Compound Interest Calculator
Lump sum growth with compounding
Final Amount
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📐 Compound Interest
A = P × (1 + r/n)^(n×t)
P = Principal
r = Annual Rate
n = Compounds/Year
t = Years
📊 Rule of 72
| At 6% | Doubles in 12 years |
| At 8% | Doubles in 9 years |
| At 12% | Doubles in 6 years |