Compound Interest Calculator
Compound interest on a principal with yearly to daily compounding and optional monthly contributions.
About Compound Interest Calculator
Compound interest is interest on interest: each period's interest is added to the principal and earns interest itself. This free compound interest calculator shows how much a sum grows to in India's rupee terms.
Enter the principal, the annual interest rate and the time in years, and choose how often interest is compounded: yearly, half-yearly, quarterly, monthly or daily. You can also add a regular monthly contribution to see how savings build up. The result shows the final amount, total interest and effective annual rate, calculated in your browser. It is useful for deposits, loans and chakravriddhi byaj homework problems.
How to use Compound Interest Calculator
- Enter the principal, annual rate and time in years.
- Choose how often interest is compounded.
- Optionally add a monthly contribution and read the final amount.
Frequently asked questions
What is the compound interest formula?
A = P × (1 + r/n)n×t, where r is the annual rate, n the compounding periods per year and t the years. Compound interest = A − P.
How are monthly contributions handled?
Each contribution is added at the end of the month and grows at the monthly equivalent of your chosen compounding: (1 + r/n)n/12 − 1.
What is the effective annual rate?
The yearly return after compounding: (1 + r/n)n − 1. For example, 8% compounded quarterly is 8.24% a year.
What is compound interest in Hindi?
It is called chakravriddhi byaj (चक्रवृद्धि ब्याज) — interest calculated on the principal plus the interest already earned.
How much is ₹1 lakh at 8% compound interest for 5 years?
With quarterly compounding it becomes about ₹1,48,595, so the compound interest is ₹48,595.
What is the difference between simple and compound interest?
Simple interest is charged only on the original principal; compound interest is charged on the principal plus accumulated interest, so it grows faster.
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