1. Home
  2. Topics
  3. Metric Conversion Tool

Best Metric Conversion Tool Apps

250+ iOS apps curated and reviewed

4.7 avg rating
18 free apps
Updated September 2026

If you already know Metric Conversion tool, this is the deeper bench. 250+ metric conversion tool apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Metric Conversion Tool Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Metric Conversion toolMetric Conversion toolFree4.8★ (15K)NoNoSep 2026
2Unit Converter - Best Unit AppUnit Converter - Best Unit AppFree4.8★ (193K)YesYesSep 2026
3Convert Any Unit LiteConvert Any Unit LiteFree4.7★ (48K)YesNoSep 2026
4Converter (unit conversions)Converter (unit conversions)Free4.7★ (1.9K)NoYesAug 2026
5CONVERT UNITSCONVERT UNITSFree4.7★ (1.4K)YesNoAug 2026
6Unit Converter - Pro Units AppUnit Converter - Pro Units AppFree4.6★ (16K)NoYesSep 2026
7Unit Converter - Convert allUnit Converter - Convert allFree4.6★ (13K)YesYesSep 2026
8Metric Converter ProMetric Converter Pro$2.99—NoNoAug 2026

Top Picks for Metric Conversion Tool

Metric Conversion tool#1

Metric Conversion tool by Wight Hat

Unit and currency converter
Editor's Choice
🔍 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

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
Unit Converter - Best Unit App#2

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Strong Contender
✈️ Travel
4.8😊(193K ratings)
FreeAdsIn-App Purchases
#91in 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

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
Convert Any Unit Lite#3

Convert Any Unit Lite by Cider Software LLC

Units & Currency Converter
Worth Considering
✈️ 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

Room to Improve

  • 🔍 Too many unit options can be overwhelming
  • 🔍 Ads can be intrusive and disrupt usage
  • 🐛 Occasional bugs and freezing issues

More Metric Conversion Tool apps to explore

4
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
5
CONVERT UNITS
CONVERT UNITS
CONVERT UNITS
Metric, Science & Engineering
Free

Easily convert between various units of measurement including length, weight, temperature, and currency. Features automatic currency updates, a vast selection of currencies, and customizable display options for accuracy and rounding. Optimized for multitasking on iPad and offers a beautiful dark design.

Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currencyAutomatic currency updates160 currencies available
📊 Productivity
(1.4K)
ad-supported
6
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Convert Any Unit
Free

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.

16 conversion categoriesCustom unit listsLive currency exchange rates
🔍 Reference
(16K)
free with in-app purchases
7
Unit Converter - Convert all
Unit Converter - Convert all
Unit Converter - Convert all
Measurements & Calculations
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
8
Metric Converter Pro
Metric Converter Pro
Metric Converter Pro
Quick Unit Converter
$2.99

This tool offers instant unit conversions without clutter or ads. It features a one-screen design for quick input and results, supporting a wide range of smart unit groups and common metric and imperial units. It works offline and is ideal for everyday use, travel, work, and school.

One-screen input and result displayInstant conversion while typingSmart unit groups
📊 Productivity
(0)
paid
9
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Conversion Calculator PLUS
Free

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.

27 conversion categories300+ unitsCompound unit support
🔧 Utilities
(1.4K)
free with in-app purchases
10
Unit Converter - Units & Tools
Unit Converter - Units & Tools
Unit Converter - Units & Tools
Swap units fast. Works offline
Free
🌟 Lifestyle
(0)
11
Metric Converters
Metric Converters
Metric Converters
Metric Prefix Conversions
$0.99
🔧 Utilities
(0)
12
Shiftz Unit: Global Scale
Shiftz Unit: Global Scale
Shiftz Unit: Global Scale
by Olmez Sabri
Free
🔧 Utilities
(0)
13
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
(2.4K)
free with in-app purchases
14
Conversion Wizard
Conversion Wizard
Conversion Wizard
Measuring unit conversion
Free
📊 Productivity
(0)
15
Inlet Junto: Scale Converter
Inlet Junto: Scale Converter
Inlet Junto: Scale Converter
by HUGO ASBJORNSEN
Free
🔧 Utilities
(0)
16
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
17
Falezo Maids: Length Tools
Falezo Maids: Length Tools
Falezo Maids: Length Tools
by KOCABAS HAKAN KEMAL
Free
🔧 Utilities
(0)
18
Cm to Inches Converter App
Cm to Inches Converter App
Cm to Inches Converter App
Inch to cm and cm to Inch
Free
🔧 Utilities
(0)
19
Convert Sci：Simple Converter
Convert Sci：Simple Converter
Convert Sci：Simple Converter
by Sacan Halime
Free
🔧 Utilities
(0)
20
Conversion Calculator Units
Conversion Calculator Units
Conversion Calculator Units
Unit Conversion Calculator All
Free

This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.

Converts over 140 unitsSupports 12 conversion categoriesCustomizable themes
🔧 Utilities
(4.8K)
free with in-app purchases

FAQ about Metric Conversion Tool

What are the best metric conversion tool apps for iPhone?
Metric Conversion tool tops our metric conversion tool apps ranking as of September 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 tool apps we rank are free to download, including Metric Conversion tool and Unit Converter - Best Unit App.
Metric Conversion tool has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ metric conversion tool apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
The app is a comprehensive unit and currency converter. It allows users to convert between a vast number of units, including weight, temperature, length, area, volume, speed, time, angle, pressure, and currency. It aims to provide accurate conversion results with a user-friendly interface.
Key features include an easy-to-use interface, offline functionality, support for over 30,000 unit conversions, and over 160 currencies with live exchange rates. It also allows users to store favorite conversions for quick access and provides answers in fractions where needed, with results up to 5 decimal places.

Related searches

free metric conversion tool