What is Compound Interest Calculator?
Compound Interest Calculator helps you see how principal grows when interest is added back at regular intervals.
The main result is maturity value, with a breakdown of interest earned. The formula, example and assumptions below explain how to interpret it.
How to use Compound Interest Calculator
Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.
- Gather principal (₹), nominal annual interest rate (%), duration (years) and compounding per year. Use values from the same situation or reporting period.
- Replace the example principal with your own value, then complete the other fields. Check the displayed units and each selected option.
- Select Calculate and read maturity value with its result breakdown. Change one input and calculate again to compare a second scenario. Reset restores the original example.
- Enter principal in ₹, at least 0. Decimals are accepted.
- Enter nominal annual interest rate in %, at least 0 and at most 100. Decimals are accepted.
- Enter duration in years, at least 0.01 and at most 100. Decimals are accepted.
- Choose compounding per year from Annually, Half-yearly, Quarterly, Monthly and Daily.
Compound Interest Calculator: a worked example
With the inputs below, the result is ₹1,41,477.82 (maturity value). Follow the example, then replace these illustrative values with your own.
| Input or output | Example value |
|---|---|
| Principal (₹) | ₹1,00,000 |
| Nominal annual interest rate (%) | 7 % |
| Duration (years) | 5 years |
| Compounding per year | Quarterly |
| Maturity value | ₹1,41,477.82 |
| Interest earned | ₹41,477.82 |
Understanding the Compound Interest result
Read maturity value alongside interest earned. These describe different parts of the same calculation.
Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.
- Example Interest earned: ₹41,477.82
Compound Interest Calculator: assumptions and common mistakes
A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.
- Projection using the rate you enter, not a guaranteed return or live product quote. Unless stated otherwise, taxes, fees and inflation are excluded.
- Assumes compounding through the entered fractional term; actual deposit rules may use simple interest for incomplete periods.
- A projected return is an assumption. Check whether fees, tax and inflation are included before comparing products.
For wider guidance, visit SEBI Investor Education. The formula and scope of this specific tool are stated on this page.
