HCR-20 Style Risk Assessment Calculator

Aggregate Historical, Clinical and Risk-management subtotals into a single HCR-20 style risk score (0–40) and assign a low/moderate/high tier.

Historical subtotal (H, 0–14)

Clinical subtotal (C, 0–14)

Risk management subtotal (R, 0–14)

How to Use the HCR-20 Style Risk Assessment Calculator

Enter each of the three subtotals.
Click Calculate to see total score, tier and percentage of maximum.

Casos de Uso

•Teaching forensic psychology.
•Simulating HCR-20 totals in training.
•Research thought-experiments.

Fórmula

Total = H + C + R. Tiers: 0–13 low, 14–26 moderate, 27–40 high. Each subtotal comes from 20 items scored 0–2.

Perguntas Frequentes

Is this a clinical tool?

No — this calculator is an educational aggregator of pre-rated subtotals. A real HCR-20 assessment must be completed by a trained forensic clinician using the full manual.

Why three subtotals?

HCR-20 version 3 groups 20 items into Historical (past), Clinical (current) and Risk management (future) domains, each scored 0/1/2.

Are cut-offs fixed?

The original scheme is a clinical judgement, not a strict cut-off. The low/moderate/high bands here are a teaching simplification.