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Calculators4 min readFebruary 17, 2026

Loan Calculator: Calculate Monthly Payments and Total Interest

Calculate loan payments, total interest, and amortization schedules. Compare different loan terms to find the best option for you.

Whether you're considering a personal loan, car loan, or student loan, understanding your monthly payments before borrowing is crucial for financial planning.

How Loan Payments Are Calculated

Monthly payment = P[r(1+r)^n]/[(1+r)^n-1], where P = principal, r = monthly interest rate, n = number of payments.

Factors That Affect Your Payment

Loan amount: Higher principal means higher payments. Interest rate: Even small rate differences add up significantly over time. Loan term: Longer terms mean lower monthly payments but more total interest.

Example Comparison

For a $20,000 loan at 6% interest: 3-year term: $608/month, $1,898 total interest. 5-year term: $387/month, $3,200 total interest. The longer term saves $221/month but costs $1,302 more in interest.

Use Our Free Loan Calculator

Enter loan amount, interest rate, and term length. See monthly payment, total interest, total cost, and a full amortization schedule. Compare different scenarios side by side.

Try Loan Calculator Now

Use our free Loan Calculator tool — no signup required, works on any device.

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