Student Loan Calculator
Repayment plan and total interest.
Enter your values
Enter the loan balance in $.
Enter the interest rate in %.
Enter the repayment term in years.
Enter the extra monthly payment in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Monthly payment
- $423.79
- Payoff time
- 10 yr 0 mo
- Total interest
- $12,854.64
- Total repaid
- $50,854.64
- Interest saved by extra payments
- $0.00
Quick answer
Standard student loan repayment runs 10 years; extending the term lowers payments but sharply increases total interest.
At a glance
| What it does | Repayment plan and total interest. |
|---|---|
| Category | Finance |
| Inputs needed | Loan balance, Interest rate, Repayment term, Extra monthly payment |
| Main output | Monthly payment |
| Cost | Free — no sign-up, no download |
How to use the Student Loan Calculator
- 1Enter your total student loan balance.
- 2Enter the weighted average interest rate.
- 3Try adding an extra monthly payment.
Inputs explained
- Loan balance($)
- Enter the loan balance in $.
- Interest rate(%)
- Enter the interest rate in %.
- Repayment term(years)
- Enter the repayment term in years.
- Extra monthly payment($)
- Enter the extra monthly payment in $.
Worked example
Using the values the calculator loads with:
Inputs
- Loan balance38000 $
- Interest rate6.1 %
- Repayment term10 years
- Extra monthly payment0 $
Results
- Monthly payment$423.79
- Payoff time10 yr 0 mo
- Total interest$12,854.64
- Total repaid$50,854.64
- Interest saved by extra payments$0.00
Frequently asked questions
Should I pay extra on the highest rate loan?
Yes — target the highest rate first while paying minimums elsewhere.
Do income-driven plans cost more?
Usually yes in total interest, though they can end in forgiveness.
What do I need to enter into the Student Loan Calculator?
Just 4 values: loan balance, interest rate, repayment term, extra monthly payment. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Student Loan Calculator work out the answer?
Standard student loan repayment runs 10 years; extending the term lowers payments but sharply increases total interest. The working is shown step by step so you can verify the result by hand.
Is the Student Loan Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.