Tool4SaaS

Loan Calculator

Estimate monthly loan payments, total interest, and payoff timeline from principal, rate, and term with amortization breakdowns in your browser offline.

Monthly payment

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Total paid

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Total interest

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About the author

Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .

Frequently asked questions

Monthly payment, total paid and total interest for a fixed-rate loan.

Yes. A 0% rate divides the principal across the term.

Yes, all calculations run locally in your browser; nothing is uploaded and your inputs stay private.

How to use Loan Calculator

  1. Enter loan details: Add amount, annual rate and term in years.
  2. Read results: See monthly payment and totals.
  3. Adjust inputs: Change rate or term to compare scenarios.