page size
How many bytes one page holds: 4 KiB on x86-64 Linux and Windows, 16 KiB on Apple's ARM64 Macs.
The base page size is set by the architecture and the kernel's configuration (x86-64: 4 KiB; ARM64: 4, 16 or 64 KiB granules; RISC-V Sv39/Sv48: 4 KiB); it fixes the number of page-offset bits. Programs should query it (sysconf(_SC_PAGESIZE), GetSystemInfo) rather than assume it.
Examples
4 KiB on x86-64 Linux and Windows; 16 KiB on macOS on Apple silicon.
See also