Compound Interest Calculator
See how your money grows over time with compound interest and regular contributions.
$
$
%
yrs
Future Value
$302,370
Total Contributions
$130,000
Total Interest Earned
$172,370
Growth Over Time
Yr 1
$16,955
Yr 3
$32,411
Yr 5
$50,182
Yr 7
$70,614
Yr 9
$94,108
Yr 11
$121,122
Yr 13
$152,182
Yr 15
$187,895
Yr 17
$228,958
Yr 19
$276,173
Yr 20
$302,370
Contributions Interest
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Frequently Asked Questions
What is compound interest?▾
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. It's often called 'interest on interest' and is the key mechanism behind long-term wealth building.
How often should interest compound?▾
Most savings accounts compound daily, while many investments compound monthly or quarterly. More frequent compounding results in slightly higher returns, but the difference between daily and monthly is minimal.
What is the Rule of 72?▾
The Rule of 72 is a quick way to estimate how long it takes to double your money. Divide 72 by the annual interest rate. For example, at 8% return, your money doubles in approximately 72/8 = 9 years.