To calculate the amount of time it takes to pay off a loan, determine the loan type and enter all relevant information into a loan calculator. Loan calculators are available through Bankrate and CNN Money, notes each organization's website.
The Bankrate website offers a mortgage payoff calculator. This calculator helps determine how to save interest based on periodic mortgage payments. Enter all pertinent information into the calculator such as years remaining, original mortgage term, original mortgage amount, additional monthly payments and annual interest rate. Decide to view the report amortization table as either monthly or yearly. The results display the scheduled payments and the accelerated payments related to the necessary time frame to pay off the loan. Applicable mortgage rates vary by location and time period. View the definitions section of the website for explanations on all of the technical terminology.
The CNN Money website offers a student loan calculator. Enter the loan amount, monthly payment and interest rate. The results display the payoff period and the total interest associated with the loan. Higher monthly payments shorten the length of the loan and reduce the total interest to pay. Additional calculators related to debt planners are also available. These calculators require the name of the debt, amount owed, interest rate and monthly payment information to calculate the total number of months to pay off the debt.