Compound Interest Calculator
See the power of compound interest. Enter your initial investment, expected annual return, compounding frequency, and monthly contributions to see your investment grow over any time horizon. Compare compounding frequencies (daily, monthly, quarterly, annually).
Compound Interest Calculator
$10,048.31
Future Value
$5,000.00
Total Contributed
$5,048.31
Interest Earned
Formula
A = P(1 + r/n)^(nt)Where A = future value, P = principal, r = annual rate, n = compounds/year, t = years
How to Use Compound Interest Calculator
- 1Enter initial investment
- 2Set annual interest rate
- 3Choose compounding frequency
- 4Add monthly contributions
Your Privacy is Protected
Compound Interest Calculator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
What is the Rule of 72?
Divide 72 by your annual interest rate to estimate years to double. At 7%, money doubles every ~10.3 years.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
compound interestinvestment calculatorinterest calculatorsavings calculatorrule of 72
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