Interest Calculators
Interest Calculator
See how simple and compound interest affect a balance over time.
Interest Calculator
Adjust the figures to update your estimate.
- Payment
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- Total interest
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- Total repayment
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- Additional estimate
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How this calculator works
Enter realistic numbers for your situation. The calculator updates immediately to give you an estimate you can use for planning and comparing options.
Formula explained
Simple interest = P × r × t. Compound interest = P(1 + r/m)^(mt).
Example calculation
$10,000 at 5% for three years earns $1,500 in simple interest.
Factors that affect your result
- Rate and compounding frequency
- Time horizon
- Additional contributions or withdrawals
Frequently asked questions
Is the Interest Calculator free to use?
Yes. This calculator is free, requires no sign-up, and gives an estimate instantly.
Are the results a loan offer?
No. Results are educational estimates. A lender's rates, fees, underwriting and payment terms may differ.
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