Best Free Metric Conversion Tool Apps

Length Mass Speed Converter

(0)

15 measurements categories

Distance/length conversionsArea conversionsVolume conversions

Easily convert between various units of measurement across 15 categories, including length, mass, volume, speed, and temperature. Offers a premium subscription for advanced features and an ad-free experience.

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Unit Converter

Conversion Calculator

Broad conversion spectrumPersonalizable themesUser-friendly interface

This app offers a wide range of unit conversions for various measurements, from temperature to length. It features a user-friendly interface, customizable themes, and smart features that remember your frequent conversions. It also links to external apps for specialized tasks.

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Millimeter to Inch conversionInch to Millimeter conversionEasy to use interface

Millimeters to Inches

by Thomas Pelster

$0.99

Easily convert measurements between millimeters and inches in either direction. This utility app is straightforward to use, requires no internet connection, and offers a clean, ad-free experience.

Unit Converter - Best Unit App

(1)

paid

Convert All Units and Currency

20 conversion categoriesLive currency updates155 world currencies

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.

✈️ Travel

(172K)

Measure Master Pro Calculator

Design + Building Math Calc

Multi-dimensional unit conversion (U.S. & metric)Advanced weight calculationsGeometry solutions (circle area, circumference)

This app provides comprehensive U.S. and metric unit conversions and advanced calculations for design and building projects. It offers solutions for geometry, weight, and dimensional analysis, with a user-friendly interface and built-in help.

(4K)

Unit Converter: Mila's Tools

Metric Conversion Calculator +

27 conversion categories300+ unitsCompound unit support

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.

(1.4K)

Converter-Universal Conversion

by Trelleborg Sealing Solutions

Currency converter with live exchange ratesOver 300 engineering and scientific unitsSpecialized hardness converter

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.

Simple unit conversion tool

Converts length, weight, speed, area, time, pressure, volume, power, fuel, temperature, data, and currencyAutomatic currency updates160 currencies available

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.

📊 Productivity

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ad-supported

Unit Converter Calculator Pro

Simple With Metric & Imperial

Metric to Imperial unit conversionImperial to Metric unit conversionArea, speed, temperature, volume, weight conversions

Easily convert between metric and imperial units for a wide range of measurements including area, speed, temperature, and weight. Supports scientific prefixes and offers a history of your conversions. No internet connection required.

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Converter (unit conversions)

by Brent Royal-Gordon

76 measurement units8 common unit typesBuilt-in four-function calculator

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.

(1.9K)

gUnit - Currency & Unit Converter (Conversion)

by Axonic Labs LLC

$1.99

Easily convert between hundreds of units and currencies with lightning-fast results. This app offers an ultra-sleek design and supports various unit variations for US, UK, and Canada. Quickly find and convert with its intuitive search feature.

Fastest unit and currency converterSearch and convert quicklyConfigure units, categories, and favorites

Units - Pro Unit Converter

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free

by Homegrown Software Ltd

Hundreds of units across 43 categoriesDaily updated currency exchange ratesHide unused units

Easily convert between hundreds of units across 43 categories, including currency with daily updated rates. Customize your workflow by hiding or reordering units and categories.

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Unit Converter - Pro Units App

Convert Any Unit

16 conversion categoriesCustom unit listsLive currency exchange rates

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.

🔍 Reference

(16K)

Mila's Unit Converter PRO

Ultimate conversion calculator

$9.99

$29.99 | 67% OFF

Effortlessly convert between hundreds of units across 26 essential categories with this precision calculator. Designed for speed and simplicity, it offers accurate results in seconds for students, professionals, and travelers alike. Enjoy offline functionality and a customizable experience.

Hundreds of units across 26 categoriesMetric, imperial, and specialized unitsSmart conversions for temperature, fuel, and more

Converter+ (Units, Currencies)

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paid

Unit and Currency Converter

Extensive unit and currency conversionMultiple calculators (mortgage, loan, tip)Customizable and downloadable templates

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.

📊 Productivity

(2.3K)

Convert Any Unit or Metric

Unit Plus Converter

Over 100 conversion unitsMultiple categoriesArea conversion

Easily convert between numerous units and metrics with this intuitive application. It offers over 100 common conversion units across various categories, presented in a simple and elegant interface.