Sortino Ratio Calculator

Sortino Ratio Calculator

Free online Sortino ratio calculator to measure risk-adjusted return using downside risk instead of total volatility. This calculator is useful for investors, portfolio managers, finance students, analysts, and anyone comparing investment performance while focusing specifically on harmful downside variation. Sortino ratio is closely related to Sharpe ratio, but it only penalizes downside deviation rather than all volatility. That makes it especially useful when an investment has upside volatility that is not necessarily a problem for the investor.

This calculator uses four main inputs. Portfolio value means the current amount invested. Portfolio return means the return earned by the portfolio over the period. Target return means the minimum acceptable return or required benchmark return. Downside deviation means the volatility of returns below that target. Once those values are entered, the calculator shows Sortino ratio, excess return over target, portfolio ending value, and target ending value. These outputs help you compare what the portfolio earned against the required return and the downside risk taken to earn it.

The formula of Sortino ratio

Excess return over target = Portfolio return – Target return

Sortino ratio = Excess return over target / Downside deviation

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

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

Here portfolio return means the actual return earned, target return means the minimum acceptable return, excess return over target means the amount by which the portfolio exceeded that target, downside deviation means the volatility of returns below the target, Sortino ratio means excess return per unit of downside risk, portfolio ending value means the ending value at the actual portfolio return, and target ending value means the ending value if the portfolio had only achieved the target return.

Solved Example

Example 1: Find the Sortino ratio if portfolio value is $100,000, portfolio return is 12%, target return is 4%, and downside deviation is 8%.

Solve: Excess return over target = 12% – 4% = 8%

Sortino ratio = 8% / 8% = 1.0000

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

Target ending value = 100000 x 1.04 = $104,000

Example 2: Find the result if portfolio value is $75,000, portfolio return is 10%, target return is 5%, and downside deviation is 4%.

Solve: Excess return over target = 10% – 5% = 5%

Sortino ratio = 5% / 4% = 1.2500

Portfolio ending value = $82,500

Target ending value = $78,750

Example 3: Find the result if portfolio value is $60,000, portfolio return is 7%, target return is 4%, and downside deviation is 10%.

Solve: Excess return over target = 7% – 4% = 3%

Sortino ratio = 3% / 10% = 0.3000

Portfolio ending value = $64,200

Target ending value = $62,400

Table of Sortino ratio calculator

How to use this Sortino ratio calculator

Enter the portfolio value in the proper input field. After that, enter portfolio return, target return, and downside deviation as percentage values. Then click the calculate button. The calculator will show Sortino ratio, excess return over target, portfolio ending value, and target ending value in the result box.

This calculator is especially useful when you want a risk-adjusted metric that focuses only on downside risk. Many investors do not view upside volatility as harmful, so using total volatility can sometimes understate how attractive an investment really is. Sortino ratio helps solve that by only using downside deviation in the denominator. That makes it useful for fund comparison, portfolio screening, and evaluating strategies that may have uneven or positively skewed return distributions.

When using the result, remember that Sortino ratio depends on how the target return and downside deviation are measured. Different time periods and estimation methods can lead to different values. Even so, Sortino ratio remains one of the most practical ways to compare return against downside risk rather than total volatility. This calculator gives a fast way to measure that relationship for investment review, risk analysis, and finance learning.