By retire early, do you mean retire like Mr. Money Mustache suggests, -- i.e., extremely low cost of living, don't use AC, don't drive anywhere, probably live on less than 20K a year?

Or are you making a large enough salary in the PNW/San Jose or something where you can put back 1-3 mil in 10 years?

I ran that calculator and while it says I can retire soon, I've always heard 25x income to be a much more reliable number.