Compound Interest Calculator
Visualize how your money grows exponentially when interest compounds over days, months, quarters, or years.
Compound Growth Metrics
Review the compounding analysis on your principal capital:
Initial Capital
The base amount invested before compound interest begins.
Compound Interest
The exponential returns earned over the duration.
Accumulated Wealth
The final maturity corpus representing principal plus all compounded interest.
How is it calculated?
A = P \left(1 + \frac{r}{n}\right)^{nt}Where A is the final amount, P is the principal, r is the annual rate, n is compounding frequency, and t is the time in years.
Worked Examples
₹50,000 Compounded Monthly for 3 Years
At a 10% annual rate compounded monthly for 3 years, ₹50,000 grows to a final balance of ₹67,409. Total compound interest earned is ₹17,409.
Daily Compounding Impact
Investing ₹1 Lakh for 5 years at 8% compounded daily yields ₹149,176, which is higher than annual compounding which yields ₹146,932.
The Power of Compound Interest & Frequency Guide
What is Compound Interest?
Compound interest is the interest calculated on the initial principal, which also includes all the accumulated interest from previous periods. Einstein famously called compound interest the "eighth wonder of the world," noting that "he who understands it, earns it... he who doesn't, pays it."
Compounding creates a snowball effect where your savings grow exponentially over time as your interest begins earning its own interest.
The Compound Interest Formula and Frequencies
The mathematical formula to calculate compound interest is:
A = P * (1 + r / n)^(n * t)
Where A is the final maturity amount, P is the principal, r is the annual rate (as a decimal), n is the compounding frequency per year, and t is the time in years.
As compounding frequency increases (e.g., daily compounding instead of annual), your wealth grows faster because interest is added back to the principal sooner. This tool lets you compare daily, monthly, quarterly, and annual compounding frequencies.
Frequently Asked Questions
What is the Rule of 72?
How does compounding frequency impact returns?
Results are estimates and should not be considered financial advice.