Best Metric Conversion Unit Apps

241+ iOS apps curated and reviewed

3.9 avg rating
18 free apps
Updated November 2026

Whether you're new to metric conversion unit or looking for an upgrade, our curated collection of 241+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Metric Conversion Unit Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Metric Conversion toolMetric Conversion toolFree4.8★ (15K)YesNoNov 2026
2Unit Converter 2021Unit Converter 2021Free4.7★ (408)YesYesOct 2026
3Conversion: Unit ConverterConversion: Unit Converter$0.993.0★ (5)NoNoSep 2026
4Conversion Calculator - MetricConversion Calculator - MetricFree4.8★ (165)NoYesOct 2026
5Units - Pro Unit ConverterUnits - Pro Unit ConverterFree4.1★ (51)YesYesOct 2026
6Metric/Imperial UnitsMetric/Imperial UnitsFree5.0★ (1)NoNoMay 2026
7unit. — Unit Converterunit. — Unit ConverterFree was $4.995.0★ (1)NoYesOct 2026
8Unit Ease - Metric vs ImperialUnit Ease - Metric vs ImperialFree5.0★ (67)NoYesOct 2026

Top Picks for Metric Conversion Unit

Metric Conversion tool#1

Metric Conversion tool by Wight Hat

Unit and currency converter
Editor's Choice
🔍 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
Unit Converter 2021#2

Unit Converter 2021 by 巧春 魏

unit conversion 2020
Strong Contender
🔧 Utilities
4.7😊(408 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
  • 📱 Easy to navigate and use
  • 🔄 Reliable conversion functionality

Room to Improve

  • 🐛 Ads persist after purchasing premium
  • 🐛 App crashes or won't open after purchase
  • ❌ Missing support/broken support links
  • 📊 Limited unit categories compared to needs
  • 🔧 Lacks customization options (themes, colors)
  • ⚠️ Calculation accuracy issues reported
Conversion: Unit Converter#3

Conversion: Unit Converter by Duncan Campbell

Currency, metric & imperial
Worth Considering
🔧 Utilities
3.0(5 ratings)
$0.99
Conversion: Unit Converter screenshot 1
Conversion: Unit Converter screenshot 2
Conversion: Unit Converter screenshot 3
Conversion: Unit Converter screenshot 4
Conversion: Unit Converter screenshot 5

This utility app provides instant conversions between a wide range of units, including metric, imperial, and currency. It features live exchange rates and supports 33 languages, all within a clean, clutter-free interface.

More Metric Conversion Unit apps to explore

FAQ about Metric Conversion Unit

What are the best metric conversion unit apps for iPhone?
Metric Conversion tool tops our metric conversion unit apps ranking as of November 2026, with a 4.8-star average from 15K App Store ratings, and it's free to download.
Yes — 18 of the top metric conversion unit apps we rank are free to download, including Metric Conversion tool and Unit Converter 2021.
Metric Conversion tool shows ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 241+ metric conversion unit apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.