💹Compound Interest Calculator
See how your money grows with compound interest. Enter the principal, annual interest rate, time period and compounding frequency to get the maturity value and total interest earned.
Maturity value
₹1,48,985
Interest
₹48,985
Invested
₹1,00,000
How it works
- A = P × (1 + r/n)^(n·t), where P is principal, r is annual rate, n is compounds per year and t is years.
- Total interest = A − P.
- More frequent compounding (monthly vs yearly) yields slightly higher returns.
Frequently asked questions
What is compound interest?
Interest calculated on both the original principal and the accumulated interest — so your money grows faster than with simple interest.
How does compounding frequency matter?
The more often interest is compounded (e.g. monthly vs annually), the more you earn, because interest starts earning interest sooner.