The FAFSA formula changes a bit from year to year, and it freely available on the web. Google EFC formula 2019 and you will get a link to the PDF for academic year 2018-2019. You can print out the PDF and work through it on paper to see what federal aid you would qualify for https://ifap.ed.gov/efcformulaguide/attachments/071017EFCFormulaGuide1819.pdf