Simple Interest Calculator
Calculate simple interest on a deposit or loan, where interest is earned only on the original amount. Enter the principal, annual rate and years to…
8 of 8 free uses remaining today
Calculate simple interest on a deposit or loan, where interest is earned only on the original amount. Enter the principal, annual rate and years to see interest and total.
General information only, not financial advice. Results are estimates; fees, tax and future rate changes may affect outcomes.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (principal = 10,000, annual rate = %5, years = 3), the results are: interest 1,500.00; total 11,500.00.
Quick reference: principal vs result
Reference table based on the example values; it is not your calculation result.
| Principal | Interest | Total |
|---|---|---|
| 5,000 | 750.00 | 5,750.00 |
| 10,000 | 1,500.00 | 11,500.00 |
| 20,000 | 3,000.00 | 23,000.00 |
| 50,000 | 7,500.00 | 57,500.00 |
| 100,000 | 15,000.00 | 115,000.00 |
| 200,000 | 30,000.00 | 230,000.00 |
Frequently asked questions
What formula does this calculator use?
Interest = p × r × t ÷ 100; Total = p+p × r × t ÷ 100. Variables: p = principal, r = annual rate in %, t = years.
What do I need to enter?
You need principal, annual rate (%), years. Results update as you type.
What is an example result?
With the default inputs (principal = 10,000, annual rate = %5, years = 3), the results are: interest 1,500.00; total 11,500.00.
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