Best Gallons To Liters Apps

184+ iOS apps curated and reviewed

4.4 avg rating
14 free apps
Updated July 2026

Whether you're new to gallons to liters or looking for an upgrade, our curated collection of 184+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Gallons To Liters Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Gallons to LitersGallons to Liters$1.99YesNoJun 2026
2Metric Conversion toolMetric Conversion toolFree4.8★ (15K)NoNoJul 2026
3US Gallons To Liters – Liquid Volume Converter (gal to L)US Gallons To Liters – Liquid Volume Converter (gal to L)$0.994.4★ (7)NoNoJul 2026
4Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)Fluid Ounces To Milliliters – Liquid Volume Converter (fl oz to ml)$0.994.9★ (8)NoNoJul 2026
5Kilograms To PoundsKilograms To Pounds$0.995.0★ (2)NoNoJul 2026
6Unit Plus ConverterUnit Plus ConverterFree4.7★ (478)NoNoJul 2026
7Unit Converter 2021Unit Converter 2021Free4.7★ (408)YesYesJul 2026
8EyeOnWaterEyeOnWaterFree4.7★ (41K)NoNoJul 2026

Top Picks for Gallons To Liters

Metric Conversion tool#2

Metric Conversion tool by Wight Hat

Unit and currency converter
Strong Contender
🔍 Reference
4.8😐(15K ratings)
Free
Metric Conversion tool screenshot 1
Metric Conversion tool screenshot 2
Metric Conversion tool screenshot 3
Metric Conversion tool screenshot 4
Metric Conversion tool screenshot 5

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 Gallons To Liters apps to explore

4
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
5
Kilograms To Pounds
Kilograms To Pounds
Kilograms To Pounds
by Thomas Pelster
$0.99

Easily convert between kilograms and pounds in either direction. This utility requires no internet connection and no special device permissions to function.

Convert kg to lbConvert lb to kgEasy to use interface
🔧 Utilities
(2)
paid
6
Unit Plus Converter
Unit Plus Converter
Unit Plus Converter
Convert Any Unit or Metric
Free

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.

Over 100 conversion unitsMultiple categoriesArea conversion
🔧 Utilities
(478)
free
7
Unit Converter 2021
Unit Converter 2021
Unit Converter 2021
unit conversion 2020
Free

This app offers a streamlined unit conversion experience, focusing on clarity and ease of use. It avoids common frustrations found in other converters by clearly displaying unit names and abbreviations, and by offering a simple, intuitive interface. Convert everyday units like length, weight, and temperature with confidence.

Clear display of unit names and abbreviationsScrollable lists to limit distractionsResponsive buttons for unit selection
🔧 Utilities
(408)
free with in-app purchases
8
EyeOnWater
EyeOnWater
EyeOnWater
Making Water Visible.
Free

Monitor your home's water consumption with this app. View detailed usage history, identify leaks, and understand your water usage trends. Connect to your supported water utility account to make your water usage visible.

View recent water usage with comparisonDetailed usage history (day, week, month, year)Discover usage trends
🔧 Utilities
(41K)
free
9
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
10
UnitMate: imperial to metric
UnitMate: imperial to metric
UnitMate: imperial to metric
by nevr.app
Free
✈️ Travel
(0)
11
Mila's Volume Converter
Mila's Volume Converter
Mila's Volume Converter
Liquid, Dry & Cubic Units Fast
Free

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.

Converts 44 volume unitsSupports 7 measurement categoriesCompound unit conversions
🔧 Utilities
(106)
free with in-app purchases
12
Units Converter Easy
Units Converter Easy
Units Converter Easy
Fast and complet converter
Free

Easily convert between various units for distance, area, volume, weight, speed, temperature, and more. Supports conversions between different regional systems like Europe, the US, and the UK.

Converts distance, area, volume, weight, speed, temperatureSupports power and energy unit conversionsIncludes fuel consumption unit conversions
🔧 Utilities
(4)
ad-supported
13
Milliliters To Cups
Milliliters To Cups
Milliliters To Cups
ml to Cups Capacity Converter
$0.99

Quickly convert milliliters to US cups with adjustable precision. Choose between decimal or fractional (1/8) cup outputs, and set your preferred number of decimal places for accurate conversions.

Milliliter to US cup conversionDecimal or 1/8th cup precisionCustomizable decimal places
🔧 Utilities
(3)
paid
14
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
15
Flume Water
Flume Water
Flume Water
by Flume, Inc.
Free

Monitor and manage your home's water usage with real-time data and leak detection. This app helps you understand your consumption, set budgets, and receive alerts to prevent costly water damage.

Real-time water usage dataLeak detection and alertsWater consumption budgeting
🌟 Lifestyle
(1.4K)
free with in-app purchases
16
Units: Unit converter
Units: Unit converter
Units: Unit converter
Measurement, Currency
Free
$9.99 | 100% OFF

Easily convert between a wide range of measurement units and currencies. Features a clear and simple interface for quick conversions of length, mass, volume, speed, and more. Supports popular currencies and common units for everyday use.

Extensive unit conversionsMultiple currency supportEasy and clear handling
📊 Productivity
(255)
free with in-app purchases
17
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
18
MPG To Kilometers Per Liters
MPG To Kilometers Per Liters
MPG To Kilometers Per Liters
Fuel Consumption Converter
$0.99

Easily convert fuel consumption between miles per gallon (mpg) and kilometers per liter (km/L). Customize the number of decimal places for your conversions.

MPG to KM/L conversionKM/L to MPG conversionAdjustable decimal places
🔧 Utilities
(1)
paid
19
BITZER REFRIGERANT RULER
BITZER REFRIGERANT RULER
BITZER REFRIGERANT RULER
Determine refrigerant data
Free

This tool quickly determines refrigerant data, including properties, safety groups, GWP, and ODP. It offers intuitive temperature-to-pressure conversion and supports both metric and imperial units. Access detailed information and links to online resources for over 100 refrigerants.

Refrigerant data lookupTemperature-to-pressure conversionMetric and imperial unit support
🔍 Reference
(1.1K)
free
20
Dropcountr
Dropcountr
Dropcountr
Your Mobile Water Use Portal
Free

Manage your personal water usage and set goals to conserve. Compare your consumption with neighbors and access utility announcements and rebates. Save water, time, and money with this mobile portal.

Manage personal water useCompare usage to neighborsSet water use goals
🔧 Utilities
(89)
free

FAQ about Gallons To Liters

Are there free gallons to liters apps for iPhone?
Yes — 14 of the top gallons to liters apps we rank are free to download, including Metric Conversion tool and Unit Plus Converter.
Gallons to Liters shows ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 184+ gallons to liters apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.

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