Showcasing the beauty of Nixie tubes that were used from the 1950's and are still available until today.

Nixie tubes use layered vacuum tubes to show digits and have a characteristic orange glow. Nixie Calculator provide basic arithmetic functions consistent with the original devices - with a few modern additions.

Features of Nixie Calculator:
• Menu bar item. Can be used to easily launch the full Calculator or a Menu Bar version.
• Paper tape to display what you have entered. Can be copied, saved or printed
• Paper tape can be used to paste results back into calculations
• Conversions for common measures
• Copy and paste entries
• Dark mode support
• Can be resized
• International number formats

Preferences available:
• Color schemes
• Calculator size (can also be resized by dragging on the window)
• Rounding options - including showing trailing zero's.
• Use classic Nixie font for the display
• Classic key font
• Show menu bar item
• Dark mode support
• Separators embedded with the digits
• Classic pyramid and illuminated thousand separators
• Classic red filter

The calculator is a rounding or truncating type to fit numbers into the fixed display.

Please enjoy this calculator that combines one of the first display technologies with state of the art in PC technology.

What’s New

Version 1.64

A number of updates:

You can now Right Mouse Click on the Display Digits or the Conversion screen to easily access menus.

Conversions can now be copied to the paper tape.

The Status Bar Calculator now includes the Paper Tape, Conversions and the Right Mouse Click menus. 

A new Preference is available in Decimal Places to display a fixed number of decimal places. Useful to show trailing zero's - an accountant format.

The Status Bar Item right click menu has also been improved.

Ratings and Reviews

4.5 out of 5
4 Ratings

4 Ratings

@Tuan le ,


very good it keeps last data

App Privacy

The developer, UNB SYSTEMS PTY LTD, 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


  • Family Sharing

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

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