Sharpe Ratio Calculator

Sharpe Ratio Calculator

Free online Sharpe ratio calculator to measure risk-adjusted return from portfolio return, risk-free rate, and return volatility. This calculator is useful for investors, portfolio managers, finance students, analysts, and anyone comparing investment performance after accounting for risk. Sharpe ratio is one of the most widely used risk-adjusted return measures in finance because it shows how much excess return an investment generated for each unit of total volatility. A higher Sharpe ratio usually suggests better return relative to risk, while a lower Sharpe ratio can mean the return did not compensate well for the volatility taken.

This calculator uses four main inputs. Portfolio value means the current amount invested. Portfolio return means the return earned by the investment over the period. Risk-free rate means the return available from a very low-risk investment over the same period. Return standard deviation means the volatility of the portfolio’s returns. Once those values are entered, the calculator shows Sharpe ratio, excess return, portfolio ending value, and risk-free ending value. These outputs help you compare the portfolio with a low-risk alternative and judge whether the extra volatility was worth it.

The formula of Sharpe ratio

Excess return = Portfolio return – Risk-free rate

Sharpe ratio = Excess return / Return standard deviation

Portfolio ending value = Portfolio value x (1 + Portfolio return)

Risk-free ending value = Portfolio value x (1 + Risk-free rate)

Here portfolio return means the investment return over the period, risk-free rate means the low-risk benchmark return, excess return means the return earned above that benchmark, return standard deviation means total volatility of the portfolio, Sharpe ratio means excess return per unit of total risk, portfolio ending value means the value after the portfolio return, and risk-free ending value means the value if the same amount had earned the risk-free rate instead.

Solved Example

Example 1: Find the Sharpe ratio if portfolio value is $100,000, portfolio return is 12%, risk-free rate is 4%, and return standard deviation is 10%.

Solve: Excess return = 12% – 4% = 8%

Sharpe ratio = 8% / 10% = 0.8000

Portfolio ending value = 100000 x 1.12 = $112,000

Risk-free ending value = 100000 x 1.04 = $104,000

Example 2: Find the result if portfolio value is $50,000, portfolio return is 9%, risk-free rate is 3%, and return standard deviation is 6%.

Solve: Excess return = 9% – 3% = 6%

Sharpe ratio = 6% / 6% = 1.0000

Portfolio ending value = $54,500

Risk-free ending value = $51,500

Example 3: Find the result if portfolio value is $80,000, portfolio return is 7%, risk-free rate is 4%, and return standard deviation is 12%.

Solve: Excess return = 7% – 4% = 3%

Sharpe ratio = 3% / 12% = 0.2500

Portfolio ending value = $85,600

Risk-free ending value = $83,200

Table of Sharpe ratio calculator

How to use this Sharpe ratio calculator

Enter the portfolio value in the proper input field. After that, enter portfolio return, risk-free rate, and return standard deviation as percentage values. Then click the calculate button. The calculator will show Sharpe ratio, excess return, portfolio ending value, and risk-free ending value in the result box.

This calculator is especially useful when two investments have different levels of return and volatility. Looking only at return can be misleading, because a high return may have required very large swings in value. Sharpe ratio helps adjust for that by showing how much extra return was produced for each unit of total risk taken. That makes it useful in fund comparison, portfolio review, performance reporting, and risk-adjusted decision-making.

When using the result, remember that Sharpe ratio depends on the time period used, the return measurement method, and the volatility estimate. It also assumes volatility is an acceptable proxy for total risk, which may not capture every real-world concern. Even so, Sharpe ratio remains one of the clearest and most practical risk-adjusted performance measures in finance. This calculator gives a fast way to compare portfolio return against both risk-free return and volatility.