Best Unit Conversion Apps for Android: Convert Anytime, Anywhere

Have you ever been in a situation where you have to convert something, but you are not very strong at maths and physics? Well, I get you. Sometimes you just can’t concentrate, and you are not sure of your answer. You want to check it somewhere.

Sure, you can Google it, but maybe you don’t have an Internet connection. Maybe you don’t have the time to be Googling. You need the answer now. You can find anything online – from essay writing services (by the way we tested a LOT of services, but essay writer by Essayservice is our #top recommendation), to tutorials, instructions, and various tools.

Well, unit conversion apps are your lifesavers. They are always on your phone, you don’t need an Internet connection for them, and you get instant results.

Person typing on phone

Also, if you do it often, you’ll most likely learn some conversions by heart, and it’s always good to know these things. However, if you don’t want to get an app for it, Unit Conversion is a website where you can get answers fast and easy. There are several unit types and a long list of units to choose from. The website is minimalistic and straight to the point. 

Keep reading to find out about the best unit conversion apps for Android. All of them are free and really easy to use. No matter what you need it for, whether it is for work, school, or cooking, you can find something that works for you.

1. Unit Converter

Unit Converter icon and title

Unit Converter is a smart and elegant app with more than 44 categories of units used in your everyday life. It has an extensive range of features, all found on an easy to use interface. You don’t have to worry about the app taking up too much space on your phone because it takes up less than 4 MB of storage. The icons are aesthetically pleasing and laid out neatly and logically.

All of the units are gathered in different categories, such as Common, Engineering, Fluids, Electricity, Light, Time, and more. The app also features a built-in real-time currency converter that has 150-word currencies and their latest exchange rates. Unit Converter doesn’t just offer simple conversions, but also smart tools such as a compass, stopwatch, ruler, world time, protractor, and more.

There are also tools for working out some common mathematical problems as well as financial calculators. You can work out a conversion for anything in your daily life, including volume, speed, weight, and much more. A useful feature is the offline currency conversion, which you can use in cases you don’t have an Internet connection. The premium version allows you to remove ads as well as add your own custom units.

2. Engineering Unit Converter

Engineering Unit Converter name and icon

Engineering Unit Converter is another app that is very clean and easy to use, but this one is focused on one particular field. The final goal of this app is to keep conversion simple. All you have to do is enter a number and watch it being converted from one unit to another. Unit types include basic ones such as length and mass, as well as more advanced ones such as kinematic viscosity and magnetic flux.

There are over twenty units available, including flow, velocity, temperature, area, and more. This may appear as if the app doesn’t have that many features, but that’s the whole point. Simple, easy, and fast. The app is clutter-free and straight forward. It’s perfect if you are in a rush and don’t want to spend time searching among many different units.

3. All-In-One Calculator

All-In-One-Calculator icon and title

While this one is primarily a calculator app, it is a capable conversion app as well. It’s free and effortless to use. All-In-One-Calculator helps you solve everyday problems, simple and complex calculations, unit and currency conversions, percentages, proportions, and more. It has more than 75 calculators and converters, all in one simple, scientific calculator. You can decide what kind of layout you want for your calculator and see your calculation history.

It has different categories when it comes to converters, including a currency calculator, which is available offline. A handy feature called smart search allows for faster and easier navigation. The unit conversion part of this app covers all of the basics such as temperature and length and things like shoe and ring size. You can customize the look of the app with different color schemes as well.

4. Electrical Converter

Electrical Converter icon and title

As you can guess by the app’s name, its sole focus is converting electrical units. With it, you can convert one common unit into another one. Electrical Converter was developed in a flutter framework and features a nicely designed interface. This converter is perfect for those working or studying in the electrical or electronics field.

There are 15 unit types you can choose from, and they are laid out in a tile format. Once you tap on the unit you want to use, it will take you to another screen where you enter your quantities and units. The common voltage converter covers more than 12 electrical unit conversion charts and categories. This app also provides you with a brief explanation of what each unit type is. 

5. Unit Converter by SmartTools

Unit Converter Smart Tools icon and name

Unit Converter is a very clean-looking app that displays just a few units at a time so you can easily its appearance. Sometimes, when you have a long list of units and features, you can get lost and waste time searching for something, but with Unit Converter, you have what you need, and it’s edited to your liking.

The units are grouped into four categories, Basic, Living, Science, and Misc. Basic includes length, area, weight, and volume. Living contains exchange rate, temperature, time, speed, shoes, clothing, hat, and ring. Then, there is Science with pressure, force, work, power, torque, flow, current, voltage, and more.

The last category, Misc, includes angle, data, cooking, time zone, blood sugar, and more. As you can see, there is a lot to choose from, and all units are those you use in your daily life. The app is easy to navigate, and it’s great if you mostly convert the same things. Also, if you watch one video ad, the ads will be removed for 6 hours.

6. Unit Converter Pro

Unit Converter Pro icon and title

While the name says Pro, the app is completely free, doesn’t have any ads, and doesn’t require in-app purchases. With it, you can convert various units, such as depth, currency, data, and more. Unit Converter Pro displays the most common units used in everyday life, but it also has the option to show you more advanced units, including capacitance, frequency wavelength, and more.

The units are listed alphabetically so you can easily find what you are looking for rather simply. If that’s still too much scrolling for you, you can also use the search feature. The units can be edited, their order and visibility changed. It’s easy to hide any units you know you won’t use and keep just those you might need. The app also offers currency conversion, which is updated daily. 

7. Super Unit Converter

Super Unit Converter icon and title

Super Unit Converter is another completely free app with no ads and no in-app purchases. It’s very simple and easy to use and features conversions for almost everything you could need on a day-to-day basis. All you have to do to start the conversion is select the units and enter your value. There are multiple categories available like acceleration, angle, area, distance, energy, mass, power, and much more.

The app is also very customizable. You can hide things you are not using and keep just the ones you need. The user interface is nicely designed and allows for quick conversions. The goal is not to overwhelm you with an excess of options and settings but to allow you to do it on the go.

8. Unit Converter Ultimate

Unit Converter Ultimate icon and title

Unit Converter Ultimate is very easy to use. Its minimalistic user interface allows you to quickly find what you are looking for without getting lost in a storm of unnecessary settings and options. While converting, you can select the units you need right under the number, and you can also change them at any moment. All units of measurement this app contains are combined in groups.

Available unit conversions include currency, temperature, length, mass, speed, area, energy, and much more. You can use the slide-in menu for navigation between conversions and select the units. To open the menu, just swipe in from the left edge of the app. The app is completely free and has no ads. It is available in a different language and has two modes, light and dark.

9. All-In-One Unit Converter

Unit Conversions icon and title

All-In-One Unit Converter is a no-fuss conversion tool that contains more than 2000 units of measurement. It also includes a currency converter and a classy calculator. The app is perfect for work, school, engineering, or just everyday life. It’s great for professional purposes, and the calculator works even for long expressions and subjects like radiology, electricity, fluids, heat, or light.

The app’s general unit conversion part includes conversion factors for acceleration, angle, length, energy, frequency, power, and more. The app supports both metric and imperial units. Plus, you can adjust the precision and format of the result, and it can be used in offline mode. 

10. ConvertPad

ConvertPad image and icon

ConvertPad is a powerful unit converter, calculator, and currency converter. It’s simple, intuitive, and easy to use. The app includes fast, real-time currency and unit conversion on a simple interface. It also provides you with a unit comparison table, direct arithmetic calculation, country-specific units, and also Wikipedia search for more information. ConvertPad supports more than 160 currencies, and you have the option to select your favorite exchange rate.

It supports 25 languages and two preferences as primary and secondary languages. You can also customize your own units by inserting their name and the function for necessary calculations. It has a variety of different units of measurements such as length and speed, but also those like clothing and shoe sizes.

Final thoughts

If you are someone who can’t do conversions off the top of their head, unit conversion apps are made for you. You can also use them for work and school or simply be interested in something you need at that particular moment. Mentioned here are the best unit conversion apps for Android that you can download for free. Plus, when you think about it, it’s always handy to have one on your phone. Just in case you need it.