Calcul CAGR Excel

What this does

CAGR smooths a multi-year change into one annual rate — the constant rate that would carry the starting value to the ending value over the period. It strips out the noise of bumpy year-to-year swings so two investments over different horizons can be compared on equal footing. Because it is a geometric mean of growth, it is the honest way to summarise compounding, where a simple average would overstate the return. The same idea underpins a lot of everyday Excel work, so the few minutes spent getting it right here pay back across every sheet you build afterwards. Treat it as a pattern, not a one-off, and it stops being something you look up and starts being something you reach for. Treat “calcul cagr excel” as a small repeatable workflow rather than a one-off click you hope to remember next time. Use a small test block before the live file, so any surprise in the affected cells shows up while it is still harmless. When a formula is involved, keep the inputs labelled beside it, reference cells instead of typing values, and apply number formatting only after the result checks out. That turns a calculation you can defend to a CFO or an auditor into a method you can reuse, explain, and defend when the workbook leaves your screen.

A worked example

Say a fund grew from €10,000 to €19,672 over 10 years. Enter =(19672/10000)^(1/10)-1 and format as a percentage: the result is 7.0%. That single figure means the fund effectively earned 7% every year, compounded — even though the real path was lumpier. Change the ending value to €25,000 and the rate jumps to 9.6%, which is exactly what the live chart above redraws as you type. Reach for CAGR whenever you need to compare growth over different time spans or report a single, defensible annual figure to a board or client. It is the standard language of investment and revenue reporting precisely because it is comparable and hard to game. If there is any chance you will reuse this, drop it into a small template tab right now: a labelled input area on the left and the formula beside it, checked once against the tool above. Next time the same question comes up, the answer is a single paste away instead of a rebuild from memory.

In Google Sheets

Google Sheets handles this almost identically to Excel. The formula syntax above is the same, and the menu lives under a slightly different label rather than a ribbon tab. Use the platform toggle at the top of the page to switch every keyboard shortcut between Windows and Mac, and expect at most cosmetic differences in naming. Keep this page bookmarked for the next time the same question comes up. Better still, rebuild the example once in your own sheet — doing it yourself, with the tool above to check against, is what turns a copied formula into a technique you own. Treat “calcul cagr excel” as a small building block rather than a chore. Once the inputs sit in their own cells and the formula reads from them, the same setup answers a dozen related questions with a tweak, and Excel keeps every dependent figure current as the data changes. The tool above is there so you can rehearse and verify before committing anything to a real workbook; the steps and worked example are there so the logic sticks. Get it right once and it stops costing you time — it starts saving it, every time the question comes back around.

Common mistakes

• Using a simple average of yearly returns — it overstates compounded growth; CAGR is the geometric rate.
• Counting the wrong number of years (use elapsed years, not the count of data points).
• Feeding a zero or negative starting value, which makes the ratio meaningless.
• Leaving the cell as a raw decimal (0.07) instead of formatting it as 7%.

Frequently asked questions