Investment Calculator – Growth, Return & Wealth Accumulator

Forecast the future value of your portfolio with regular contributions, compound returns, and time horizon modeling.

Finance & Wealth ✓ Free & Instant

Investment Calculator – Growth, Return & Wealth Accumulator

Forecast the future value of your portfolio with regular contributions, compound returns, and time horizon modeling.

Calculated Results ● Live
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Enter your values on the left and click Calculate to view instant results.

How to Use This Investment Calculator

  1. Enter your starting balance (initial principal).
  2. Enter your recurring monthly or annual contribution.
  3. Set your expected annual interest or market return rate (%).
  4. Select your investment horizon in years.
  5. Click Calculate Investment.

Mathematical Formula & Methodology

FV = P(1 + r)^t + PMT × [((1 + r)^t – 1) ÷ r]

Frequently Asked Questions

Historically, the S&P 500 index has returned approximately 10% per year before inflation over long horizons (7% inflation-adjusted).

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