3 calculation modes Year-by-year table Investment & business

CAGR Calculator

Compound Annual Growth Rate — the cleanest way to compare investment or business growth across time. Calculate CAGR from two values, project a future value, or find how long to reach a target.

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Calculate CAGR

I know the starting value, ending value, and number of years.

What Is CAGR?

The definition

CAGR (Compound Annual Growth Rate) is the rate at which an investment would have grown each year, at a constant rate, to get from a starting value to an ending value over a given period. It "smooths out" year-to-year volatility into a single representative growth rate.

Formula: CAGR = (End / Start)^(1/Years) − 1

Common uses

  • Investments: Compare stock, ETF, or fund performance over different time periods on a level playing field.
  • Business: Revenue, user, or profit CAGR is a standard metric in business presentations and pitch decks.
  • Goal planning: "If I need $500,000 in 15 years and have $100,000 now, what CAGR do I need?" — Mode 1 answers that.
  • Benchmarking: Compare your portfolio CAGR against the S&P 500 (~10% historical) or other benchmarks.

CAGR vs simple average return

If a $10,000 investment gains 50% in year 1, then loses 33% in year 2, the simple average is (50% − 33%) / 2 = 8.5%. But the actual value is back to $10,000 — a 0% CAGR. CAGR is always more accurate because it reflects what actually happened to your money.

Rule of 72

Divide 72 by the CAGR percentage to estimate how many years it takes to double your money. At 7% CAGR: 72 ÷ 7 ≈ 10.3 years to double. At 10%: 72 ÷ 10 = 7.2 years. It's a fast mental check — use this calculator for the precise answer.

FAQ

What does CAGR stand for?

CAGR stands for Compound Annual Growth Rate. It measures the mean annual growth rate of an investment or metric over a specified time period, assuming the growth is compounded annually.

Can CAGR be negative?

Yes. If an investment lost value over the period, the CAGR will be negative. For example, if $10,000 fell to $7,000 over 5 years, the CAGR is (7000/10000)^(1/5) − 1 ≈ −6.9% per year.

What is a realistic CAGR for the stock market?

The S&P 500 has delivered approximately 10% CAGR over the long run (before inflation), or about 7% after inflation. Individual stocks, sectors, or international markets can vary significantly — use CAGR to compare across different investments on equal footing.

Is CAGR the same as annualized return?

Yes — they're the same concept. "Annualized return" and CAGR both refer to the geometric mean annual growth rate. Some contexts use "annualized return" for investment performance and "CAGR" for business metrics, but the calculation is identical.