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Estimate student-loan payments, total interest, and repayment cost from balance, rate, and term.
Use this student loan calculator to see how repayment term and rate change the monthly burden of an education loan balance. The calculator is designed to give a fast answer, but the quality of the answer still depends on accurate inputs and a clear idea of what decision you are trying to support.
- Enter Student Loan Balance, Annual Interest Rate, and Loan Term using the same units you plan to compare or report.
- Read the main monthly payment first, then use the supporting outputs to understand the trade-offs behind that result.
- Compare your numbers with the worked examples below if you want a quick reasonableness check.
Monthly payment tells you the cash flow commitment, while total payment and total interest show how expensive the borrowing becomes over the full term. On this page, the primary output is monthly payment.
Scenario 1: $27,000 student loan at 5.4% over 120 months. Inputs used: principal: 27000, rate: 5.4, term: 120. Example result: $291.68. This ten-year student-loan schedule produces an estimated monthly payment of $291.68. Scenario 2: $54,000 student loan at 6.8% over 180 months. Inputs used: principal: 54000, rate: 6.8, term: 180. Example result: $479.35. A longer repayment horizon lowers the monthly payment estimate to $479.35, but increases total interest.
Core formula: M = P * [r(1+r)^n] / [(1+r)^n - 1]. This is the standard amortization formula for fixed-payment loans. It spreads principal and interest across the full repayment term.
- When the rate is zero, the payment falls back to principal divided by term.
- Total interest equals total payments minus the amount borrowed.
Use this calculator when comparing lenders, checking affordability, or deciding between shorter and longer repayment periods. Related paths for follow-up analysis include personal loan calculator, loan payment calculator, annual salary calculator, and monthly salary calculator.
Most bad outputs come from a few repeated input errors or interpretation mistakes. Use this short checklist before relying on the result.
- Comparing monthly payments without checking total interest paid.
- Using years when the calculator expects months for the term input.
- Ignoring fees that are outside the amortization formula.
