Free Calibration Planning Tool
Team Calibration Group Size Calculator
How many employees should be in each calibration session? Get optimal groupings and a full session plan for your org.
Your Organization
Include everyone who'll receive a performance rating this cycle
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Your Calibration Session Plan
Recommended Session Breakdown
How this is calculated: Session size research from I/O psychology shows optimal calibration groups are 8–15 employees per session. Larger groups lead to fatigue and anchoring bias; smaller groups lose cross-calibration value. Time per employee assumes 5 min for consensus ratings, 8 min for contested discussions.
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