If you want to know if an installed software or program is 32-bit or 64-bit, then 1 of these 4 tricks will tell you if it is a 32-bit or 64-bit app.

Windows 10 going forward will only offer a 64-bit version. It means you need to have 64-bit hardware to install a 64-bit OS. However, there are many computers still running on Windows 10 32-bit OS ...

If you plan to use macOS beyond Mojave, you need to upgrade any 32-bit apps on your Mac to 64-bit. Hereu2019s how to check for 32-bit apps on your Mac.

Check right now what 32-bits apps you still have, because they won't run at all after you've upgraded to Apple's macOS Catalina in September.