id1659372109 (this page in markdown: same URL + `.md`)
- Developer: [Hubei Kunmai Electric Co. Ltd](https://appshunter.io/developer/1658710334)
- Category: Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 8 MB
- Languages: Catalan, English, Hungarian, Polish, Romanian, Chinese
- Released: 2022-12-13
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/rotational-horsepower/id1659372109/reviews.md

## What is Rotational horsepower?

Rotational horsepower calculator, this is an application related to the calculation of rotational horsepower, torque and speed, select the corresponding unit in the application and enter the value, and click to calculate to get the result.


## Version history (last 1 release)

### 1.1 — 2022-12-22

1. Fixed the error that can still be calculated when there is only one calculation parameter;
2. Adjust and optimize the calculation formula, the result is more accurate;

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*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 2026-05-19.*