Best Metric Converter Apps

250+ iOS apps curated and reviewed

4.8 avg rating
19 free apps
Updated October 2026

If you already know Unit Converter, this is the deeper bench. 250+ metric converter apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.

Compare top Metric Converter Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Unit Converter - Best Unit AppUnit Converter - Best Unit AppFree4.8★ (199K)YesYesNov 2026
2Metric Conversion toolMetric Conversion toolFree4.8★ (15K)YesNoNov 2026
3Unit Converter - Pro Units AppUnit Converter - Pro Units AppFree4.6★ (16K)NoYesNov 2026
4Convert Any Unit LiteConvert Any Unit LiteFree4.7★ (48K)YesNoNov 2026
5Unit Converter - Convert allUnit Converter - Convert allFree4.6★ (14K)YesYesNov 2026
6Converter (unit conversions)Converter (unit conversions)Free4.7★ (2K)NoYesOct 2026
7Unit Converter - 14-in-1Unit Converter - 14-in-1Free5.0★ (3)YesNoOct 2026
8Metric Converter ProMetric Converter Pro$2.99—NoNoNov 2026

Top Picks for Metric Converter

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😊(199K ratings)
FreeAdsIn-App Purchases
#81in Travel
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
Metric Conversion tool#2

Metric Conversion tool by Wight Hat

Unit and currency converter
Strong Contender
🔍 Reference
4.8😐(15K ratings)
FreeAds
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
  • 👎 Disruptive to workflow
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
  • 👍 Accurate conversions
  • 👍 Handy reference

Room to Improve

  • 🔒 Limited functionality without paying
  • 🔒 Most common units locked behind paywall
  • 🐛 Restore purchase not working
  • 🐛 Unreliable app support
  • 🔒 Conversion categories locked
  • 🔒 Paid upgrade required for full access

More Metric Converter apps to explore

FAQ about Metric Converter

What are the best metric converter apps for iPhone?
Unit Converter - Best Unit App tops our metric converter apps ranking as of October 2026, with a 4.8-star average from 199K App Store ratings, and it's free to download.
Yes — 19 of the top metric converter apps we rank are free to download, including Unit Converter - Best Unit App and Metric Conversion tool.
Unit Converter - Best Unit App shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ metric converter apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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