Compound interest calculator
Start with what you’ve got, a yearly rate, how often it compounds, and a deposit you add each time. You’ll see the future balance, what you put in yourself, and what the interest added.
Switches the symbol. The number you typed stays put.
$
%
$
Result
Future value
$31,998.32
You put in
$22,000.00
Growth
$9,998.32
Here’s one
$10,000 at 5%, monthly, for 10 years, plus $100 a month
Leave $10,000 at 5%, compounding monthly, and add $100 a month for 10 years. You end up around $31,998. You put in $22,000 of that. The rest is growth.
How it works
Each month (or quarter, or day) the balance earns a slice of the yearly rate, then we add that period’s deposit. Next time, the interest is on the bigger balance.
Good for
A savings pot where the rate and the deposit stay roughly the same. Real accounts wiggle.
If you’re wondering
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Just the math
Handy for a quick number. It isn’t tax, money, or medical advice.