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Best Units Conversion Chart Apps

166+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated May 2026

With an average user rating of 4.7★, the units conversion chart category is one of the App Store's strongest. Browse all 166+ apps we track, sorted so the most loved ones surface first.

Top Picks for Units Conversion Chart

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

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.

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
Unit Converter - Best Unit App#2

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Strong Contender
✈️ Travel
4.8😊(172K ratings)
FreeAdsIn-App Purchases
Unit Converter - Best Unit App screenshot 1
Unit Converter - Best Unit App screenshot 2
Unit Converter - Best Unit App screenshot 3
Unit Converter - Best Unit App screenshot 4
Unit Converter - Best Unit App screenshot 5
Unit Converter - Best Unit App screenshot 6

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.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
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
Metric Conversion tool screenshot 2
Metric Conversion tool screenshot 3
Metric Conversion tool screenshot 4
Metric Conversion tool screenshot 5

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.

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 Units Conversion Chart apps to explore

4
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)
5
gUnit Lite - Free Currency & Unit Converter (Conversion)
gUnit Lite - Free Currency & Unit Converter (Conversion)
gUnit Lite - Free Currency & Unit Converter (Conversion)
by Axonic Labs LLC
Free

gUnit Lite is a convenient currency converter app that allows users to quickly convert between different currencies with ease. Download now to simplify your currency exchange needs on-the-go!

🔧 Utilities
(70)
6
CONVERT UNITS
CONVERT UNITS
CONVERT UNITS
Simple unit conversion tool
Free

Convert Units is a comprehensive conversion tool that supports various unit types, including currency, with automatic currency updates and a vast selection of 160 currencies. It offers convenient features like multitasking on iPad, quick access links, and customizable display options for accuracy and rounding. The app provides a user-friendly interface with a dark design and the ability to disable sound and rotation.

📊 Productivity
(932)
7
Units Conversion Chart
Units Conversion Chart
Units Conversion Chart
Volume, Speed, Torque, Density
Free
🔧 Utilities
(0)
8
Units+
Units+
Units+
unit and currency converter
Free

This unit and currency converter app allows users to easily convert values between over 260 units in 22 categories, including length, mass, and temperature, as well as exchange rates for over 160 currencies. With features like search, bookmarking, and categorization, users can quickly find and save frequently used conversions, making it a convenient tool for everyday calculations.

🔧 Utilities
(366)
9
Converter (unit conversions)
Converter (unit conversions)
Converter (unit conversions)
by Brent Royal-Gordon
Free

An essential unit conversion tool praised by Macworld Magazine, featuring 76 measurement units across various categories. Easily convert between units like length, weight, temperature, and more with a user-friendly interface and daily exchange rate subscription option for 161 currencies. Effortlessly manage your everyday unit conversions with this intuitive and practical application.

🔧 Utilities
(1.9K)
10
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)
11
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)
12
gUnit - Currency & Unit Converter (Conversion)
gUnit - Currency & Unit Converter (Conversion)
gUnit - Currency & Unit Converter (Conversion)
by Axonic Labs LLC
$1.99

gUnit - Currency is a user-friendly mobile app that provides real-time currency conversion rates, historical data, and customizable alerts. Stay informed about exchange rates and make smart decisions with gUnit - Currency today!

🔧 Utilities
(142)
13
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)
14
Conversion Calculator Units
Conversion Calculator Units
Conversion Calculator Units
Unit Conversion Calculator All
Free

This app is a handy conversion calculator with 12 categories for quickly converting units. Simplify your conversions with ease!

🔧 Utilities
(4.8K)
15
The Conversion App
The Conversion App
The Conversion App
Convert Simply
Free

This unit conversion app allows users to easily convert various units of measurement, including length, weight, speed, and more, with a simple and clean interface. Users can also request new conversion types and get them added promptly, with future updates including real-time currencies and support for more devices.

🔧 Utilities
(60)
16
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)
17
Converter: Units & Currencies
Converter: Units & Currencies
Converter: Units & Currencies
by DROXIC OOD
Free

Convert various units quickly and easily with this user-friendly app. Input your values and select the type of conversion you need – whether it's length, weight, volume, or more – and get instant results. Streamline your daily tasks with this efficient tool today!

🔧 Utilities
(761)
18
Unit Converter 2021
Unit Converter 2021
Unit Converter 2021
unit conversion 2020
Free

Discover a unit converter application designed to simplify conversions without the usual confusion. Easily convert common units with a user-friendly interface prioritizing ease of use. Try it and eliminate the hassle of inaccurate or intrusive ads. For inquiries, contact app@1m1000mm.com.

🔧 Utilities
(389)
19
Unity: The Best Unit Converter
Unity: The Best Unit Converter
Unity: The Best Unit Converter
Unit & Currency Conversion.
Free

This unit and currency converter offers precise and customizable conversions across over 600 types, including 18 categories, with features like favourites, up-to-date currency rates, and a built-in calculator. Download it now to easily convert units and currencies, and even create your own custom conversions!

🔧 Utilities
(25)
20
EZPZ Unit Converter
EZPZ Unit Converter
EZPZ Unit Converter
The Complete Unit Converter
Free

This unit converter app offers over 1000 conversions across 17 categories, including currency, temperature, and length, with the ability to save frequently used conversions for easy access. With a user-friendly design and fun facts, it provides a practical and enjoyable way to convert units - and it's completely free to use.

🔧 Utilities
(47)

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