Investment
Compound Interest Calculator
Computes how a principal amount grows under compound interest, with an optional recurring monthly addition.
Your details
₹
₹
%
yrs
Final amount
₹2,59,374
Total invested
₹1,00,000
Interest earned
₹1,59,374
Your money grows to ₹2,59,374 over 10 years — ₹1,59,374 of that is compound interest.
Total₹2,59,374
- Invested₹1,00,000
- Interest earned₹1,59,374
How this is calculated
Lumpsum portion: A = P × (1 + r/n)^(n×t). Recurring portion (if any) uses the standard SIP future-value formula. The two are summed for the total.
Frequently asked questions
What is compound interest?
Interest calculated on both the original principal and the interest already earned — so growth accelerates over time, unlike simple interest.
How does compounding frequency change the result?
More frequent compounding (monthly > quarterly > annually) produces marginally higher returns for the same nominal rate, since interest starts earning interest sooner.
What's the difference from the FD Calculator?
This tool additionally supports a recurring monthly top-up on top of the initial deposit — an FD is a pure lumpsum product.
What's the difference from the SIP Calculator?
SIP assumes no starting lumpsum, only monthly contributions; this calculator lets you combine both.