compound interest

Watch your money grow.

Compound interest with regular contributions. See the final balance, total interest earned, and growth year by year.

final balance
$300,850.72
total contributed
$130,000
interest earned
$170,851
year-by-year
year
balance
contributed
interest
1
$16,919
$16,000
$919
2
$24,339
$22,000
$2,339
3
$32,294
$28,000
$4,294
4
$40,825
$34,000
$6,825
5
$49,973
$40,000
$9,973
6
$59,782
$46,000
$13,782
7
$70,299
$52,000
$18,299
8
$81,578
$58,000
$23,578
9
$93,671
$64,000
$29,671
10
$106,639
$70,000
$36,639
11
$120,544
$76,000
$44,544
12
$135,455
$82,000
$53,455
13
$151,443
$88,000
$63,443
14
$168,587
$94,000
$74,587
15
$186,971
$100,000
$86,971
16
$206,683
$106,000
$100,683
17
$227,820
$112,000
$115,820
18
$250,486
$118,000
$132,486
19
$274,790
$124,000
$150,790
20
$300,851
$130,000
$170,851
AIExplain compounding
Is this tool free?
Yes. The compound interest calculator is completely free. Model as many scenarios as you want.
Do I need to sign up?
No. Enter a principal, rate, and time period to see the result. No account required.
Is my data private?
All calculations run in your browser. No financial data is sent to any server.
Does it support regular contributions?
Yes. You can add recurring contributions at monthly, quarterly, or yearly intervals. The tool shows a year-by-year breakdown with columns for total balance, amount contributed, and interest earned.