FSPS Retirement Question: Calculation

Hello! I did a little research in this sub, but haven't been able to locate an answer. I am trying to figure out what my FSPS Retirement amount might look like. I am a few years away from retirement and have a sense of what my high income will be, but I'd like to know if there's a way to see what I currently have set aside (other than manually adding up my earnings and leave statements for my career). I've seen some calculators for other retirement programs - is there one for FSPS? Thank you!