No categories to browse. No ads to dismiss. Just start typing—it’s as simple as this.
Built to stay. Out of your way.
-No Interruptions. Zero ads, zero banners—focus entirely on the task at hand.
-No Accounts. Open the app and start converting. We don't track you, and we don't require a login.
-Unplugged. Every conversion engine is built to work 100% offline. From remote job sites to the heart of the kitchen, your tools are always ready.
-Make the app your own by adding custom units. Choose your preferred output—decimal, scientific, or fractional—and save your most frequent conversions as Favorites for one-tap access.
Precision you need, at lightning speed.
-Convert to fractional inches with selectable precision—down to 1/16", 1/32", or beyond. Include conversion to fractional inches with ability to select accuracy (1/8, 1/16 etc). For example 35.235 cm -> 13 7/8" or 13 28/32" depending on the level of precision chosen.
-Include conversion from "feet inches" and to "feet-inches". For example convert 6' 4" -> 193.040 cm. Convert 282.43 cm -> 9' 3 1/4".
-Effortlessly bridge the gap between "Feet-Inches" and metric. Move from 6' 4" to centimeters and back again with surgical accuracy.
-Perform basic math and input fractions directly into the conversion field. It’s a calculator and a converter, perfectly in sync.
Infinite range, for every exchange.
-Always Current. Access live exchange rates that stay cached for offline use when you’re off the grid.
-Depth and Breadth. Whether it’s running pace, shoe sizes, or mass-to-volume for the perfect bake, we’ve covered the essentials and the obscure.
-Industrial Strength. Professional-grade support for flow rate, torque, force, viscosity, and density.
I'm not a big reviewer, but I had to this time. Oh my god how hard was it to do what this program does? Thank you. I work alot with CAD modeling real world objects as an Industrial Designer. Being from the States I'm always converting between decimal inch and metric. The fact that I can create multiple conversion "rows" for an X, Y and Z axis for example is a GODSEND. I cant count how many times I've converted something, then did a second conversion then forgot the first one. Funny to be so excited about a converter. Bravo
Developer Response
We are happy it’s making your life easier - that was always the goal! Thank you for taking the time to write to us.
SImple but powerful
blakeg
This app looks really simple, but it has ALL the engineering units that I need, even the ones that other apps don't have. The "favorites" functionality is great, as is the ability to evaluate simple math expressions. This is the perfect unit converter for an engineer.
Developer Response
Thank you very much 👍
I use this app often
Tesnusxenos
I speak with friends in China often and we talk about weather and I use this app to convert to Celsius. Today I am using it to type up the measurements in my favorite bread roll recipe.
Developer Response
Thank you for taking the time to review - hearing all this makes us very happy.
Excellent!
OdnWlr
After using this app and comparing its calculations to my own, I couldn't believe how many small errors I had unknowingly made in the past.Thank you for your work and for providing this great app to those of us who aren't so great with hand calculators.
Developer Response
Awesome - glad to hear it 👍
New feature - create custom units.
Bug fixes, stability and style improvement.
Version 6.0
The developer, Nikolay Khotenko, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
