Can you please recommend any software / tool (for Windows 7 and Android) for memory sizes calculation (Bits / Bytes) like numerical calculator. For eg. input 12.5 GB + 5.8 MB + 1392 KB then click on Calculate button it should show the result.

  • 1
    Show the result in what capacity? Commented Jun 10, 2014 at 15:36

2 Answers 2


Google or WolframAlpha

Although both websites require an Internet connection, it's as simple as it probably can get as far as the input method is concerned:

  1. Open Google or WolframAlpha in a web browser.
    WolframAlpha has also got an app.

  2. Enter 12.5 GB + 5.8 MB + 1392 KB.
    Optionally provide the desired output unit: 12.5 GB + 5.8 MB + 1392 KB in MB

In Windows PowerShell already has that capability. Numbers can take suffixes that represent the units in base 2. Just type 12.5GB + 5.8MB + 1392KB and you'll have the size in bytes. To convert to other units divide by the corresponding unit

PowerShell calculate size

If you need to use decimal units then scale the values manually: 12.5e9 + 5.8e6 + 1392e3 (G = 1e9, M = 1e6, K = 1e3)

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