CAGR Calculator

How to use

1. 1Pick a mode at the top: Find CAGR, Find ending value, or Compare investments.
2. 2For Find CAGR, enter the beginning value, the ending value, and the number of years (decimals allowed). Use the preset chips for common scenarios.
3. 3For Find ending value, enter a beginning value, a target CAGR percent, and a time horizon to project the ending value and the year-by-year smooth path.
4. 4For Compare investments, fill in both A and B with their own values and years; the result panel ranks them by annualized return and shows the basis-point gap.
5. 5Pick a currency for the display, then read the result panel for CAGR, total growth, multiple, doubling time, and Rule of 72.
6. 6Click Copy CAGR percent or Copy summary to paste a clean breakdown into a spreadsheet, deal memo, or shareholder note.

About this tool

CAGR Calculator finds the Compound Annual Growth Rate (also called the annualized return or the geometric mean return) of an investment, business metric, or any quantity that changes over time. CAGR is the constant annual rate that, applied uniformly across the time horizon, takes the beginning value to the ending value. It is the single rate that satisfies B times (1 + r) to the n equals E, computed in closed form as (E divided by B) to the power of (1 divided by n), minus 1. Three modes cover every flavor of the question: Find CAGR takes a beginning value, an ending value, and a number of years and returns the rate, the total growth, the multiple, the exact doubling time, and the quick Rule of 72 approximation, plus a year-by-year breakdown that traces the smooth CAGR path so the reader can see how a steady rate would compound. Find ending value reverses the math: pick a beginning value, a target CAGR, and a time horizon, and the tool projects the ending value and the same growth multiple, useful for setting savings goals, modeling revenue plans, or pricing a long-term forecast. Compare investments takes two scenarios with independent beginning values, ending values, and horizons, normalizes them to annualized return, and ranks them with the basis-point gap surfaced explicitly so a 12.4% return over 5 years can be honestly compared to an 11.1% return over 8 years. Fractional years are supported throughout (enter 2.5 for two and a half years), negative growth is handled (declining revenue, drawdowns, real estate corrections), and the currency picker switches between US Dollar, Euro, British Pound, Canadian Dollar, Australian Dollar, Indian Rupee, Japanese Yen, Turkish Lira, or no symbol at all. The page also explains the practical differences between CAGR and simple ROI (no time component), CAGR and IRR (no intermediate cash flows), and CAGR and the Rule of 72 (a mental shortcut that drifts at high rates), so the reader can pick the right metric for the conversation they need to have. Presets cover the most-cited shapes: stock index over a decade, SaaS ARR scale-up, home appreciation over 20 years, the rate that doubles money in 7 years, and a declining business. Every calculation runs locally in your browser using deterministic IEEE 754 arithmetic, so the prices, balances, and revenue numbers you analyze never leave your device.

Free to use. Works in your browser. No signup, no login.