Compound Interest Calculator 2026
Discover the power of compounding. Calculate how your savings and investments grow over time with compound interest and regular contributions.
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Investment Details
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Enter investment details to see compound growth.
The Rule of 72
Divide 72 by your interest rate to find how many years it takes to double your money.
72 ÷ 8% = 9.0 years to double
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Compound Interest Formula
A = P(1 + r/n)^(nt) + PMT × [(1+r/n)^(nt) - 1] / (r/n)