F1 Score Calculator
Compute F1 = 2PR / (P + R) from precision and recall.
Input Data
Input Precision P.
Input Recall R.
Results
0.615385
F1 = 2PR / (P + R).
At a glance:F1 Score Calculator: enter parameters to compute results; complements related calculators.
Formula
F1 = 2·P·R / (P + R).
How to Use
- Enter precision and recall.
- It returns the F1 score.
Case Studies
P=0.8, R=0.5 → F1≈0.615
F1 = 0.8/1.3 ≈ 0.6154.
FAQ
F1 vs accuracy?
F1 is robust to imbalance, balancing precision and recall.
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.