Best Gallon Liter Converter Apps

180+ iOS apps curated and reviewed

4.6 avg rating
17 free apps
Updated May 2026

Finding the right gallon liter converter app can be overwhelming with so many options. We've analyzed 180+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Gallon Liter Converter

Unit Converter | Converter4U#1

Unit Converter | Converter4U by VisTech.Projects LLC

Student Traveler Cook and DIY
Editor's Choice
📊 Productivity
4.6(193 ratings)
Free
Unit Converter | Converter4U screenshot 1
Unit Converter | Converter4U screenshot 2
Unit Converter | Converter4U screenshot 3
Unit Converter | Converter4U screenshot 4
Unit Converter | Converter4U screenshot 5
Unit Converter | Converter4U screenshot 6

This powerful and intuitive unit conversion app allows users to seamlessly convert between various units of measurement, including length, weight, temperature, and more, providing instant and accurate results. Download the app now and experience the convenience of having a comprehensive conversion tool at your fingertips, saving you time and effort.

More Gallon Liter Converter apps to explore

4
Converter-Universal Conversion
Converter-Universal Conversion
Converter-Universal Conversion
by Trelleborg Sealing Solutions
Free

"An all-in-one conversion tool for engineers and scientists, featuring over 300 units across 32 categories, currency conversion, timezone conversion, and more. Switch between themes, create favorite lists, and enjoy a seamless user experience. Available in multiple languages – download now!"

🔧 Utilities
(897)
5
Metric Conversion tool
Metric Conversion tool
Metric Conversion tool
Unit and currency converter
Free

A must-have unit conversion app with over 30,000 conversions, 160 currencies, and detailed historical records. Easily convert weights, temperatures, lengths, areas, volumes, time, angles, and more. Access nine significant digits and fractional results.

🔍 Reference
(15K)
6
Conversion Calculator Plus
Conversion Calculator Plus
Conversion Calculator Plus
Unit Converter
Free

"Explore the ultimate Unit Converter tool with Conversion Calculator Plus – your go-to Swiss army knife for effortless unit conversions. Simplify complex calculations and streamline your work effortlessly."

📊 Productivity
(15K)
7
Units Plus Converter
Units Plus Converter
Units Plus Converter
Convert Any Unit & Currency
$19.99

Units Plus Converter is a versatile application capable of converting any unit of measurement into another. From length and weight to temperature and currency, this app provides a comprehensive tool for all your conversion needs. Download now for hassle-free unit conversions.

🔧 Utilities
(8.3K)
8
Convert Any Unit Lite
Convert Any Unit Lite
Convert Any Unit Lite
Units & Currency Converter
Free

Convert Any Unit Lite is a versatile app that simplifies unit conversions for users, offering a wide range of conversion options. Easily switch between various units for length, weight, volume, and more with a user-friendly interface. Download now to streamline your conversion needs.

✈️ Travel
(47K)
9
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Convert Any Unit
Free

A versatile conversion calculator app that effortlessly converts various units like length, weight, volume, and more. Simplify your conversions with ease by downloading the app now!

🔍 Reference
(16K)
10
Convertible: Unit Converter
Convertible: Unit Converter
Convertible: Unit Converter
Currency and Unit Converter
Free

This application is a comprehensive unit converter that allows users to easily convert between various units of measurement, including standard and non-standard units, across multiple categories such as length, mass, area, and more. With its elegant interface, customizable themes, and unique features like fraction input and output, it helps users visualize and understand complex conversions in a fun and educational way, try it now!

🔧 Utilities
(97)
11
Unit Converter Calculator Pro
Unit Converter Calculator Pro
Unit Converter Calculator Pro
Simple With Metric & Imperial
Free

This application is a user-friendly tool for swiftly converting units across various metrics, making calculations hassle-free. Try it now for effortless unit conversions on-the-go.

🔧 Utilities
(916)
12
GlobeConvert Currency & Units
GlobeConvert Currency & Units
GlobeConvert Currency & Units
Convert Currency and Units
Free

Convert currencies quickly and easily with this user-friendly app. Access up-to-date exchange rates and make conversions on the go. Experience convenience at your fingertips. Try it now!

🔧 Utilities
(79K)
13
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Metric Conversion Calculator +
Free

Experience quick and easy unit conversions with a free, fast, and elegant calculator tool from Mila's Tools. Convert various units such as Area, Bits, Bytes, Length, Temperature, and more effortlessly. Try it out now for hassle-free conversions!

🔧 Utilities
(1.3K)
14
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Unit and Currency Converter
Free

Unit and Currency Converter: Access a comprehensive unit conversion tool featuring a wide range of currencies and units across various categories. Perform calculations with calculators for everyday needs, edit templates, and download user-contributed templates. Keep up-to-date with automatic currency exchange rate updates every 6 hours.

📊 Productivity
(2.3K)
15
Units - Pro Unit Converter
Units - Pro Unit Converter
Units - Pro Unit Converter
by Homegrown Software Ltd
Free

This free app is a versatile unit converter with the ability to convert hundreds of units across various categories, including currency. Users can customize their conversion workflow by hiding unused units and reordering categories. The app is available on iPhones, iPod touches, and iPads.

🔧 Utilities
(150)
16
myConvert Lite
myConvert Lite
myConvert Lite
Currency and units converter
Free

This ultimate unit converter covers everyday to scientific conversion needs, offering multiple unit conversions, a built-in numeric keyboard, and customizable features. Download it now to easily convert units, currencies, and more, and upgrade to the full version for additional features and ad-free experience.

🔍 Reference
(4)
17
Unit Converter - Best Unit App
Unit Converter - Best Unit App
Unit Converter - Best Unit App
Convert All Units and Currency
Free

A free unit converter app optimized for iPhone and iPad, featuring 12 categories for converting various units including area, currency, data, length, and more. Includes daily currency updates for 155 world currencies and is designed for easy use. Download now for quick and accurate unit conversions.

✈️ Travel
(172K)
18
Unit Converter HD.
Unit Converter HD.
Unit Converter HD.
30 categories, 700+ units
Free

Discover a powerful unit converter app with 30 categories and over 700 units of measure. Make conversions easily across various categories and save time with this user-friendly tool.

🔧 Utilities
(642)
19
Gallons to Liters
Gallons to Liters
Gallons to Liters
Convert Gallons to Liters
Free
🔧 Utilities
(0)
20
Volume Converter L, Gal, Oz
Volume Converter L, Gal, Oz
Volume Converter L, Gal, Oz
For litre, ml, gal, quart, oz
$1.99

This fast and efficient volume converter allows users to quickly convert between various units of volume, such as litres, gallons, and ounces, making it a useful tool for professionals and everyday individuals. Try converting volumes quickly and easily with this handy application.

🔧 Utilities
(16)