Calculate CAGR in Seconds
Use this tool to find the cumulative annual growth rate (CAGR) between a starting value and ending value over a chosen number of years.
What is cumulative annual growth rate?
Cumulative annual growth rate (commonly called CAGR) is a way to describe growth as if it happened at a steady rate every year. Real-world results bounce up and down, but CAGR gives you one clean number that summarizes overall performance across a period.
Whether you are measuring an investment portfolio, revenue, customer base, or even website traffic, CAGR makes comparisons easier. It answers this question: “What fixed annual rate would take me from my starting value to my ending value over this many years?”
The CAGR formula
Multiply by 100 to convert it into a percentage. For example, a result of 0.1245 equals 12.45% per year.
Quick interpretation guide
- Positive CAGR: the value increased over time.
- Zero CAGR: no net change across the full period.
- Negative CAGR: the value declined over time.
How to use this calculator
- Enter your Beginning Value (starting amount).
- Enter your Ending Value (final amount).
- Enter the Number of Years for the full period.
- Click Calculate Growth Rate.
The tool returns your CAGR, total cumulative growth, annual growth multiplier, and (if growth is positive) an estimated doubling time.
Example calculation
Suppose you invested $10,000 and it became $18,000 after 5 years.
- Beginning Value = 10,000
- Ending Value = 18,000
- Years = 5
CAGR = (18,000 / 10,000)1/5 − 1 ≈ 12.47% per year.
This does not mean the investment gained exactly 12.47% every single year. It means that a steady 12.47% annual rate would produce the same final result.
CAGR vs average annual return
Simple average return
If yearly returns were +20%, -10%, and +15%, the arithmetic average is 8.33%. But that ignores compounding effects.
CAGR
CAGR accounts for compounding and gives the more realistic long-term annualized growth figure. For performance analysis across multiple years, CAGR is generally more useful than a plain average.
Where CAGR is useful
- Comparing two mutual funds over the same time period
- Evaluating business revenue growth over 3, 5, or 10 years
- Analyzing growth in subscribers, customers, or users
- Benchmarking your portfolio against market indices
- Planning long-term financial goals
Important limitations
CAGR is powerful, but it can hide volatility. Two investments can have the same CAGR but very different risk profiles. Always pair CAGR with other metrics when making decisions.
- It smooths out year-to-year fluctuations.
- It does not reveal maximum drawdowns or risk.
- It assumes the measured period is representative.
- It does not include external cash flows unless adjusted.
Tips for better analysis
- Use longer time periods to reduce noise from short-term swings.
- Compare CAGR across similar assets and equal date ranges.
- Check inflation to estimate real (inflation-adjusted) growth.
- Combine CAGR with standard deviation and drawdown data.
Final takeaway
A cumulative annual growth rate calculator gives you a clear, apples-to-apples way to evaluate long-term performance. Use it as a core metric for planning, comparison, and decision-making—but never in isolation.