Compound Interest Calculator

Compound Interest Calculator

Calculate investment growth, maturity amount, monthly contribution return and compound earnings instantly

Compound Growth Result

Total Invested Amount₹0
Maturity Amount₹0
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Total Interest Earned₹0
Effective Annual Yield0%
Wealth Growth Insight--
Live compound investment computation with contribution growth and frequency based reinvestment effect.

OTHER IMPORTANT CALCULATORS

Compound Interest Calculator

What Is a Compound Interest Calculator?

A compound interest calculator is a free online tool that projects how any sum of money grows over time when interest is earned on both the principal amount and accumulated interest — the financial phenomenon famously described as “interest on interest.” Enter four inputs and get your complete savings or investment projection in seconds.

Compound Interest Formula Explained

Every compound interest calculation uses this standard formula:

A = P × (1 + r/n)^(n×t)

Where:

  • A = Final amount (future value)
  • P = Principal (initial investment or deposit)
  • r = Annual interest rate (decimal)
  • n = Compounding frequency per year
  • t = Time in years

Quick example: ₹1,00,000 invested at 8% annual interest, compounded monthly for 10 years: A = 1,00,000 × (1 + 0.08/12)^(12×10) = ₹2,21,964 — more than double your money.

Compounding Frequency Comparison — Same Rate, Different Results

Frequency₹1,00,000 at 8% for 10 Years
Annually₹2,15,892
Quarterly₹2,20,804
Monthly₹2,21,964
Daily₹2,22,535

More frequent compounding = faster growth. This is why daily compounding in savings accounts and FDs always outperforms annual compounding at the same stated rate.

Why Use Click2Calculate’s Compound Interest Calculator?

  • All compounding frequencies — daily, weekly, monthly, quarterly & annual
  • Regular contributions — add monthly or annual deposits to model SIPs and savings plans
  • Simple vs compound interest comparison — see exactly how much more compounding earns
  • Rule of 72 shortcut — estimate how many years to double your money at any rate
  • Works for savings, FDs, loans & investments — one tool, every use case

Whether you are planning retirement savings, comparing FD returns, projecting SIP growth, or calculating loan interest, this free compound interest calculator online shows you the power of compounding — instantly and accurately.