• Unit Converter 1
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Unit Converter

Unit converter is the 6th set of Smart Tools® collection. This app includes Currency (money, bitcoin) exchange rates.
There are a lot of unit conversion apps on the market. However, most are inconvenient and difficult to use because of poor and complicated UI.This app has intuitive and simple UI, that is designed for casual user like you. Believe me. :)

I've sorted essential unit sets for your daily life into 4 categories.


- Basic : length (distance), area, weight (mass), volume (capacity)
- Living : exchange rate, temperature, time, speed, shoes, clothing, hat, ring
- Science : pressure, force, work (energy), power, torque, flow, current, voltage, density, viscosity, concentration, astronomy
- Misc. : angle, data, fuel efficiency, cooking, illuminance, radiation, prefix, binary, time zone, blood sugar, AWG

It shows different unit sets depending on user's country. When you need more units, please send me an email. [email protected]


* Do you want ad-free version? download [Unit Converter Pro].

For more information, watch YouTube and visit the blog. Thank you.


★ android.permission.INTERNET : for receiving the latest exchange rates.

Category : Tools

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Reviews (26)

Bif. S. May 25, 2022     

Very handy app. I'd give it 5 stars if the ads hadn't become overly aggressive, forcing you to watch a few seconds of video before you can proceed. Docking a star for that.

K. R. Apr 27, 2022     

It's okay, the main drawback being a noisy advertisement every time you open it. If there was a "paid" ad-free version it'd be worth using.

One. W. Mar 5, 2022     

RARELY do I give 5 stars, but I've used this app, on and off, for ages. It's very good and has many different types of conversions. Please don't change the app logo on the Play shop; that would make it hard to find if (when!) I break my phone's screen and need to buy another one and reinstall the app!

gee. d. May 23, 2022     

Didn't Last Long!! 👎🏿 I was disappointed to see full page apps within minutes of installing the app. Also disappointed that there wasn't an entry for UK Stones and Pounds (how people of my generation weigh themselves). You have to do the decimal conversion first in order to get the correct results. Sort those two annoyances out and you're on to something.

Rho. V. Feb 9, 2022     

Very confused how to use this app, it looks simple, I put 1.72 cm in the box on the left and on the box on the right I wanted to convert to feet and inches, it would not do it, instead I had a list of confusing numbers, I have been 30 minutes on this trying to make it work, and nothing makes sense. Deleting this app.

Rog. W. Feb 6, 2022     

A very handy app for those few of us who need to convert one measurement into another multiple times on a regular basis. All sorts of criteria and all sorts of conversions. This app makes my life much easier.

Ved. G. Feb 21, 2022     

Updated review: The app seems to be fixed now as ALL the possible conversions are showing whereas the results were truncated so that the later ones were not displaying when I posted my earlier review. Old review (partial): Very odd as the app seems to be "incomplete". For example, in "Cooking" putting in an input value for "ml" does NOT provide a fl ounce conversion value in the "results" table. However, the option of fl ounce IS in the drop-down input field. Just not in the results table.

Dav. C. Apr 28, 2022     

Used to be a good app, but as per usual it's now advert ridden. Strange as the developers have a pro version they charge for. Plenty of other apps about though. I u der stand if they use the money to develop the app, but this has not changed, just fu ding the Pro version I guess.

Bar. A. May 18, 2022     

Very easy to use. Very handy. You don't need to be a genius, any knuckle head can do it. Great app for this sort of thing.

Mik. C. May 24, 2022     

It's a great app, it converts everything to anything and have had it for years on all my devices.

Ste. H. May 23, 2022     

Easy to use and versatile with all parameters covered, from lengths to volume to currency conversions.

Joh. C. May 3, 2022     

Like the app but lately have trouble opening it without going into play store & clicking on "open "

Buc. B. Jan 10, 2021     

I've had this unit converter app for many YEARS. They recently added intrusive ads; it used to be small ads that didn't get in the way. Now, I get full-page, auto-playing, video ads that can't be skipped for 5+ seconds. The new ads completely block the screen and interrupt the entire process. 🙄😕 No thanks!!! I have installed a new unit converter app (no ads!) and I am uninstalling this app for good. Let me know if you ever remove the full page ads; I might come back and reinstall. 😉

Daz. Aug 12, 2020     

A simple conversion app shouldn't need ads, it's basic features that come in handy. All kinds of apps these days are adding ads to make extra money off users. Otherwise, app works great for converting all kinds of numbers. Speed, volume, length, currency, volts and watts, etc. I appreciate having this kind of knowledge that's easily accessible.

Jac. S. Jun 4, 2020     

Although I used this app for a few years, I uninstalled it as it is no longer has the aspect it had when I first installed it; it is no longer handy. I recently opened it only to be greeted by a long loading screen which was followed by a full screen ad. The loading alone would be enough for me to uninstall the app as it completely eliminated how quick and easy it used to be to get unit conversions.

Max. S. Jul 26, 2020     

Was good, not happy with the new ads. I use this on the occasions that I need to convert something to something else. Has been good but the most recent update has introduced ads to the app. Now you open it and have to wait before you can do what you need to do. Very irritating as it seems a lot of apps are now doing this. I'd rather pay a small fee than have ads. Could also do with adding us quarts to the conversions.

All. P. Nov 24, 2020     

I have been using this app for years, and love it. The ads aren't bad, just saw the first full screen ad that I can remember in the entire time I have been using this app, and it was for 5 seconds. Normally they are a small banner at the bottom of the screen. I also just learned that they now have a paid version called Unit Pro. It's only $2.50 US. Yes, I just paid for the pro version and uninstalled the free version.

Ton. D. Aug 8, 2021     

Excellent. Accurate, reliable, & easy to use. Importantly, the exchange rates correctly reflect currency markets (unsuitable to guide trading, of course, but very helpful to travellers). On this point, I hope that the developers will expand the range of currencies over time. I have had this application on four devices up to now, and the ease of use is very strong.

Rya. R. Jan 10, 2022     

The app works well. The mandatory ad as soon as you open it is annoying but the app maker needs their money so it is what it is.

Col. B. Sep 27, 2020     

No choice of the unit you're converting to which results in an overload of numbers and units to scan through. You can't reorder the results or hide the results that will never be relevant to you. You can certainly make it work but there are customizable options out there. Didn't see any ads in my 10 minutes in the app but the other reviews references to video ads are not promissing.

A. G. u. Jan 28, 2019     

does what it says on the tin, been using it/updating it since 2015. re:international currency use, personal between pals, UK/US only, but always spot on. temperature and distance measures US/imperial/metric, easy-peasy. I've no used it for academic chemistry/physics, as am out of school, etc., but I'd trust it for laboratory applications that did *not* involve possible loss of life, without a second thought, tho it's prolly good enuff, even for critical applications.

Gar. F. Jun 3, 2020     

I think this app is superb and so easy to use. For example, select length, select mm in the box, type in the length and you then have the number converted into a multitude of different units. You also have weight, area, volume and a load of great little ones in the misc section such as converting a U.S Cup (used for recipes) which will convert into teaspoons, dessert spoons, table spoons etc. A real handy app which I think everyone would find a use for at some point.

A. G. u. May 25, 2022     

Great and easy to use. Accurate up to date and fast.

Mia. S. May 21, 2022     

I'm swedish and constantly have to check English measurements, so very useful. Thx Mia

Gri. A. M. May 17, 2022     

It was great.. Until the new update now middle east currency not available 😡

she. b. Feb 16, 2021     

Looks like easy to understand the way it works and accurate. But the thing is, the pictures shown from the play store looks way different from what it really is. (For example, the "Living" thingy, theres no shoe sizes or anything like that. But nice app thank you.