# CAGR Calculator

> CAGR calculator: convert a start value, end value, and holding years into compound annual growth rate for any investment. Free, private, runs in your browser.

- **Canonical URL:** https://boringtoolskit.com/cagr-calculator/
- **Category:** Finance & Investing
- **Evidence level:** authored-methodology
- **Reviewed:** August 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

CAGR = (end / start)^(1 / years) - 1.

## Worked example

$10,000 growing to $18,000 over 5 years: a 12.47% compound annual growth rate.

## Assumptions

- No contributions or withdrawals occur between the endpoints.
- The time period is measured in years.
- CAGR is a smoothed historical rate, not a forecast.

## Common questions

### What is a CAGR calculator and how does it work?

A cagr calculator computes the Compound Annual Growth Rate of an investment over a specified time period. It uses your starting value, ending value, and the number of years to calculate the average annual growth rate, all processed instantly in your browser.

### Is the cagr calculator free and do I need to create an account?

Yes, the cagr calculator is completely free to use with no signup required. It runs entirely in your browser, so your data is never stored on a server and your privacy is fully protected.

### How accurate are the results from the cagr calculator?

The cagr calculator applies the standard CAGR formula and delivers mathematically precise results. However, it assumes a smooth, consistent growth rate and does not account for volatility or market fluctuations, so treat it as an estimate rather than a guaranteed outcome.

## Related tools

- /future-value-calculator/
- /dca-investment-calculator/
- /stock-calc/

## Sources

- [Understanding investment returns](https://www.investor.gov/introduction-investing/investing-basics/glossary/annual-return)
- [Investor bulletin: performance claims](https://www.sec.gov/resources-for-investors/investor-alerts-bulletins/investor-bulletin-performance-claims)

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