Compound Interest Calculator
Calculate compound interest on savings and investments. See how your money grows over time.
What is Compound Interest?
Compound interest is interest earned on both the principal and previously earned interest. This creates exponential growth over time and is often called "interest on interest."
A = P(1 + r/n)^(nt)
Where A = Final Amount, P = Principal, r = Rate, n = Compounding frequency, t = Time
How to Use This Calculator
- Enter the principal amount
- Enter the annual interest rate
- Enter the time period in years
- Select how often interest compounds
- Click "Calculate" to see your results
Frequently Asked Questions
Does more frequent compounding give better returns?
Yes, more frequent compounding typically results in slightly higher returns. Daily compounding earns more than monthly, which earns more than annual.
What's continuous compounding?
Continuous compounding is the theoretical maximum where interest compounds infinitely. It's the limit as compounding frequency approaches infinity.
Frequently Asked Questions
❓ Is this tool free?
Yes! All our tools are completely free. No registration, no hidden charges, no ads. Just open and use.
🔒 Is my data safe?
Absolutely. All calculations happen in your browser. We don't store, send, or track any of your data. Everything is processed locally on your device.
📱 Can I use this on mobile?
Yes! All our tools are fully responsive and work perfectly on smartphones, tablets, and desktops.
🌐 Do I need internet?
No! Once the page loads, you can use the tool completely offline. All calculations happen in your browser without any server connection.