Compound Interest Calculator
Forecast investment growth, regular deposit accumulation, and compounding returns over any time horizon.
Milestone Progression
Annual Accruals| Year | Total Deposited | Interest Earned | Ending Balance |
|---|
The Compounding Formula
Calculated using the standard discrete formula A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)], modeling contributions at regular deposit intervals.
Frequency Impact
More frequent compounding (such as weekly or fortnightly) puts earned interest back into the principal pool faster, compounding returns at an accelerated rate over decades.
Private Financial Modeling
Your portfolio size, savings rate, and timeline never leave your machine. Calculations execute entirely client-side without analytical tracking.
Frequently Asked Questions
Is the Compound Interest Calculator free to use?▼
Yes, Compound Interest Calculator on SwiftKit is 100% free with no account creation, subscriptions, or usage caps.
Does Compound Interest Calculator store or transmit my data?▼
No. All calculations, formatting, and operations execute locally inside your browser memory. No data is sent to external servers.
Does Compound Interest Calculator work offline?▼
Yes. Once the page is loaded in your browser, all processing happens client-side without ongoing network calls.