Compound Interest Calculator (vs Simple Interest)
Banks in India usually compound FDs quarterly. Choose the frequency that matches your product.
Fill in the fields — the answer appears as you type.
Think an answer is wrong? Report it with your inputs.
How it's calculated
- A = P × (1 + r ÷ n)^(n × t)
- Simple interest = P × r × t
- r = annual rate ÷ 100, n = compounding periods per year, t = years
Worked example
₹1,00,000 at 7% for 5 years, compounded quarterly → ₹1,41,478.
Load this example into the calculatorAssumptions and limits
- Rate stays constant; no withdrawals or additions.
Common questions
What is the Rule of 72?
Divide 72 by the annual rate to estimate the years to double your money: at 8% it takes about 9 years.