Compound Interest Calculator
See how your money grows over time with compound interest and regular contributions.
$
$
%
yrs
Future Value
$300,851
Total Contributions
$130,000
Total Interest Earned
$170,851
Growth Over Time
Yr 1
$16,919
Yr 3
$32,294
Yr 5
$49,973
Yr 7
$70,299
Yr 9
$93,671
Yr 11
$120,544
Yr 13
$151,443
Yr 15
$186,971
Yr 17
$227,820
Yr 19
$274,790
Yr 20
$300,851
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.