Best Us Gallons To Liters Apps

171+ iOS apps curated and reviewed

4.6 avg rating
17 free apps
Updated May 2026

Whether you're new to us gallons to liters or looking for an upgrade, our curated collection of 171+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Us Gallons To Liters

Convert Any Unit Lite#1

Convert Any Unit Lite by Cider Software LLC

Units & Currency Converter
Editor's Choice
✈️ Travel
4.7😊(47K ratings)
FreeAds
Convert Any Unit Lite screenshot 1
Convert Any Unit Lite screenshot 2
Convert Any Unit Lite screenshot 3
Convert Any Unit Lite screenshot 4
Convert Any Unit Lite screenshot 5

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.

What We Love

  • 👍 Easy to use
  • 🚀 Comprehensive unit conversions
  • 💡 Allows custom unit creation
  • 🔧 Useful for cooking, travel, and work

Room to Improve

  • 🔍 Too many unit options can be overwhelming
  • 🔍 Ads can be intrusive and disrupt usage
  • 🐛 Occasional bugs and freezing issues
Conversion Calculator !#2

Conversion Calculator ! by oWorld Software

Currency, Temperature, Length
Strong Contender
✈️ Travel
4.6😐(13K ratings)
FreeAdsIn-App Purchases
Conversion Calculator ! screenshot 1
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Conversion Calculator ! screenshot 3
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Conversion Calculator ! screenshot 5
Conversion Calculator ! screenshot 6

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

What We Love

  • 🚀 Easy to use
  • 🚀 Comprehensive unit conversions
  • 👍 Helpful app
  • 👍 Practical for engineering and mechanics

Room to Improve

  • 🔍 Too many ads
  • 🔍 Ads make the app unusable
  • 🔍 Ads are invasive and disrupt user experience
Metric Conversion tool#3

Metric Conversion tool by Wight Hat

Unit and currency converter
Worth Considering
🔍 Reference
4.8😐(15K ratings)
Free
Metric Conversion tool screenshot 1
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Metric Conversion tool screenshot 3
Metric Conversion tool screenshot 4
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This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.

What We Love

  • 💡 Useful conversion tool
  • 👍 Easy to use and navigate
  • 🚀 Quick and efficient
  • 👍 Comprehensive coverage of conversions

Room to Improve

  • 🔊 Intrusive and loud ads
  • 🔒 Questionable privacy practices
  • 🐛 Inaccurate conversions

More Us Gallons To Liters apps to explore

4
Unit Converter - Best Unit App
Unit Converter - Best Unit App
Unit Converter - Best Unit App
Convert All Units and Currency
Free

Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.

20 conversion categoriesLive currency updates155 world currencies
✈️ Travel
(172K)
free with in-app purchases
5
US Gallons To Liters – Liquid Volume Converter (gal to L)
US Gallons To Liters – Liquid Volume Converter (gal to L)
US Gallons To Liters – Liquid Volume Converter (gal to L)
by Armchair Engineering
$0.99

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

US gallons to liters conversionSelect decimal placesQuick and easy to use
🔧 Utilities
(7)
paid
6
GlobeConvert Currency & Units
GlobeConvert Currency & Units
GlobeConvert Currency & Units
Convert Currency and Units
Free

Easily convert over 160 currencies and 350 physical units with real-time updates and offline capabilities. Create a favorites list for quick access to frequently used conversions and enjoy geo-based currency options. An ad-free version is available for purchase.

Real-time conversion160+ currencies supported350+ physical units supported
🔧 Utilities
(79K)
free with in-app purchases
7
Conversion Calculator Plus
Conversion Calculator Plus
Conversion Calculator Plus
Unit Converter
Free

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

Unit and currency conversionSupports 160+ currencies (real & crypto)Automatic currency exchange rate updates
📊 Productivity
(15K)
free with in-app purchases
8
US Unit Converter
US Unit Converter
US Unit Converter
You can easily convert units!
Free

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.

Length conversionWeight conversionArea conversion
🔧 Utilities
(101)
free with in-app purchases
9
Gallons to Liters
Gallons to Liters
Gallons to Liters
Convert Gallons to Liters
$1.99
🔧 Utilities
(0)
10
Currency Converter
Currency Converter
Currency Converter
Reliable Exchange Rates
Free

Instantly convert over 300 currencies, metals, and cryptocurrencies with real-time exchange rates. Access reliable data and advanced analysis tools to understand currency fluctuations and approximate bank rates.

Convert 300+ currencies, metals, cryptocurrenciesReal-time exchange ratesReliable OANDA Rates
💼 Business
(69)
free
11
Unit of measurement converter
Unit of measurement converter
Unit of measurement converter
Conversion units Calculator
Free

Easily convert between various units of measurement for length, area, volume, weight, and more. Input values and instantly see results, simplifying daily calculations for work, homework, or household tasks.

Converts 95 units across 15 categoriesSupports length, area, volume, weight, time, and moreInstant conversion results
🔧 Utilities
(372)
ad-supported
12
Currency converter: Exchange
Currency converter: Exchange
Currency converter: Exchange
Converter for 160+ currencies
Free

This app provides real-time foreign exchange rates for over 160 currencies. It offers offline access, custom rates, and historical data, making it useful for travelers and online shoppers.

160+ currencies supportedLive exchange ratesOffline mode
✈️ Travel
(4.2K)
freemium
13
Gas Prices Near You
Gas Prices Near You
Gas Prices Near You
Find Cheap Local Gas Prices
Free

Locate the most affordable gasoline in your vicinity across the USA, Australia, Canada, and Taiwan. Easily search by zip code, postal code, or your current GPS location to find the best prices.

Find cheapest gas near youSearch by zip/postal codeSearch by GPS
🌟 Lifestyle
(7K)
ad-supported
14
Nee-Vo
Nee-Vo
Nee-Vo
by Reseau sans fil Otodata Inc
Free

Instantly view real-time tank levels on your smartphone, eliminating guesswork. Track usage history, receive low-level alerts, and easily request refills from your fuel supplier. Manage multiple tanks and share access with others.

Real-time tank level trackingUsage history consultationConfigurable low-level notifications
🔧 Utilities
(7.3K)
free
15
Uniter: Smart Unit Conversion
Uniter: Smart Unit Conversion
Uniter: Smart Unit Conversion
Convert Metric & US Imperial
Free

Effortlessly convert units of measurement directly within text, websites, or even through your camera. This utility automatically detects and converts units to your preferred system, supporting a vast array of measurement types.

Automatic unit conversionLive side-by-side converterFile import for conversion
🔧 Utilities
(69)
free with in-app purchases
16
Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)
Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)
Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)
by Armchair Engineering
$0.99

Easily convert liquid volumes between fluid ounces and milliliters. This utility app offers a simple interface for quick calculations, allowing you to set your preferred decimal precision.

Fluid ounce to milliliter conversionMilliliter to fluid ounce conversionAdjustable decimal places
🔧 Utilities
(8)
paid
17
Halliburton eRedBook® Mobile
Halliburton eRedBook® Mobile
Halliburton eRedBook® Mobile
by Halliburton
Free

This app provides essential data and calculators for oil and gas well calculations. Access key dimensions, strengths, and specifications for tubulars to quickly determine volumes and capacities. Supports multiple unit systems for flexible calculations.

Instant access to pipe dimensions and strengthsQuickly calculate capacity and annulus volumesView volume measurements in Metric or Imperial units
💼 Business
(30)
free
18
Converter (unit conversions)
Converter (unit conversions)
Converter (unit conversions)
by Brent Royal-Gordon
Free

Easily convert between 76 measurement units across eight common types, including length, weight, temperature, and volume. Features a built-in calculator and optional currency conversion with daily exchange rate updates.

76 measurement units8 common unit typesBuilt-in four-function calculator
🔧 Utilities
(1.9K)
free with in-app purchases
19
Simple Fuel Calculator (USA)
Simple Fuel Calculator (USA)
Simple Fuel Calculator (USA)
Calculates fuel usage and cost
Free

This application helps users calculate their fuel consumption and associated costs. It utilizes standard units commonly used in the USA, such as miles, dollars, and U.S. gallons.

Fuel consumption calculationCost calculationUses US standard units (miles, $, gallons)
✈️ Travel
(6)
free
20
Unit Converters in ft lb oz
Unit Converters in ft lb oz
Unit Converters in ft lb oz
with Conversion Formulas
Free

This utility app offers a straightforward way to convert various units of measurement, including temperature, speed, length, weight, and capacity. It displays results instantly as you input numbers, supporting common conversions like Fahrenheit to Celsius and pounds to kilograms.

Instant conversion resultsTemperature conversion (F/C)Speed conversion (mph/km/h/m/s)
🔧 Utilities
(122)
ad-supported