Sensitivity / Specificity
Calculate Sensitivity / Specificity instantly with the exact formula and a worked example.
Sensitivity / Specificity
True positives (TP)
False negatives (FN)
True negatives (TN)
False positives (FP)
Sensitivity
90%
Specificity
80%
LR+ (likelihood ratio)
4.5
LR− (likelihood ratio)
0.125
Accuracy
85%
Youden index
0.7
More about: Sensitivity / Specificity
What it calculates
The “Sensitivity / Specificity” calculator computes Sensitivity in % from 4 parameters: true positives (tp), false negatives (fn), true negatives (tn), false positives (fp).
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters True positives (TP) = 90, False negatives (FN) = 10, True negatives (TN) = 80, False positives (FP) = 20 the result is 90 %.
How to use
- Enter true positives (tp), false negatives (fn), true negatives (tn) and false positives (fp) — each field above is adjustable with a slider.
- Sensitivity (%) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
Related calculators
FAQ
How is Sensitivity / Specificity calculated?
The Sensitivity / Specificity calculator computes Sensitivity (in %) from true positives (tp), false negatives (fn), true negatives (tn), false positives (fp). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Sensitivity / Specificity calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
More calculators in this category
Explore related free tools