Investment Calculator
GoCalc
Calculate compound interest with monthly contributions. See your investment grow over time with a detailed year-by-year breakdown and growth chart.Updated 2026-03-16
Future Value
$0
Total Contributions
$0
Total Interest
$0
📈 Growth Chart
Year-by-Year Breakdown
| Year | Contributions | Interest Earned | Total Balance |
|---|
How Compound Interest Works
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This creates a snowball effect where your money grows exponentially over time.
Formula: FV = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)]
Where: P = initial investment, PMT = monthly contribution, r = annual rate, n = compounds per year, t = years
💡 All calculations happen locally in your browser — no data is sent anywhere.