To keep it simple the calculation is done in KBs. So 1 block = 1 KB.
As I can see that you have set a soft limit of 10693328 which is equal to 10693.328 MB.
Soft link is basically the limit that act as an alarm if you have setup grace period. If you have not setup a grace period then this limit becomes the maximum limit.
Hard link is basically the limit that a user can reach during the grace period time. If you use grace period then this limit becomes the maximum limit a user can reach.
For example you have setup the following:
Soft limit: 2000000 = 2 GB
Hard limit: 3000000 = 3 GB
Grace period: 5 days
Then, user will be notified if he reaches his quota of 2 GB and then he will get 5 days grace period to do some housekeeping and come under that limit. During this grace period max he can go is 3 GB, not more than that.
You can check the grace period by typing the following command: