Inflation of 54% I can retire in ~10 years.. inflation of 55%, I never can.
I will have to put in some more test conditions to show errors. I think it is because whenever the inflation exceeds the amount of money you are adding to your 'stache each year, you will never reach retirement.
EDIT: Well, there is obviously something wrong with the math now that I am working with it some more. I will work on this as soon as I get home. Thank you for your help everyone!
EDIT2: I am going through the six calculators right now to double check my numbers:
1. Time to FI -- there is something wrong here, I apologize.
2. Power of Decreased Spending -- This is correct
3. Vehicle Cost per Mile -- This is correct (double checked on a spreadsheet). Cost per mile includes cost of gas, depreciation of vehicle and averaged cost of maintenance and insurance.
4. Savings from Not Spending -- This is correct, it matches up with my financial calculator.
5. Real Hourly Wage.
The math here is:
(total salary - commuting costs - added food costs - other costs) / total hours worked
where total hours worked = (daily hours worked + commute time) * weeks per year * days per week
The numbers I am getting are consistent with my spreadsheet but off by a couple cents due to rounding errors. I need to reduce the number of divides I am doing to get a better number. Will update later, but this is basically correct (based on my assumptions).
6. Compound Interest -- This is correct, it matches up with my financial calculator.
Once again, thank you everyone for your help in testing.