Rule of 72 Calculator
Calculate how long it will take for your investment to double using the Rule of 72. Understand how interest rates and compounding affect your wealth growth.
Step 1: Investment Details
Understanding the Rule of 72
The Rule of 72 estimates how long it takes for an investment to double at a fixed annual interest rate. Divide 72 by the interest rate to get the doubling time.
Step 2: Advanced Options
About Compound Interest
Compound interest is interest calculated on the initial principal and also on the accumulated interest from previous periods. It causes wealth to grow exponentially over time.
Rule of 72 Results
Time to Double Your Investment
Interest Rate Comparison
| Interest Rate | Years to Double (Rule of 72) | Future Value (20 years) | Total Interest | Doubling Cycles |
|---|
Investment Growth Analysis
Rule of 72 Formula
Years to Double = 72 ÷ Interest Rate
The Rule of 72 provides a quick approximation of how long it takes for an investment to double at a fixed annual interest rate. For more precise calculations, use the compound interest formula.
Need Financial Advice?
Connect with our financial experts for personalized investment strategies, retirement planning, and wealth management guidance for your financial goals.
Get Financial Advice