Sharpe Ratio: Comparing investments fairly

The Sharpe ratio measures how much return you get for each unit of risk assumed.

An investment giving 10% return with low volatility is better than one giving 10% with high volatility.

A Sharpe ratio above 1 is respectable; above 2 is excellent.

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Frequently asked questions

Is the Sharpe ratio enough to choose an investment?

No, it's one indicator.

What's a good Sharpe ratio?

It depends on context. In stocks, >1 is good.