Engineering Unit Converter3.0 - App Store
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Publisher Description
A streamlined, powerful, user-friendly unit and currency converter designed for use by everyone and built by engineering professionals! No dials to turn, no gimmicky interfaces, no need to type your unit... just enter a value in the unit you have and see the conversion for the one you want as well as others all at once. All laid out in big, easy to read text with an intelligent, customizable display system.
There is also a versatile Currency converter included in the app!
The app also includes a powerful built-in Calculator and a spreadsheet-style Mass Fraction/Mole Fraction Converter. Also included are a very useful Thermocouple module and a database of physical constants.
Conversions aren't limited to just one pair of units. There are 40+ different types of units currently in the app. Set your preferred units or most frequently used units for quick access to the data most needed. Don't want to see all of the units in a given category? You can reorder and hide units based on your needs.
The app is designed to accept mathematical expressions as your input! For example, if you need to convert 1 3/8 inches to mm, just enter 1+3/8 in the inches cell... and you can do far more complex operations as well! Detailed math help is available under Settings+.
As another bonus, we have provided a control panel that can be used to tailor the colors of the app to the user's preferences. You'll find this feature under Settings+. While you're there, check out the links to our other apps and find us on social media!
Like us on Facebook: www.facebook.com/ChemEApp
Follow us on Twitter: @Vector254
Version History Unlocked the app special features for all users as a Christmas present.
Fixed a bug that would crash the app when entering units.
Disabled the currency converter until we find a new data stream.
Fixed an error in the conversion factor for g/L in density. 3.0 12/20/2017 We've been working on new ways of using unit conversions in complex ways. We've added a 'Gas Constant Converter' to the Premium Units. Those who have already purchased the 'Unlock App' in-app purchase will receive this for free.
Three new unit categories have been added, including: 'Velocity (Angular)', 'Fuel Efficiency (Volume)' and 'Diffusivity'.
Fixed issues where some very large or small conversions would yield zero values. Thanks to @Calvincookieman.
Made the code more lightweight.
Follow @Vector254 on Twitter! 2.8 11/04/2016 Added a few units to specific enthalpy and specific entropy.
Added two definitions for standard cubic feet values in moles and flowrate (molar) categories. Thanks to one of our users for suggesting this!
Other minor bug fixes and enhancements. 2.7.1 11/20/2015 We've done a bit of housekeeping to streamline navigation through the app! Switching between the calculator, currency converter and premium modules is now much easier and faster through a toolbar added to the main interface.
Selecting/adding/removing currencies in the currency module is now much more efficient. We've also added conversions for Bitcoin, gold, silver, platinum and palladium.
We've also rearranged some features from the prior release. The NIST menu is going away (for now) and we've made Thermocouples and Constants into their own separate modules, which are now only available to users who have purchased the "Unlock App" in-app purchase. The Math Help menu has been moved to the calculator.
As always, we've made other bug fixes and minor enhancements. 2.7 11/05/2015 We've added modules that utilize NIST standard reference data to the app! These include a really cool thermocouple calculator, values and symbols for over 300 physical constants and information on elements and compounds. For a limited time, these features will be available to all users After the next update, these new features will only be available to those who have purchased the "Unlock App" in-app purchase. We'll continue to add information like this moving forward as we make Engineering Unit Converter & Calculator a go-to source for science & engineering information and calculations!
Other bug fixes and minor enhancements. 2.6 10/01/2015 Due to an issue that was beyond our control, the Currency converter module may have stopped working for some users. This update fixes that issue.
Other bug fixes and minor enhancements have also been addressed.
Like us on Facebook at www.facebook.com/ChemEApp
Follow us on Twitter: @Vector254 2.5.2 03/20/2015 In order to focus on improving the experience for all users, ads have been temporarily removed from the app.
Links to historical currency charts are now available in the Currency Converter. Just click the chart icon under the there letter currency code.
A descriptive detail label has been added for each unit category.
The Calculator module is now only available again to paid users, and can be unlocked via the in-app purchase! 2.5 01/20/2015 First update of 2015! Use of the Calculator is open to all users for a limited time until we release the next update.
Added 'Torque' to the list of units.
Link to our Twitter feed @Vector 254 added to Settings+
Bug fixes & other minor enhancements. 2.4 01/09/2015 A Calculator has been added to the app! And its not just any old calculator! Introducing the "Command Line Calculator". Use your keyboard to calculate values, but also to define variables and call functions! Command Line Calculator is unlocked as part of the "Remove Ads" in-app purchase.
Also, the Mass to Mole Converter is also now part of the "Remove Ads" in-app purchase. Those who have already purchased "Remove Ads" will receive the Calculator and Mass to Mole Converter for free.
We've also added an enhanced "Math Help" menu for everyone that provides an index of the functions that can be used as inputs in the converter cell and the calculator. Access this feature under Settings+.
An improved rounding algorithm has been implemented to better show calculated values in standard or scientific notation.
As in every update, we've implemented bug fixes and other minor enhancements to continuously improve the best unit converter available! 2.3 12/04/2014 Added support for iOS 8.
In preparing for some very cool future updates, we've added a few new unit categories that are available to everyone for free. We'll be adding more content to these in the near future.
Check out links to our other awesome apps under 'Settings+'.
As in every update, we've fixed bugs and made other minor app enhancements. 2.2 10/08/2014 Customize the color scheme of Engineering Unit Converter to your preferences! Set the app to the colors of your favorite college team or whatever you like! 48 colors are available to mix and match.
As an incentive to remove ads from the app, we have built an interface that allows the user to control the appearance of the main screen and unit converter cells. Once "Remove Ads" is purchased, the color control module will be enabled under 'Settings'. Those who have already purchased "Remove Ads" will see this enabled automatically. 2.1 09/03/2014 Added a few new units under mass and moles.
Resolved issue with unit preferences.
Other minor tweaks and enhancements. 2.0.2 08/29/2014 Fixed an issue where the user preferred units were not saved. 2.0.1 08/28/2014 Lots of new features in 2.0! We've even added a few new unit categories.
New look, easier to read unit conversion tables. We've improved the conversion results to better balance the display between decimal and scientific notation as needed.
Units in each category can be reordered or hidden according to user preferences... keep the units you use most frequently at the top of the table or hide units you don't need. Look for the button on the top right of the table.
Other minor improvements and bug fixes. 2.0 08/27/2014 Added an inverse label to currency converter cells for ease of use. This is a convenient feature to quickly ascertain the relative value of the 'to' currencies.
Improved precision in certain mass, length and area units. 1.9.3 07/30/2014 Fixed issues relating to iOS 6 functionality, so those users are able to use the app again.
Engineering Unit Converter is optimized for iOS 7. 1.9.2 06/12/2014 Improved precision on certain unit conversion factors.
Minor improvements and bug fixes. 1.9.1 06/02/2014 Added a 'Currency' converter... look for the bright green cell and check it out!
Minor improvements and bug fixes. 1.9 05/21/2014 We added the ability to do math in the converter cells. Need to convert 1 5/8" to mm? There's no need to calculate 1 5/8 = 1.625 in your head first... Just enter 1+5/8 in the cell! Want to multiply 273.15 degrees C by 3 and convert to degrees F? 273.15*3 in the cell! Any valid mathematical expression will work, including constants like 'pi', 'rho', 'phi' and functions like sin( ), e^( ), cosh( ), sqrt(), factorials (i.e. 4!), etc.
Minor tweaks and improvements to the Mass/Mole Converter interface and workflow.
Other minor improvements and bug fixes. 1.8.1 05/02/2014 We're evolving the concept of what a Unit Conversion app should be!
This update offers a powerful and easy to use mass/mole converter as an in-app purchase. Quickly obtain composition data for an array of 2 - 100 compounds!
Other minor fixes and tweaks also included. 1.8 04/26/2014 User can make in app purchase to remove ads
Enabled keyboard scrolling
Increased number of significant figures displayed
Visual improvements
Other minor improvements and bug fixes 1.7 03/31/2014 Corrected issue with acre conversion factor.
Added kW (kilowatts) to power units.
Updated look of app.
Compatible with iOS 6.0 and up. 1.6 02/27/2014 The user interface has been updated with the addition of a ton of engineering units. 1.5 05/24/2013 The converters were updated and corrected in some cases. The app no longer requires any Go or Clear buttons. 0.2 05/17/2012 0.1 10/05/2011
About Engineering Unit Converter
The company that develops Engineering Unit Converter is Vector 254 LLC. The latest version released by its developer is 3.0.
To install Engineering Unit Converter on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-15 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Engineering Unit Converter as malware if the download link is broken.
How to install Engineering Unit Converter on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Engineering Unit Converter is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After Engineering Unit Converter is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 3.0
posted on 2026-10-15
Version History Unlocked the app special features for all users as a Christmas present.
Fixed a bug that would crash the app when entering units.
Disabled the currency converter until we find a new data stream.
Fixed an error in the conversion factor for g/L in density. 3.0 12/20/2017 We've been working on new ways of using unit conversions in complex ways. We've added a 'Gas Constant Converter' to the Premium Units. Those who have already purchased the 'Unlock App' in-app purchase will receive this for free.
Three new unit categories have been added, including: 'Velocity (Angular)', 'Fuel Efficiency (Volume)' and 'Diffusivity'.
Fixed issues where some very large or small conversions would yield zero values. Thanks to @Calvincookieman.
Made the code more lightweight.
Follow @Vector254 on Twitter! 2.8 11/04/2016 Added a few units to specific enthalpy and specific entropy.
Added two definitions for standard cubic feet values in moles and flowrate (molar) categories. Thanks to one of our users for suggesting this!
Other minor bug fixes and enhancements. 2.7.1 11/20/2015 We've done a bit of housekeeping to streamline navigation through the app! Switching between the calculator, currency converter and premium modules is now much easier and faster through a toolbar added to the main interface.
Selecting/adding/removing currencies in the currency module is now much more efficient. We've also added conversions for Bitcoin, gold, silver, platinum and palladium.
We've also rearranged some features from the prior release. The NIST menu is going away (for now) and we've made Thermocouples and Constants into their own separate modules, which are now only available to users who have purchased the "Unlock App" in-app purchase. The Math Help menu has been moved to the calculator.
As always, we've made other bug fixes and minor enhancements. 2.7 11/05/2015 We've added modules that utilize NIST standard reference data to the app! These include a really cool thermocouple calculator, values and symbols for over 300 physical constants and information on elements and compounds. For a limited time, these features will be available to all users After the next update, these new features will only be available to those who have purchased the "Unlock App" in-app purchase. We'll continue to add information like this moving forward as we make Engineering Unit Converter & Calculator a go-to source for science & engineering information and calculations!
Other bug fixes and minor enhancements. 2.6 10/01/2015 Due to an issue that was beyond our control, the Currency converter module may have stopped working for some users. This update fixes that issue.
Other bug fixes and minor enhancements have also been addressed.
Like us on Facebook at www.facebook.com/ChemEApp
Follow us on Twitter: @Vector254 2.5.2 03/20/2015 In order to focus on improving the experience for all users, ads have been temporarily removed from the app.
Links to historical currency charts are now available in the Currency Converter. Just click the chart icon under the there letter currency code.
A descriptive detail label has been added for each unit category.
The Calculator module is now only available again to paid users, and can be unlocked via the in-app purchase! 2.5 01/20/2015 First update of 2015! Use of the Calculator is open to all users for a limited time until we release the next update.
Added 'Torque' to the list of units.
Link to our Twitter feed @Vector 254 added to Settings+
Bug fixes & other minor enhancements. 2.4 01/09/2015 A Calculator has been added to the app! And its not just any old calculator! Introducing the "Command Line Calculator". Use your keyboard to calculate values, but also to define variables and call functions! Command Line Calculator is unlocked as part of the "Remove Ads" in-app purchase.
Also, the Mass to Mole Converter is also now part of the "Remove Ads" in-app purchase. Those who have already purchased "Remove Ads" will receive the Calculator and Mass to Mole Converter for free.
We've also added an enhanced "Math Help" menu for everyone that provides an index of the functions that can be used as inputs in the converter cell and the calculator. Access this feature under Settings+.
An improved rounding algorithm has been implemented to better show calculated values in standard or scientific notation.
As in every update, we've implemented bug fixes and other minor enhancements to continuously improve the best unit converter available! 2.3 12/04/2014 Added support for iOS 8.
In preparing for some very cool future updates, we've added a few new unit categories that are available to everyone for free. We'll be adding more content to these in the near future.
Check out links to our other awesome apps under 'Settings+'.
As in every update, we've fixed bugs and made other minor app enhancements. 2.2 10/08/2014 Customize the color scheme of Engineering Unit Converter to your preferences! Set the app to the colors of your favorite college team or whatever you like! 48 colors are available to mix and match.
As an incentive to remove ads from the app, we have built an interface that allows the user to control the appearance of the main screen and unit converter cells. Once "Remove Ads" is purchased, the color control module will be enabled under 'Settings'. Those who have already purchased "Remove Ads" will see this enabled automatically. 2.1 09/03/2014 Added a few new units under mass and moles.
Resolved issue with unit preferences.
Other minor tweaks and enhancements. 2.0.2 08/29/2014 Fixed an issue where the user preferred units were not saved. 2.0.1 08/28/2014 Lots of new features in 2.0! We've even added a few new unit categories.
New look, easier to read unit conversion tables. We've improved the conversion results to better balance the display between decimal and scientific notation as needed.
Units in each category can be reordered or hidden according to user preferences... keep the units you use most frequently at the top of the table or hide units you don't need. Look for the button on the top right of the table.
Other minor improvements and bug fixes. 2.0 08/27/2014 Added an inverse label to currency converter cells for ease of use. This is a convenient feature to quickly ascertain the relative value of the 'to' currencies.
Improved precision in certain mass, length and area units. 1.9.3 07/30/2014 Fixed issues relating to iOS 6 functionality, so those users are able to use the app again.
Engineering Unit Converter is optimized for iOS 7. 1.9.2 06/12/2014 Improved precision on certain unit conversion factors.
Minor improvements and bug fixes. 1.9.1 06/02/2014 Added a 'Currency' converter... look for the bright green cell and check it out!
Minor improvements and bug fixes. 1.9 05/21/2014 We added the ability to do math in the converter cells. Need to convert 1 5/8" to mm? There's no need to calculate 1 5/8 = 1.625 in your head first... Just enter 1+5/8 in the cell! Want to multiply 273.15 degrees C by 3 and convert to degrees F? 273.15*3 in the cell! Any valid mathematical expression will work, including constants like 'pi', 'rho', 'phi' and functions like sin( ), e^( ), cosh( ), sqrt(), factorials (i.e. 4!), etc.
Minor tweaks and improvements to the Mass/Mole Converter interface and workflow.
Other minor improvements and bug fixes. 1.8.1 05/02/2014 We're evolving the concept of what a Unit Conversion app should be!
This update offers a powerful and easy to use mass/mole converter as an in-app purchase. Quickly obtain composition data for an array of 2 - 100 compounds!
Other minor fixes and tweaks also included. 1.8 04/26/2014 User can make in app purchase to remove ads
Enabled keyboard scrolling
Increased number of significant figures displayed
Visual improvements
Other minor improvements and bug fixes 1.7 03/31/2014 Corrected issue with acre conversion factor.
Added kW (kilowatts) to power units.
Updated look of app.
Compatible with iOS 6.0 and up. 1.6 02/27/2014 The user interface has been updated with the addition of a ton of engineering units. 1.5 05/24/2013 The converters were updated and corrected in some cases. The app no longer requires any Go or Clear buttons. 0.2 05/17/2012 0.1 10/05/2011
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