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Compound Investment Calculator

Compound interest is interest calculated on the initial principal, which also includes all of the accumulated interest from previous periods on a deposit.

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Estimated Projection

The Mathematics Behind It

Compound Mathematics Formula

A = P(1 + r/n)^(nt) + PMT × (((1 + r/n)^(nt) - 1) / (r/n))

  • A = the future value of the investment
  • P = the principal investment amount
  • PMT = the payment addition made each period
  • r = the annual interest rate (decimal)
  • n = the number of times that interest is compounded per unit t
  • t = the time the money is invested for in years

Frequently Asked Questions

Is the Compound Investment Calculator completely free to use?

Yes, our Compound Investment Calculator is 100% free with no usage limits, hidden paywalls, or registrations required.

How accurate are the results provided by the Compound Investment Calculator?

The calculations are mathematically exact. Our engine utilizes native Javascript precision to deliver instant, exact results based directly on your provided inputs.

Is my inputted data saved or tracked?

Never. All processing happens entirely within your device's local browser memory. No sensitive information is ever transmitted to or stored on our backend servers.

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