Set up your calculation
Add capital, rate, and time to obtain interest without compounding.
Simple interest calculator
Calculate simple interest, final amount and total interest. Enter principal, rate, time and time unit (days/months/years).
Personal finance
Estimate how much your money grows with simple interest using your principal, the annual rate, and the time horizon. Choose how often you want to review the progress and get a clear breakdown of accrued interest and final amount.
Results
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Fill the form to see the simple interest total.
Accrued interest
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Applied rate
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0 periods
Period breakdown
| Period | Elapsed time | Accrued interest | Total with interest |
|---|
Growth chart
How this simple interest calculator works
Simple interest multiplies the principal by the annual rate and by time in years. There is no compounding, so the interest grows linearly because it is always calculated over the same principal.
The table shows interest accrued at the chosen frequency. It helps you compare short-term deposits, promissory notes, or loans where reinvestment does not take place.
Interpreting your results
- Accrued interest: total interest earned at the end of the selected time.
- Final amount: principal plus simple interest accrued.
- Period table: shows the linear growth of interest over time.
Ensure the rate and duration reflect the real terms of your financial product before making decisions.
Simple interest FAQs
- Changing the time unit converts the duration to years to keep the formula consistent.
- Without compounding, growth is linear and each period adds the same amount of interest.
- Using the same rate and time as a compound scenario will highlight the lower total from simple interest.
