PC/Windows

• Processor: 1.6 gigahertz (GHz) or faster, 2 cores
• Operating system: Windows 10, windows 8.1, windows 7 service pack 1, windows server 2016, windows server 2012 R2, windows server 2012 or windows server 2008 R2
• Memory: 2 GB RAM (32 bit); 4 GB RAM (64 bit)
• Hard Disk space: 4 GB of available disk space
• Hard disc: 4 GB of available disk space
• Display: 1280 x 768 screen resolution (32-bit requires hardware acceleration for 4K and higher)
• Graphics: hardware acceleration requires directX 9 or later, with WDDM 2.0 or higher for windows 10 (or WDDM 1.3 or higher for windows 10 Fall creators update).

Mac OSX

• Processor: Intel processor
• Operating system: Office for mac is supported on the three most recent versions of macOS. When a new version of macOS is released, the Office for Mac operating system requirement becomes the then-current three most recent versions: the new version of macOS and the previous versions.
• Memory: 4 GB RAM
• Display: 1280×800 resolution
• Hard Disc: 10 GB of available disk space; HFS+ hard disk format (also known as mac OS extended) or APFS. Updates may require additional storage over time.
• Graphics: No graphics requirements

Android

• Processor: ARM-based or Intel x86 processor
• Operating system: Office for android can be installed on tablets and phones that meet the following criteria: running any of the supported versions of android and have an ARM-based or intel x86 processor. Support for kitKat and lollipop devices will continue till june 2019.
• Memory: 1 GB

iOS

• Operating system: Office is supported on the two most recent versions of iOS. When a new version of iOS is released, office’s operating system requirement becomes the then-current two most recent versions: the new version of iOS and the previous version.