Compound Interest Calculator
Calculate how your investments grow with the power of compound interest. See the magic of compounding in action.
Investment Details
£
£
Investment Growth
£144,572.72
Final amount in 20 years
£86,572.72
Interest earned
£58,000
Total contributed
Initial investment growth:£40,387.388
Contributions growth:£104,185.332
Total return:149.3%
Key Insights
Rule of 72
10.3 years to doubleCompounding
MonthlyAnnual Return
7%Monthly Impact
Contributing £200 monthly adds £48,000 over 20 years
Compound Interest Formula
Future Value = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)]
Where: P = Principal, r = Rate, n = Compounding frequency, t = Time, PMT = Monthly contribution
Understanding the Results
This calculator shows the power of compound interest and regular contributions. The "interest earned" represents the magic of compounding - money making money. Remember, past investment returns don't guarantee future performance. Use this as a planning tool, not a guarantee.
Learn More About Investing
Understand compound interest and start your investing journey.