Unit converter, Convert metric

Contains adsIn-app purchases
4.5
6.35K reviews
500K+
Downloads
Content rating
Everyone
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About this app

This Unit converter is the best Conversion calculator app on the market right now because it's made with you and for you. This Unit converter is very intuitive to convert all currencies, weights and measures. Use the powerful conversion calculator to do all your maths in the app. Convert units and metrics.

Unit converter


This unit converter is a simple calculator for units, very easy to use, and very helpful to change measurements from/to imperial metric and universal system calculator.

How to convert units like Miles, Inches, Feet or kilometers?



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

Convert Units



Here is all category included in the measurement converter:

- 🏋️ Weight & Mass Unit: lbs to kgs, kg to lb, kg to pounds or pounds to kilos
- Temperature Unit: Fahrenheit to Celcius - °c to °f
-📏 Convert Distance & Length: Convert Miles to kilometers, Inches to centimeter etc.
- 💧 Volume, quantity et capacity
- Time, duration and period: Second, Minute, Hour, Day, Week, Month, Year
-📏 Size
- Speed
- Computer memory unit
-⚡️ Energy, power, heat and thermodynamics
-⛽️ Fuel consumption
- 💡Electricity Unit
- 💲Currency: with forex trading currency exchange rate
- 👠 Shoes and clothes size converter (men, women, kids, and babies)
- 📐 Angle
- Force
- Pressure
- Flow

Why using a conversion calculator?


Every day, I have many emails asking to add new units, new conversions...
This conversion calculator is an application designed to efficiently convert units of measurement such as speeds, temperatures, time, weight and distances etc.! It will help you make your cooking recipes, maths homework, etc. Convert anything you want.

Help us to make a better conversion calculator



Keep in mind that this converter is constantly evolving. Got an idea for improvement?
Can't find a category? Can't convert units? Please, send me an email to olivier@oworld.fr.

I really want to make this unit converter the best one in the market with your help. I will do my best to reply to your emails as soon as possible. I will update this Conversion calculator every time it's needed.

I look forward to your thoughts. This Unit converter can solve everything.
Updated on
Apr 18, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity and App info and performance
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.5
6.09K reviews
Eva-James Watts
November 18, 2020
I just installed, it seems to have a great way of giving all possible conversions (lengths /widths) unfortunately it takes to long to open upon initiation and then its flooded with advertising, too bad! I like the layout/accuracy but quick use is also essential. unfortunately I believe I will be uninstalling... it should be faster than googling the conversion! good luck!
35 people found this review helpful
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oWorld Software - App for everyday !
November 18, 2020
I regret that you did not like the app, but thanks for the feedback. You can remove the ads with an inapp purchase.
A Google user
March 16, 2020
Full of spam. Basically there is no option to not seeing "relevant" adds. Which means that they are coockies watching my interests. So, I don't care how much effort do you do for this product, but I don't want that in my cellphone. Just simple. Normally if you have the paid option, there is an option to see relevant adds and another one to see less relevant adds. I would have chosen that one, but it wasn't as an option. So, no way. Sorry.
15 people found this review helpful
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oWorld Software - App for everyday !
March 16, 2020
Hi, We are really sad to see your ratings for our app. Can you please share detailed feedback about the app at olivier@oworld.co? We assure you that we are working really hard to provide you the best of experience when it comes to shopping.
Paul Inman
January 10, 2023
I purchased the full package, and It said it went through, I went on to find it out it hasn't fully unlocked everything, I brought it again to find out it hasn't worked again, I'm out of pocket for unlocking twice now
9 people found this review helpful
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oWorld Software - App for everyday !
January 10, 2023
Hi, can you please try rebooting your device. Please contact us from the parameter screen if the issue persists. And you can't be invoice twice for the same item, please contact us if it's still not working.

What's new

Add new category: Date, Percentage, Ratio, Circle conversion
Add Bra category
New interface, feel free to email at olivier@oworld.co to tell me what you think.
Add a privacy policy on the settings menu
Add combine units like ft + in etc.
New interface for scale categories
New category and new units!
Add a tutorial
Add a favorites category for quicker conversion
New category and new units!