CAGR Calculator

CAGR works by answering a deceptively simple question: if your investment grew at a perfectly steady rate each year, what would that rate be? Unlike a simple average of annual returns, CAGR accounts for compounding — the fact that each year's growth builds on the prior year's accumulated value. This makes it a far more accurate representation of true investment performance over multi-year periods. Enter your beginning value, ending value, and the number of years elapsed, and the calculator does the rest.

The key insight behind CAGR is that real-world investments rarely grow at a uniform rate. A portfolio might gain 30% in one year and lose 10% the next, making year-by-year comparisons noisy and misleading. CAGR cuts through that volatility by treating the journey as irrelevant and focusing only on where you started and where you ended up relative to the time elapsed. This is why CAGR is the standard metric used in earnings reports, fund prospectuses, and venture capital pitches when communicating annualized return figures.

Several factors directly affect your CAGR result. The most obvious are the magnitude of growth and the length of the time period — a higher ending value and a shorter time span both push CAGR up. But be aware that the time period you choose can dramatically change the picture: cherry-picking a favorable start or end date (a practice sometimes called 'peak-to-trough' or 'trough-to-peak' selection) can make a mediocre investment look stellar or a strong one look weak. Always use consistent, meaningful start and end dates — such as fiscal year-end figures or the actual purchase and sale dates of an asset.

A common mistake is confusing CAGR with average annual return. If a $10,000 investment falls to $5,000 in year one and recovers to $10,000 in year two, the simple average return is 0% — yet the arithmetic mean of +(-50%) and +(+100%) is 25%, which is wildly misleading. CAGR correctly yields 0%, because the ending value equals the starting value. Another pitfall is applying CAGR to highly irregular or lumpy cash flows (like rental income or dividend reinvestment); for those scenarios, IRR (Internal Rate of Return) is a more appropriate metric. Use CAGR when you have a single lump-sum starting investment and a single ending valuation.