Number Pie 4+

Number Conversions

Pork Pie Software Limited

Designed for iPhone

    • 5.0 • 1 Rating
    • $2.99

iPhone Screenshots


Roman Numerals, Binary, Octal, Decimal and Hexadecimal Number Conversion in the palm of your hand! Includes supporting theory and worked examples. Knowledge is Power!

Number system conversions made easy!

As with all our Apps this App provides the underlying maths and theory behind the calculations together with worked examples. This will allow you to not just get an answer, but more more importantly, to understand how the answer was derived.

Number Pie is written to allow you to convert between number systems with ease. The following two features are available within the App:

Base Convert

This feature contains three options that allow the user to enter either a Base 10 Decimal number, Base 2 Binary number or Base 16 Hexadecimal number. The input number is then converted into its corresponding Decimal, Binary, or Hexadecimal equivalent.

Roman Convert

Upon entering either a Decimal number or a Roman numeral number this feature converts the input into its corresponding Decimal or Roman value.

“Written by Engineers for Engineers”

About Pork Pie Software:

Pork Pie Software is a mobile app development company based in New Zealand. Our apps are actually written and coded by real engineers that practice in the engineering area that each app is written in.

All feedback and suggestions are genuinely welcome. As we write our own apps we can quickly update and improve our apps based on your feedback.

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What’s New

Version 1.4

Thanks for using our Number Pie app. We’re constantly improving this app in conjunction with your feedback to make this app even better.

This update includes:

• A new Octal conversion tool with all other tools updated to convert to Octal too.
• Fixed a number of typos and minor bugs.

If you like the app, please leave us a review!

“Written by Engineers for Engineers”

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Pork Pie Software Limited, 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

    Up to six family members can use this app with Family Sharing enabled.

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