1. Home
  2. Topics
  3. Unit Converter Inches

Best Unit Converter Inches Apps

188+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated May 2026

Whether you're new to unit converter inches or looking for an upgrade, our curated collection of 188+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Unit Converter Inches Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Unit Converter: Mila's ToolsUnit Converter: Mila's ToolsFree4.8★ (1.4K)YesYesJul 2026
2Unit Converter 2021Unit Converter 2021Free4.7★ (389)YesYesJul 2026
3Unit Converter - Pro Units AppUnit Converter - Pro Units AppFree4.6★ (16K)NoYesJul 2026
4Convert Any Unit LiteConvert Any Unit LiteFree4.7★ (47K)YesNoJul 2026
5Metric Conversion toolMetric Conversion toolFree4.8★ (15K)NoNoJul 2026
6Converter: US-Metric UnitsConverter: US-Metric UnitsFree4.8★ (4)YesYesJul 2026
7Converter+ (Units, Currencies)Converter+ (Units, Currencies)Free4.7★ (2.3K)NoYesJul 2026
8Unit Converter HD.Unit Converter HD.Free4.7★ (642)YesYesMay 2026

Top Picks for Unit Converter Inches

Unit Converter: Mila's Tools#1

Unit Converter: Mila's Tools by Scott DeSapio

Metric Conversion Calculator +
Editor's Choice
🔧 Utilities
4.8😊(1.4K ratings)
FreeAdsIn-App Purchases
Unit Converter: Mila's Tools screenshot 1
Unit Converter: Mila's Tools screenshot 2
Unit Converter: Mila's Tools screenshot 3
Unit Converter: Mila's Tools screenshot 4
Unit Converter: Mila's Tools screenshot 5
Unit Converter: Mila's Tools screenshot 6

This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.

What We Love

  • 👍 Easy to use
  • 🚀 Quick and accurate conversions
  • 💡 Comprehensive list of units
  • 🔍 Convenient for everyday use

Room to Improve

  • 🐛 Scrolling issues on newer devices
  • 🔍 Limited customization options
  • 💰 Desire for free version to remain free
Unit Converter 2021#2

Unit Converter 2021 by 巧春 魏

unit conversion 2020
Strong Contender
🔧 Utilities
4.7😊(389 ratings)
FreeAdsIn-App Purchases
Unit Converter 2021 screenshot 1
Unit Converter 2021 screenshot 2
Unit Converter 2021 screenshot 3
Unit Converter 2021 screenshot 4
Unit Converter 2021 screenshot 5
Unit Converter 2021 screenshot 6

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.

What We Love

  • 👍 Simple and intuitive user interface
  • 🎨 Clean, attractive design
  • ⚡ Fast and accurate conversions
  • 💰 Affordable ad-free premium option

Room to Improve

  • 🐛 Ads persist after purchasing premium
  • 🐛 App crashes or won't open after purchase
  • ❌ Missing support/broken support links
Unit Converter - Pro Units App#3

Unit Converter - Pro Units App by Tue Nguyen Minh

Convert Any Unit
Worth Considering
🔍 Reference
4.6😞(16K ratings)
FreeIn-App Purchases
Unit Converter - Pro Units App screenshot 1
Unit Converter - Pro Units App screenshot 2
Unit Converter - Pro Units App screenshot 3

This app offers a powerful and user-friendly unit converter with 16 categories, including currency, length, and temperature. It allows for custom unit lists and provides live exchange rate updates for 148 currencies. Unlock all features with a one-time in-app purchase.

What We Love

  • 👍 Easy to use
  • 🚀 Simple design
  • 👍 Covers many units
  • 👍 User-friendly layout

Room to Improve

  • 🔒 Limited functionality without paying
  • 🔒 Most common units locked behind paywall
  • 🐛 Restore purchase not working

More Unit Converter Inches apps to explore

4
Convert Any Unit Lite
Convert Any Unit Lite
Convert Any Unit Lite
Units & Currency Converter
Free

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.

Intelligent unit search with autocompleteAutomatic category selectionIntegrated calculator
✈️ Travel
(47K)
ad-supported
5
Metric Conversion tool
Metric Conversion tool
Metric Conversion tool
Unit and currency converter
Free

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.

Offline functionalityOver 30,000 unit conversions160+ currencies with live rates
🔍 Reference
(15K)
free
6
Converter: US-Metric Units
Converter: US-Metric Units
Converter: US-Metric Units
Lb-Kg, Cm-Inch, Mi-Km and more
Free

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.

Weight conversion (Lb-Kg, Oz-G)Length conversion (Cm-Inch, Mi-Km)Volume conversion (Fl Oz-Ml, Cups-L)
🔧 Utilities
(4)
free with in-app purchases
7
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Unit and Currency Converter
Free

This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday needs. It allows users to customize templates, download shared ones, and provides automatic exchange rate updates for 167 world currencies.

Extensive unit and currency conversionMultiple calculators (mortgage, loan, tip)Customizable and downloadable templates
📊 Productivity
(2.3K)
free with in-app purchases
8
Unit Converter HD.
Unit Converter HD.
Unit Converter HD.
30 categories, 700+ units
Free

Easily convert over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.

700+ Units of Measure30 Conversion CategoriesEasy-to-Use Interface
🔧 Utilities
(642)
free with in-app purchases
9
Unit Converter | Converter4U
Unit Converter | Converter4U
Unit Converter | Converter4U
Student Traveler Cook and DIY
Free
$0.99 | 100% OFF

This app provides a powerful and intuitive way to convert between a wide range of units, including length, weight, temperature, and more. It offers simultaneous conversion of multiple units and customizable options for a personalized experience. Get instant, accurate results for all your conversion needs.

Simultaneous multi-unit conversionCustomizable unit optionsCopy converted values to clipboard
📊 Productivity
(193)
free
10
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
11
Converter: Units & Currencies
Converter: Units & Currencies
Converter: Units & Currencies
by DROXIC OOD
Free

This app offers a comprehensive solution for converting various units and currencies. With over 25 categories and 150 currencies supported, it caters to a wide range of conversion needs. It is designed for Apple devices and supports 24 languages.

25+ Categories450+ Units150+ Currencies
🔧 Utilities
(761)
free
12
Converter-Universal Conversion
Converter-Universal Conversion
Converter-Universal Conversion
by Trelleborg Sealing Solutions
Free

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.

Currency converter with live exchange ratesOver 300 engineering and scientific unitsSpecialized hardness converter
🔧 Utilities
(897)
free
13
Fancy Units Converter
Fancy Units Converter
Fancy Units Converter
Currency and Unit Converter
Free

This app offers a fast and user-friendly way to convert units and currencies. Customize your conversion lists and get instant results as you type, with support for over 350 units and 160 currencies. It also includes a built-in calculator and offline currency data.

Real-time conversion350+ physical units160+ currencies
🔧 Utilities
(1.6K)
free with in-app purchases
14
UC - Units Converter
UC - Units Converter
UC - Units Converter
Simplest Unit Converter
Free

This app offers a straightforward way to convert units across various categories. Its user-friendly interface and simple design make conversions quick and effortless, requiring no complicated searches or navigation. It works offline and is free to download and use.

Simple and user-friendly interfaceMultiple unit conversionsOffline functionality
🔧 Utilities
(1)
free
15
Measurement unit converter +
Measurement unit converter +
Measurement unit converter +
metric to us, hhaexchange
Free
📊 Productivity
(0)
16
Convert Any Unit
Convert Any Unit
Convert Any Unit
Units & Currency Converter
$9.99

This app offers a fast and intuitive way to convert between thousands of units and currencies. Simply type to search and select units, with automatic category detection and intelligent suggestions. It includes advanced features like a built-in calculator and bookmark organization.

Fast unit conversion with autocompleteIntelligent search for unitsAutomatic category selection
✈️ Travel
(5.1K)
free
17
Measures Unit Converter
Measures Unit Converter
Measures Unit Converter
Unit Converter
$1.99
$2.99 | 33% OFF

This app offers a comprehensive unit conversion tool with over 971 units across 40 categories, including 173 currencies with real-time exchange rates. It features an intuitive interface, a scientific calculator, and offline functionality, making it ideal for precise conversions.

971 units across 40 categories173 currencies with real-time ratesOffline conversion functionality
🔧 Utilities
(20)
free with in-app purchases
18
Unit Converter - Convert all
Unit Converter - Convert all
Unit Converter - Convert all
Currency, Temperature, Length
Free

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.

Real-time currency conversionsExtensive unit categories (weight, temp, length, volume, etc.)Simple and intuitive interface
✈️ Travel
(13K)
free with in-app purchases
19
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
20
FlyCarpet Unit Converter
FlyCarpet Unit Converter
FlyCarpet Unit Converter
As easy as possible to use.
Free
🔧 Utilities
(0)

FAQ about Unit Converter Inches

What are the best unit converter inches apps for iPhone?
Unit Converter: Mila's Tools tops our unit converter inches apps ranking as of May 2026, with a 4.8-star average from 1.4K App Store ratings, and it's free to download.
Yes — 18 of the top unit converter inches apps we rank are free to download, including Unit Converter: Mila's Tools and Unit Converter 2021.
Unit Converter: Mila's Tools shows ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 188+ unit converter inches apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a comprehensive tool for converting units across 27 different categories, offering over 300 units. It can handle everyday conversions like length, weight, and temperature, as well as more specialized needs such as historical units, fractions, and number system conversions.
Key features include support for 27 conversion categories and over 300 units, the ability to work with compound units (e.g., feet and inches), a date calculator for finding time differences, and conversions between fractions, decimals, percentages, and various number systems like binary and hexadecimal. It also includes historical units and smart keyboards for different input types.