Simple Interest Calculator
Enter principal amount, annual interest rate, and time in years to calculate simple interest earned.
Educational purposes only. Not professional advice.
Examples
- $1,000 at 5% for 3 years ⇒ $150 interest
- $2,500 at 4% for 2 years ⇒ $200 interest
FAQ
Is compounding included?
No. Use a compound interest calculator for compounding.
How is the interest calculated?
Interest equals principal multiplied by rate and time in years.
Can I use months instead of years?
Convert months to years by dividing by 12.
Does the result include the principal?
No, it returns only the interest earned.
Additional Information
- Uses the basic simple-interest formula where interest grows linearly and any earned interest isn't reinvested.
- Best suited for quick projections on short-term loans or investments that don't compound.