Check macOS free disk space using Terminal command

In order to know the available free disk space on your Mac device (Macbook, iMac, or Mac Mini) running macOS you can make use of the Terminal command df -h command,

% df -h
Filesystem       Size   Used  Avail Capacity iused      ifree %iused  Mounted on
/dev/disk3s3s1  228Gi   14Gi  115Gi    11%  501138 1208959160    0%   /
devfs           200Ki  200Ki    0Bi   100%     692          0  100%   /dev
/dev/disk3s6    228Gi   20Ki  115Gi     1%       0 1208959160    0%   /System/Volumes/VM
/dev/disk3s4    228Gi  475Mi  115Gi     1%    1941 1208959160    0%   /System/Volumes/Preboot
/dev/disk3s2    228Gi   64Mi  115Gi     1%      49 1208959160    0%   /System/Volumes/Update
/dev/disk1s2    500Mi  6.0Mi  482Mi     2%       7    4930560    0%   /System/Volumes/xarts
/dev/disk1s1    500Mi  7.3Mi  482Mi     2%      33    4930560    0%   /System/Volumes/iSCPreboot
/dev/disk1s3    500Mi  412Ki  482Mi     1%      38    4930560    0%   /System/Volumes/Hardware
/dev/disk3s1    228Gi   97Gi  115Gi    46% 1142503 1208959160    0%   /System/Volumes/Data
map auto_home     0Bi    0Bi    0Bi   100%       0          0  100%   /System/Volumes/Data/home

-h gives you results in human-readable format Gi/Mi

As you can see my disk on the Mac disk3s1 is taking up 46% space i.e. 97 GB utilized of 228 GB, so I have 131 GB of free space.