Sensitivity and Specificity Calculator

This application will work out the Sensitivity and Specificity from the data you provide below.
Insert whole numbers for 'a' to 'd'

            Expected Result (Known Status)

 

Positive
Negative
  

Positive:

a

b

a = True Positives b = False Positives
c = False Negatives d =True Negatives

Negative:

c

d


  

 

Sensitivity = a/(a+c)

%
 

Specificity = d/(b+d)

%

If you wish to calculate the Positive Predictive Value and the Negative Predictive Value from your results above click below:

To work out PPV and NPVs from pre-calculated sensitivity and specificity values, go directly to the PPV-NPV Calculator

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