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Compound interest calculator
Estimate growth with a fixed annual interest rate.
Results are estimates based on the values you enter. Calculations run in your browser. Monetary results are displayed to two decimal places; loan totals do not account for rounding each payment.
Rule of 72 calculator
Approximate years to double at a constant annual compound growth rate.
72 ÷ r = t; 0 < r ≤ 100