This free tool is very intuitive to convert all currencies, weights and measures

This universal converter is a simple calculator, very easy to use, and very helpful to change measurements from/to imperial metric and universal system, but also to convert dollar to euro or yen with updated exchange rate or on offline mode while travelling, to change cup to liter while cooking, to convert liters/100 KM to British MPG, to find the perfect shoes or clothes size in every country…

How to use?

So easy! Choose the type of measure among the icons, then scroll to the two units you are looking for. The tool is ready for the unit conversion!

Here is the full list of each currency and unit included in the measurement converter :
- Weight: Once - Oz, Pound - lb, metric ton, Kilogram - kg, Gram, Milligram - mg, Stone – st
- Temprature: Celsius degre °C, Fahrenheit °F, Kelvin - K, Reaumur scale, Rankine
- Distance, lenght and size: Miles mileage, Yards - yd, Feet - ft, Inches - in, Kilometer kilometre - km, Meter Metre, Centimeter Centimetre - cm, Milimeter Millimetre - mm
- Volume, quantity et capacity: spoon spoonful, dessertspoon, tablespoon, cup, Pinte - pt, Once - flOz, Gallon - gal, Hectolitre Hectoliter, Decalitre Decaliter, Litre Liter, Decilitre Deciliter - dl, Centilitre Centiliter - cl, Mililiter Millilitre - ml, Cubic kilometer - km3, cubic meter - m3, cubic decimeter, cubic centimeter - cm3, cubic centimeter - mm3
- Time, duration and period: Second, Minute, Hour, Day, Week, Month, Year
- Speed: Meter/second - m/s, Kilometer/second - km/s, Kilometer/hour - km/h, Feet/second - ft/s, Miles/second - mi/s, Miles/Hour - mi/h, Knots - kts
- Computer memory, IT, RAM: bit, Kilobit, Megabit - Mb, Gigabit, Terabit, Octet, Kilobyte, Megabyte, Gigabyte, Terabyte
- Energy, power, heat and thermodynamics: Kilowatt-hour - kWh, Watt-second, MegaJoule, kiloJoule - kJ, Joule, Therm, electron-volt - eV, quadrillon (Quad), British thermal (BTU), Foot-pound, kiloCalorie - kcal, Calorie
- Fuel consumption: Liter/km - l/km, Liter per 10 kilometers - L/10km, Liter per 100 kilometers - L/100km, Km/liter, Miles/Liters, Miles per gallon - imperial mpg, gallon per 100 miles
- Electricity: Ampere - amp, MilliAmpere (mA), MicroAmpere, NanoAmpere, KiloAmpere, MegaAmpere, GigaAmpere, AbAmpere, Coulomb/second

And unlock even more units of measurement:
- Currency: with forex trading currency exchange rate. US Dollar ($ USD), Euro (€ EUR), Pound Sterling (£ GBP), Canadian Dollar (CAD), Swiss Franc (CHF), Australian Dollar (AUD), Japanese Yen (JPY), Indian Rupee (INR), Chinese Yuan (CNY), Singapour Dollar (SGD), Peso, BitCoin and a lot more !
- Shoes and clothes size (men, women, kids, and babies)
- Angle, force, pressure, flow

Become more effective, stop ads!

This free tool is sponsored thank to the advertisement. To increase efficiency, you can remove all advertisement for only $5.99. As a free gift, you will also get an instant, full and unlimited access to the whole app!

Help me make this app the best one:
Keep in mind that this application is constantly evolving. Got an idea for improvement? Can’t find a category? Please, send me an email to
I look forward for your thoughts.

What’s New

Version 2.3.19

- New theme for the interface.
- New design, clearer User Interface. Let me know what you think at
- Support iOS 12
- Support iPhone Xs, Xs Max, XR
If you have any feedback, feel free to email me at, I'm happy to help!

Ratings and Reviews

4.1 out of 5
688 Ratings

688 Ratings

mesYngr ,

iPad/Multitasking Support

I was wondering if there were any plans for iPad landscape and multitasking support to be built into this app. I like the apps functionality, but use on an iPad is hindered because it only works in landscape and can’t be used in Split View or Slide Over. I’d even pay extra for those features. Thanks

Healthy Cuisinist ,

Poor maneuvering

When I went use this app, I needed a fraction of a cup. I went into the volume section of the app, and proceeded to enter in my data. The only problem was, there was no “.” On their built-in keypad. Instead there was a button that look like a button to go to another keypad which might contain the “.” Button. When I press this, it led me back to the main conversion type selection screen. And in the one minute that I was actually using the app, I got three different advertisements popped up in my face. This made it very cumbersome to actually get any work done. I wasn’t even able to try this stuff out because the app was not programmed in a way that makes any sense to the user.

Developer Response ,

Hello, I'm sorry about your experience. I just fix the mistake about the "." it, you will see the "." next to the "+" on the keyboard. Thank you for the feedback.

Afrayka ,

Problems with the upgrade are easily solved.

Just upgraded to the full pack with no ads but didn't initially see any changes. Contacted developer and they got back to me quickly; guided me to the settings menu in the app and Iclicked "restore in app purchases". The upgrade is all good now and this app seems like a clean, simple, and helpful tool I will no doubt use quite often. Like many, I hated the pop up ads and happy to pay for the upgrade.

Developer Response ,

Hi, please write to, I will be able to help you. You don't have to buy another pack. You can try to restore the in app purchase, it should fix the issue. I'm sorry about the inconvenience.


oWorld Software
74.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Simplified Chinese, Spanish, Traditional Chinese

Age Rating
Rated 4+
© oWorld Software
In-App Purchases
  1. All unit conversion + No ads $3.99
  2. Currency Converter, convert it $0.99
  3. Conversion of angles, forces $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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