Free Online Compound Interest Calculator

Calculate compound interest and investment growth with our free online Compound Interest Calculator. Fast, private, and no signup required.

Compound Interest Calculator

See how your investments grow over time with compound interest.

Principal Amount ($)

Annual Interest Rate (%)

Number of Years

Compounding Frequency

Monthly Contribution ($)

Final Amount

$20,096.61

Total Contributions

$10,000.00

Total Interest Earned

$10,096.61

Year	Balance	Contributions	Interest Earned
1	$10,722.90	$10,000.00	$722.90
2	$11,498.06	$10,000.00	$1,498.06
3	$12,329.26	$10,000.00	$2,329.26
4	$13,220.54	$10,000.00	$3,220.54
5	$14,176.25	$10,000.00	$4,176.25
6	$15,201.06	$10,000.00	$5,201.06
7	$16,299.94	$10,000.00	$6,299.94
8	$17,478.26	$10,000.00	$7,478.26
9	$18,741.77	$10,000.00	$8,741.77
10	$20,096.61	$10,000.00	$10,096.61

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How does the Compound Interest Calculator work?

Enter your data and the Compound Interest Calculator processes it instantly in your browser.

Is this tool free?

Yes. This tool is completely free to use with no signup required.

Is my data safe?

Yes. All processing happens in your browser. Your data is never sent to any server.