# Engine Horsepower Calculator — Estimates Engine Horsepower

> Estimates vehicle engine horsepower using weight, time, and speed data. (iPhone/iPad app by Nitrio.)

- Source: https://appshunter.io/ios/app/engine-horsepower-calculator/id1095000562 (this page in markdown: same URL + `.md`)
- Developer: [Nitrio](https://appshunter.io/developer/321121189)
- Category: Productivity, Utilities
- Price: $2.99
- Rating: 4.20/5 from 6 App Store ratings
- Age rating: 4+
- Requires: iOS 13 · 1 MB
- Languages: American English, Finnish, French (France), German (Germany), Italian, Japanese, Russian, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2016-03-31
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/engine-horsepower-calculator/id1095000562/reviews.md

## What is Engine Horsepower Calculator?

Engine Horsepower Calculator are used to estimate the engine horsepower of your vehicle based on the weight, the time, and the speed to finish a quarter mile run. 

The weight to be used should include the mass of the vehicle, the driver, the passenger, and other load. The results of these calculator are estimations only.

Horsepower Calculation Method
The ET Method
This method uses the vehicle weight and the elapsed time (ET) to finish a quarter mile (402.3 meters).

The Trap-speed Method
This method uses the vehicle weight and the speed at which the vehicle finished a quarter mile (402.3 meters) . The speed to be used here should be the finishing speed at the quarter mile point.

The RPM Torque Method
This method uses the torque value from the vehicle manual book, The RPM should indicate the maximum torque output.

Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

## Key features

- Estimate engine horsepower
- Quarter-mile run calculations
- ET Method calculation
- Trap-speed Method calculation
- RPM Torque Method calculation
- Vehicle weight input

## Chart rankings

- #194 in Top Paid · Productivity (US App Store)


## Frequently asked questions about Engine Horsepower Calculator

### What is Engine Horsepower Calculator?

Engine Horsepower Calculator is a paid app that helps you estimate your vehicle's engine horsepower. It uses methods like the ET Method, Trap-speed Method, and RPM Torque Method based on your vehicle's weight, speed, and elapsed time for a quarter-mile run.

### How accurate are the horsepower estimations?

The results provided by Engine Horsepower Calculator are estimations only. The app uses specific calculation methods to provide these figures, but real-world performance can vary.

### What information do I need to use Engine Horsepower Calculator?

To use the app, you will need your vehicle's weight (including driver and passengers), the time it takes to complete a quarter-mile run, or the finishing speed at the quarter-mile mark. For the RPM Torque Method, you'll need the torque value from your vehicle's manual.

### What calculation methods does Engine Horsepower Calculator offer?

Engine Horsepower Calculator offers three main methods: the ET Method (using vehicle weight and elapsed time), the Trap-speed Method (using vehicle weight and finishing speed), and the RPM Torque Method (using torque and RPM from the vehicle manual).

### Is Engine Horsepower Calculator available on Android?

Engine Horsepower Calculator is currently available for iOS devices, including iPhone, iPad, and iPod. Information regarding Android availability was not provided.

### How much does Engine Horsepower Calculator cost?

Engine Horsepower Calculator is a paid application, priced at $2.99. This is a one-time purchase, and no subscription is required.

### How often is Engine Horsepower Calculator updated?

The latest version of Engine Horsepower Calculator is 1.3, last updated on January 6, 2026. This indicates a recent update, suggesting ongoing support and potential for future improvements.

### What is the age rating for Engine Horsepower Calculator?

Engine Horsepower Calculator has an age rating of 4+. This means it is suitable for users aged 4 and above, indicating no mature content.

## Version history (last 4 releases)

### 1.3 — 2026-01-06

- Updated for the newest devices.
- Minor bugs fixed.

### 1.2 — 2020-08-05

- Update for Newest Devices

### 1.1 — 2018-03-22

- Update for Newest Devices
- Minor UI Update

### 1.0 — 2016-03-31

No release notes.

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All apps by Nitrio: https://appshunter.io/developer/321121189

## Related topics

[kilowatts to horsepower](https://appshunter.io/ios/topics/kilowatts-to-horsepower)

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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 2026-08-26.*