Investment Growth Calculator – Free & Client-Side

Model index fund, stock, or ETF portfolio growth over 5 to 40 years with real purchasing power projections adjusted for historical inflation rates.

Mathematical Formula

Real Return = ((1 + Nominal Return) / (1 + Inflation Rate)) - 1.

Frequently Asked Questions

What is a realistic long-term stock market return expectation?
Historically, broad market index funds (like the S&P 500 or MSCI World) have returned an average of 9% to 10% annually before inflation, or approximately 6.5% to 7% after adjusting for historical inflation.

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