Investment Calculator

Free investment calculator. Project your investment growth with regular contributions and compound interest.

How the Investment Calculator works

The calculator projects future value in two parts: the initial lump sum grows via compound interest, and each recurring contribution grows via the future value of an annuity formula. The two are summed for the total projected balance at the end of the period.

Formula

FV = P(1+r)^t + PMT × [((1+r)^t − 1) / r]

How to use the Investment Calculator

  1. 1The investment calculator is designed to be simple and fast.
  2. 2Enter your initial investment.
  3. 3Add monthly contributions.
  4. 4Set the annual return rate and years.
  5. 5See your projected balance.
  6. 6Your result is shown immediately.

Examples

  • $10K initial + $500/mo at 7% for 20 years = $271K
  • $5K initial + $200/mo at 6% for 10 years = $38K

Benefits

  • Completely free with no signup required.
  • Runs entirely in your browser for instant results and privacy.
  • Works on mobile, tablet and desktop.
  • Results can be copied with one click.

Frequently Asked Questions

Is the investment calculator free to use?

Yes. The investment calculator is 100% free, with no signup, no watermark and no hidden limits.

Does the investment calculator store my data?

No. All calculations and processing happen locally in your browser. Nothing is uploaded to a server.

Does the investment calculator work on mobile?

Yes. The investment calculator is fully responsive and works on phones, tablets and desktop computers.

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