machine-learning
Free
Accuracy Calculator
Calculate classification accuracy from true/false positives and negatives.
Open toolMachine Learning & AI
Interactive demos and explainers that run entirely in your browser.
machine-learning
Free
Confusion Matrix Calculator
Enter TP, FP, FN, and TN and get every derived metric: accuracy, precision, recall, specificity, F1, and more.
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machine-learning
Free
F1 Score Calculator
Compute the F1 score — the harmonic mean of precision and recall — from TP, FP, FN, TN.
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machine-learning
Free
MAE Calculator
Compute the mean absolute error of a regression from actual vs predicted value pairs.
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machine-learning
Free
MSE Calculator
Compute the mean squared error of a regression from actual vs predicted value pairs.
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machine-learning
Free
Precision Calculator
Compute precision — the share of positive predictions that were actually correct.
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machine-learning
Free
Private
ML & Data Science Quiz
Test yourself with random multiple-choice questions on machine learning, data science, and AI.
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machine-learning
Free
R-Squared Calculator
Compute R² (coefficient of determination) — the share of variance in the actuals explained by the model.
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machine-learning
Free
Recall Calculator
Compute recall (sensitivity) — the share of actual positives the model managed to find.
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machine-learning
Free
RMSE Calculator
Compute the root mean squared error of a regression — MSE back in the target's units.
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machine-learning
Free
ROC-AUC Calculator
Compute the area under the ROC curve from a list of model scores and binary labels (0/1).
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machine-learning
Free
Sensitivity Calculator
Compute sensitivity (recall) — the share of actual positives correctly detected by a test or model.
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machine-learning
Free
Specificity Calculator
Compute specificity — the share of actual negatives the model correctly identified.
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