# Hot Rod Calc — Bracket Racer Performance Calc

> Performance calculator for drag racing and automotive enthusiasts with extensive conversion tools. (iPhone/iPad app by Calculated Industries.)

- Source: https://appshunter.io/ios/app/hot-rod-calc/id663964190 (this page in markdown: same URL + `.md`)
- Developer: [Calculated Industries](https://appshunter.io/developer/370406449)
- Category: Utilities, Sports
- Price: $9.99
- Rating: 1.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 17 MB
- Languages: English
- Released: 2013-06-27
- Data updated: 2026-07-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hot-rod-calc/id663964190/reviews.md

## What is Hot Rod Calc?

Road and Strip Performance Calculator for your iPhone or iPad

And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible.

Great for: Bracket Racers, Hot Rod Owners, Engine Builders, Car and Truck Enthusiasts, Bench Racers.

Low introductory pricing!

•   Predict Elapsed Time and Speed, Using Motorsport Standard Atmosphere Corrections 
•   Calculate how current track conditions will affect your car's performance 
•   Full User's Guide built in as well as ability to press and hold a key for specific help

ET Prediction calculator with built-in motor building and performance solutions will give you the competitive edge at the track or in the garage, without having to remember complex formulas or look them up in tables or charts. 

At the track racers can see how weather and elevation will affect their times so they can instantly predict dial-ins using current track conditions. 

In the garage, engine builders and tuners can easily see how changes in a car's engine and fuel system will affect performance and solve dozens of "what if" scenarios in seconds. 

It helps you: 
•   Calculate Engine Displacement in cubic inches, liters or cc’s 
•   Improve your engine’s air-fuel efficiency 
•   Calculate how changes in tire size affect gear ratio and speedometer 
•   Easily calculate fluid conversions for gallons, fluid ounces, cc, ml, liters, temperature conversions for Celsius and Fahrenheit, weight conversions, metric and imperial 
•   Automatically calculate Brake Horsepower given Torque and RPM, or ET and Vehicle Weight, or MPH and Vehicle Weight


BUILT-IN SOLUTIONS 
•   Predict Elapsed Time and trap speed for 1/4 mile and 1/8 mile runs 
•   Automatically calculate Brake HP given Torque and RPM, ET and Weight or MPH and Weight. 
•   Enter or calculate local track conditions, including Absolute Pressure, Air Temperature, Moisture, Elevation, Air Density Index and Density altitude, Wind Speed and Direction and predict their effects on your ET and speed. 
•   Calculate speed given Vehicle Weight and HP or Tire Diameter, Gear Ratio and RPM. 
•   Instantly see how changes to any of 8 engine measurements can increase your Compression Ratio -- deck height, dome volume, chamber volume, gasket thickness, gasket bore, bore and stroke and/or milling the heads. 
•   Enter target Engine Displacement and current Stroke to calculate the new Bore or enter displacement and current Bore to calculate new Stroke.

ADDITIONAL FEATURES
•   Fluid conversions for gallons, fluid ounces, cc, ml, liters, temperature conversions for Fahrenheit and Celsius, weight conversions, metric and imperial conversions. 
•   Calibrate the calculator's Mechanical Efficiency setting to more closely match a car's time. 
•Calculate fuel correction index to determine new jet flow requirements. 
•   Built-in help, including Holley® jet specs – just press and hold the desired key for full, clear definitions, explanations and examples of keystrokes.

## Key features

- Predict Elapsed Time and Speed
- Calculate track condition effects
- Engine displacement calculation
- Fluid and temperature conversions
- Brake Horsepower calculation
- Compression Ratio calculation


## Frequently asked questions about Hot Rod Calc

### What is Hot Rod Calc used for?

Hot Rod Calc is a performance calculator designed for drag racing and automotive enthusiasts. It helps predict elapsed time and speed, analyze the impact of track conditions, and perform various engine and fluid calculations.

### Does Hot Rod Calc have ads?

No, Hot Rod Calc is a paid application and does not contain advertisements.

### What is the price of Hot Rod Calc?

Hot Rod Calc is available for a one-time purchase of $9.99. The app was launched with low introductory pricing.

### What devices is Hot Rod Calc compatible with?

Hot Rod Calc is available for iPhone and iPod. Please note that licenses are not transferable between iOS and non-iOS devices.

### How often is Hot Rod Calc updated?

The latest version of Hot Rod Calc is 10.3.0, which was last updated on July 19, 2023. Updates typically include performance improvements and new features.

### What kind of calculations can Hot Rod Calc perform?

Hot Rod Calc can predict elapsed time and speed, calculate engine displacement, air-fuel efficiency, brake horsepower, compression ratio, and perform numerous fluid, temperature, and weight conversions.

### Is Hot Rod Calc suitable for professional engine builders?

Yes, Hot Rod Calc is great for engine builders and tuners, allowing them to easily assess how changes in engine and fuel systems will affect performance and solve 'what if' scenarios.

### What is the user rating for Hot Rod Calc?

Hot Rod Calc has a current rating of 1.0 stars based on 1 review. This rating may not reflect the full user experience due to the limited number of reviews.

## Version history (last 5 releases)

### 10.3.0 — 2023-07-19

App Store compliance update

### 10.2.0 — 2020-05-12

New menu and navigation

### 1.1.0 — 2016-12-14

iOS 10 support.

### 1.0.1 — 2013-09-18

iOS 7 updates.

### 1.0.0 — 2013-06-27

No release notes.

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All apps by Calculated Industries: https://appshunter.io/developer/370406449

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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 2026-07-24.*