Easily convert liquid volumes between US gallons and liters. This utility allows you to select your preferred number of decimal places for precise conversions.




248+ iOS apps curated and reviewed
Finding the right gallon liter converter apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | Yes | No | May 2026 | |
| 2 | $0.99 | 4.4★ (7) | No | No | Aug 2026 | |
| 3 | $1.99 | — | No | No | May 2026 | |
| 4 | $0.99 | — | No | No | Aug 2026 | |
| 5 | $1.99 | 4.5★ (19) | No | No | Aug 2026 | |
| 6 | Free | — | No | No | May 2026 | |
| 7 | Free | 4.8★ (4) | Yes | Yes | Jul 2026 | |
| 8 | $1.99 | — | Yes | No | Jun 2026 |






Easily convert liquid volumes between US gallons and liters. This utility allows you to select your preferred number of decimal places for precise conversions.









Easily convert between various volume units including liters, milliliters, gallons, quarts, and fluid ounces. This tool is designed for quick and accurate conversions for everyday use.




Easily convert between US customary and metric units for weight, length, volume, and temperature. The app features a simple interface with no learning curve and automatically saves your conversion history for quick review.




This utility app provides quick and easy conversions between various measurement units. It supports standard categories like length, area, volume, and weight, as well as specialized units for angle, speed, data storage, and currency for over 160 countries.


Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.


This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.


Quickly convert between thousands of units with an intelligent search and autocomplete feature. This app offers a streamlined interface, an integrated calculator, and the ability to save favorite conversions. It supports over 6,400 units across 51 categories, making it a comprehensive tool for all your conversion needs.




Easily convert volume measurements between 18 different units. Simply input your value and select the desired units for instant conversion. Supports a wide range of common and specialized volume measurements.


Easily convert between numerous units and metrics with this intuitive application. It offers over 100 common conversion units across various categories, presented in a simple and elegant interface.




Easily convert between various units and currencies with a simple, intuitive interface. Features live currency updates for 155 world currencies, refreshed every 15 minutes. Optimized for a wide range of Apple devices, including iPads with Split View support.


This app offers a straightforward way to convert common measurements across various categories like length, weight, and temperature. It features a clean interface for quick input and instant, readable results, with options to swap units and view conversion history.


This app provides fast and precise conversions for a wide range of liquid, dry, and cubic volume units. It supports metric, US customary, US dry, UK imperial, and various other measurement systems, including compound conversions. The interface is clean and intuitive, with features like favorites and light/dark modes.

