📈 Interest Calculator
Calculate compound interest, investment growth, and see how your money grows over time
Ending Balance
$60,420
Total Principal
$25,000
Total Contributions
$50,000
Total Interest
$10,420
Interest from Initial Investment
$7,084
Interest from Contributions
$3,336
Breakdown
Quick examples
- $10,000 initial, 5% annually, 10 years → no contributions
- $5,000 initial, $200 monthly contribution, 7% with monthly compounding, contribute at beginning, 10 years
- $25,000 initial, $5,000 annual contribution, 6% for 20 years; include tax 25% and inflation 2%
- $0 initial, $500 monthly contribution, 8% for 15 years → growth driven by contributions
Tip: Use the contribution switches and frequency selector to match each scenario, then compare ending balance and interest earned.
Frequently Asked Questions
What is this calculator used for?
This calculator helps you perform specific calculations quickly and accurately. Each calculator is designed with a user-friendly interface to solve particular types of mathematical, financial, or health-related problems.
Is my data stored or tracked?
No, all calculations are performed locally in your browser. We prioritize your privacy and don't store or track any of your personal data. Your information never leaves your device.
How accurate are the results?
Our calculators use industry-standard formulas and algorithms to ensure high accuracy. However, for critical financial, medical, or legal decisions, we recommend consulting with a qualified professional.
Can I use this calculator offline?
Yes! CalcBuddy is a Progressive Web App (PWA) that works offline. After your first visit, you can use all calculators even without an internet connection.
Is this calculator free to use?
Absolutely! All calculators on CalcBuddy are completely free to use with no hidden fees, subscriptions, or advertisements. We believe in providing valuable tools to everyone.
How do I report an issue or suggest improvements?
We appreciate user feedback! You can contact us through our support channels to report bugs, suggest new features, or request additional calculators.
Free online interest calculator. All calculations happen locally in your browser for privacy.