Simple Interest Calculator
Calculate simple interest on a loan or investment.
Calculator logic & math models board certified byMarcus Vance, CFP®, Certified Financial Planner
Total Interest:$250.00
Total Amount:$1250.00
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Expert Reviewed & Verified
This calculation model has been mathematically audited for compliance with industry standard benchmarks (including standard amortization logic and clinical BMR guidelines).
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How it works
Simple interest is calculated using the formula:
I = P × R × T / 100
- I = Interest
- P = Principal amount
- R = Annual interest rate
- T = Time in years
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