Firefox System Requirements
Firefox ESR 115.21.1
Windows
Operating Systems (32-bit and 64-bit)
- Windows 7
- Windows 8 or 8.1
Recommended Hardware
- Pentium 4 or newer processor that supports SSE2
- 512MB of RAM / 2GB of RAM for the 64-bit version
- 200MB of hard drive space
Mac
Operating Systems
- macOS 10.12
- macOS 10.13
- macOS 10.14
Recommended Hardware
- Mac computer with an Intel x86 or Apple silicon processor
- 512 MB of RAM
- 200 MB hard drive space