I like the simple FIRE calculator at
https://networthify.com/calculator/earlyretirement that tells me when I can reach FI. However, I need to factor in the fact that my spouse plans to work much longer than I do. The calculator links that I just provided calculates FI date only based on current investments, annual savings rate and expenses.
Please suggest a good calculator that can tell me the FI date for one spouse while the other spouse still is in the workforce.
Thank you.