The following formula is involved in the calculation of cash flow to total debt ratios:

Cash flow to total debt:
where CF is a company's cash flow over a specified time period and D_{T} is the company's total debt.

The following references can be used to cite this cash flow to total debt calculator:
 Soper, D.S. (2018) "Cash Flow to Total Debt Calculator (Online Software)", http://www.danielsoper.com/fincalc. 
 Bragg, S. (2012). "Business Ratios and Formulas: A Comprehensive Guide", Hoboken, NJ: John Wiley & Sons. 