Compound Interest Calculator

💰 Compound Interest Calculator

Initial Investment ($)

Annual Interest Rate (%)

Time Period

Compound Frequency

Regular Contributions ($)

Contribution Frequency

Contribution Timing

Beginning of period

End of period

Notes:

Compound interest is calculated using the formula: A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)] × (1 + r/n × type)
Where: A = final amount, P = principal, r = annual interest rate, n = number of times interest is compounded per year, t = time in years, PMT = regular contribution, type = 1 for beginning of period, 0 for end
Results do not account for taxes or fees