# Gas Volume Calc — Orifice Gas Flow Calculator

> Estimates natural gas flow rate using orifice meter calculations for field use. (iPhone/iPad app by Kelly Gayneaux.)

- Source: https://appshunter.io/ios/app/gas-volume-calc/id1082576430 (this page in markdown: same URL + `.md`)
- Developer: [Kelly Gayneaux](https://appshunter.io/developer/1082576429)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.70/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 26.1 · 18 MB
- Languages: American English
- Released: 2016-02-16
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/gas-volume-calc/id1082576430/reviews.md

## What is Gas Volume Calc?

Orifice Calc is a field-ready utility for estimating natural gas flow rate (MCFD) using standard orifice meter calculations. Designed for operators, technicians, and engineers, the app combines meter geometry, flowing conditions, and gas composition inputs to produce reliable flow estimates in seconds.

Whether you are troubleshooting production, verifying measurements, or performing quick field calculations, Orifice Calc provides a simple and dependable workflow.

## Key features

- Estimates natural gas flow rate (MCFD)
- Uses standard orifice meter calculations
- Combines meter geometry, flowing conditions, and gas composition
- Provides reliable flow estimates in seconds
- Simple and dependable field workflow


## Frequently asked questions about Gas Volume Calc

### What is Gas Volume Calc used for?

Gas Volume Calc is a field utility designed to estimate natural gas flow rate (MCFD) using standard orifice meter calculations. It helps users quickly determine flow rates based on various input parameters.

### Who is the target audience for Gas Volume Calc?

The app is intended for operators, technicians, and engineers who work with natural gas and require a tool for reliable flow estimations in the field.

### What information is needed to use Gas Volume Calc?

To use Gas Volume Calc, you need to input meter geometry, flowing conditions, and gas composition. The app then uses this data to produce flow estimates.

### How accurate are the estimates from Gas Volume Calc?

The app is designed to produce reliable flow estimates in seconds by employing standard orifice meter calculations. Users have rated the app highly, with an average of 4.7 stars.

### Is Gas Volume Calc available on Android devices?

Based on the provided data, Gas Volume Calc is supported on iPhone and iPad. Information regarding Android compatibility is not available.

### How often is Gas Volume Calc updated?

The latest version of Gas Volume Calc is 2.0, and it was last updated on February 17, 2026. This indicates a recent update, suggesting ongoing support.

### Does Gas Volume Calc have ads?

No, Gas Volume Calc does not contain advertisements. The app is free to download and use without any ad interruptions.

### What is the age rating for Gas Volume Calc?

Gas Volume Calc has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about or assisting with these calculations.

## Version history (last 3 releases)

### 2.0 — 2026-02-17

This update includes performance improvements, interface refinements, and a rebuilt gas flow calculation engine for improved reliability and accuracy.

### 1.0.2 — 2016-02-27

This app has been updated by Apple to display the Apple Watch app icon.

1. AlertView deprecation fixed for iOS 9.0+.
2. Issues with icon files, and launch files have been repaired.
3. Minor bug fixes.

### 1.0 — 2016-02-16

No release notes.

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## More apps by Kelly Gayneaux

- [Spill Calc Lite](https://appshunter.io/ios/app/spill-calc-lite/id1089421597)
- [Kill String Estimator](https://appshunter.io/ios/app/kill-string-estimator/id1102233434)
- [Workover Assistant](https://appshunter.io/ios/app/workover-assistant/id1117692519)
- [Spill Calc - Pro](https://appshunter.io/ios/app/spill-calc-pro/id1554282536)
- [Volume in Pipe](https://appshunter.io/ios/app/volume-in-pipe/id1582068096)

All apps by Kelly Gayneaux: https://appshunter.io/developer/1082576429

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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 2026-06-01.*