EconoPi

S&P 500 Return Calculator

What a past investment in the S&P 500 or Nasdaq would be worth today

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$10,000 in the S&P 500 in 2000 is now

$75,373
Same money in the Nasdaq$57,028
S&P 500 annualized8.1%/yr
In today's dollars (CPI)$40,315

Growth of $10,000 since 2000

S&P 500 (total return)Nasdaq Composite
$75,373$56,530$37,687$18,843$0
Growth of $10,000 since 2000
20002006201320192025

$1,000 invested in the S&P 500…

in 1980 →$202,527today, dividends reinvested
in 1990 →$40,185today, dividends reinvested
in 2010 →$8,288today, dividends reinvested
in 2020 →$2,323today, dividends reinvested

Based on annual S&P 500 total returns and Nasdaq Composite price-index returns through 2025. Past performance does not guarantee future results. Sources: S&P Dow Jones Indices and Nasdaq historical data.

If you had invested in the S&P 500…

One of the most-searched money questions: what would $1,000 or $10,000 invested in the S&P 500 in some year be worth now? This uses approximate annual total returns (dividends reinvested) since 1971, side by side with the Nasdaq Composite, and deflates the result by CPI so you can see the gain in today's dollars.

How to use this calculator

  1. Choose a start year and lump sum to measure a specific historical holding period through the end of 2025.
  2. Compare nominal wealth with the CPI-adjusted result to separate investment growth from lost purchasing power.
  3. Use several start years, especially before major drawdowns, rather than selecting only a favorable entry point.

How to read the result

The S&P 500 figure assumes dividends were reinvested; the Nasdaq comparison uses the commonly quoted price index. The annualized return summarizes the full holding period and does not describe the path taken to reach the ending value.

What this estimate does not capture

Historical index returns are not live quotes and do not include investor taxes, fund expenses or trading costs. An index cannot be purchased directly, and past performance does not set a future expected return.

Methodology, assumptions & limits

Inputs are applied directly to standard finance formulas with monthly compounding where relevant. Results are estimates in the selected currency; they do not include every tax, fee, benefit, market event or local rule. Try a conservative and an optimistic case before making a decision.

Last reviewed: August 2026. Primary references include the IRS 2026, SSA, BLS CPI, U.S. DOL, CFPB.

Frequently asked questions

What is the average return of the S&P 500?

About 10% a year over the long run before inflation — roughly 7% in real terms. Individual decades vary widely.

What would $1,000 invested in 2000 be worth?

Roughly $6,000 today with dividends reinvested, despite starting right before the dot-com crash. The scenario cards show other start years.

S&P 500 vs Nasdaq — which returned more?

The Nasdaq has outperformed over most recent windows thanks to tech, but with far deeper drawdowns: it fell nearly 80% from its 2000 peak.

Do these numbers include dividends?

The S&P 500 series is total return (dividends reinvested). The Nasdaq Composite series is the price index, which is how it is usually quoted.

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All math runs in your browser and your inputs are never sent to a server. Settings are saved locally and share links encode the state in the URL. For information only — not investment or tax advice.