See how your savings or investment grows over time — instant, private, no upload.
Everything runs in your browser — nothing is uploaded or stored on any server.
Add your starting amount, interest rate, time period, and any monthly contributions.
Choose how often interest compounds — annually, monthly, daily, or in between.
The right panel updates instantly, showing your final balance and total interest earned.
Save the full breakdown as a .txt file or copy the summary straight to your clipboard.
Built for real financial planning — no subscriptions, no watermarks, no surprises.
No servers to wait on. Everything processes locally the moment you type.
Your data never leaves your device. Nothing is collected or transmitted.
Open the page and start using it. No account, no email, no onboarding.
The file you download is polished and ready to send — no extra formatting needed.
Desktop, tablet, or phone — the tool adapts to any screen with no app to install.
No trials, no paywalls, no hidden tiers. Free to use without limits, always.