Compound interest calculator
Watch interest earn interest. Pick how often it is added and see the year-by-year growth.
Total after the period
₹1,33,100.00
About ₹1.33 lakh
- Amount you started with
- ₹1,00,000.00
- Interest earned
- ₹33,100.00
Money you put in 75%Interest 25%
Started withInterest
Years on the bottom; tap or hover the chart to read a year.
What if?
- Keep it one more year → ₹13,310 more
- At 1% more interest → ₹3,663 more
- Add ₹10,000 to the amount → ₹13,310 more
Worked out as principal × (1 + rate ÷ times a year) ^ (times a year × years). The more often interest is added, the more you earn, because interest starts earning interest sooner.
Compound interest on ₹1,00,000.00 at 10% a year for 3 years, yearly compounding: interest ₹33,100.00, total ₹1,33,100.00. kaamsolv.com/compound-interest-calculator
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How it works
- 1
Enter the amount and the rate
What you start with and the yearly interest rate.
- 2
Set the time and how often interest is added
Years and months, and daily, monthly, quarterly, half-yearly or yearly compounding.
- 3
Read the total
The interest earned, the total amount, and the balance at the end of each year.
Questions
What is the compound interest formula?
Total = principal × (1 + rate ÷ n) ^ (n × years), where n is how many times a year interest is added. The interest is the total minus the principal. For ₹1,00,000 at 10% for 3 years, added yearly: ₹1,00,000 × 1.1 × 1.1 × 1.1 = ₹1,33,100, so ₹33,100 of interest.
Does more frequent compounding earn more?
Yes, a little, because interest starts earning interest sooner. ₹1,00,000 at 8% for 10 years becomes ₹2,15,892.50 with yearly compounding and ₹2,21,964.02 with monthly compounding.
What is the rule of 72?
A quick estimate of how long money takes to double: divide 72 by the yearly rate. At 8%, that is about 9 years. It is only an approximation; the calculator gives the exact figure.
How is it different from simple interest?
Simple interest is worked out only on the original amount. Compound interest is worked out on the growing balance, so over long periods it pulls well ahead. The simple interest calculator shows the other side.
Which frequency should I pick?
Use whatever your deposit or loan states. Bank FDs usually add interest quarterly, savings accounts often work monthly or quarterly, and yearly is the simplest to check by hand.
Does it include tax or inflation?
No. It shows the growth of the amount before tax and before the rising cost of living. Interest is generally taxable, so ask a tax adviser about your own case.
Is my information sent anywhere?
No. It is worked out in your browser and nothing is sent or saved. A share link only contains the numbers you typed.