Debt Payoff Calculator
Months to payoff = −log(1 − D×r/P) ÷ log(1+r) where D=total debt, r=monthly rater=0.08/12, months ≈ 48, total interest ≈ $3,400
Free online tool
Debt Payoff Calculator
Enter your total debt, interest rate and monthly payment to create a payoff timeline.
Instant calculation
Debt Payoff Calculator
Enter your total debt, interest rate and monthly payment to create a payoff timeline.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter debt total
Type the total amount of debt you want to pay off.
- 02
Enter rate and payment
Provide the annual interest rate and your planned monthly payment.
- 03
Review timeline
Calculate to see months to become debt-free and total interest.
The formula
How this calculation works
Calculates the number of months and total interest to pay off debt with consistent monthly payments.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Pay off $20,000 at 8% with $500/month?
r=0.08/12, months ≈ 48, total interest ≈ $3,400≈ 48 monthsCommon questions
Questions about this calculation
What is the Debt Payoff Calculator?
The Debt Payoff Calculator helps you plan how quickly you can pay off your total debt with fixed monthly payments. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Calculates the number of months and total interest to pay off debt with consistent monthly payments.
Can you show an example?
Example: Pay off $20,000 at 8% with $500/month? — ≈ 48 months.
Is my data saved when I use the Debt Payoff Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Debt Payoff Calculator free to use?
Yes. The Debt Payoff Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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