Best Unit Of Measurement Conversion Apps

249+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated November 2026

Out of 249+ unit of measurement conversion apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Unit Of Measurement Conversion Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Unit Converter - Best Unit AppUnit Converter - Best Unit AppFree4.8★ (200K)YesYesNov 2026
2Convert Any Unit LiteConvert Any Unit LiteFree4.7★ (48K)YesNoNov 2026
3Unit of measurement converterUnit of measurement converterFree4.7★ (386)YesNoOct 2026
4Metric Conversion toolMetric Conversion toolFree4.8★ (15K)YesNoNov 2026
5Unit of Measurement ConversionUnit of Measurement ConversionFree—NoNoOct 2026
6Unit Converter - Convert allUnit Converter - Convert allFree4.6★ (14K)YesYesNov 2026
7Converter (unit conversions)Converter (unit conversions)Free4.7★ (2K)NoYesOct 2026
8Unit Converter - Pro Units AppUnit Converter - Pro Units AppFree4.6★ (16K)NoYesNov 2026

Top Picks for Unit Of Measurement Conversion

Unit Converter - Best Unit App#1

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Editor's Choice
✈️ Travel
4.8😊(200K 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

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.

What We Love

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

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
  • 💰 Pro version not worth the cost
Convert Any Unit Lite#2

Convert Any Unit Lite by Cider Software LLC

Units & Currency Converter
Strong Contender
✈️ Travel
4.7😊(48K 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
  • 🔍 Intuitive and straightforward interface

Room to Improve

  • 🔍 Too many unit options can be overwhelming
  • 🔍 Ads can be intrusive and disrupt usage
  • 🐛 Occasional bugs and freezing issues
  • 🔋 High ad frequency drains battery quickly

More Unit Of Measurement Conversion apps to explore

FAQ about Unit Of Measurement Conversion

What are the best unit of measurement conversion apps for iPhone?
Unit Converter - Best Unit App tops our unit of measurement conversion apps ranking as of November 2026, with a 4.8-star average from 200K App Store ratings, and it's free to download.
Yes — 20 of the top unit of measurement conversion apps we rank are free to download, including Unit Converter - Best Unit App and Convert Any Unit Lite.
Unit Converter - Best Unit App shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 249+ unit of measurement conversion apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.