Z-Score & T-Score Calculator
Convert raw scores to standardized scores
Results
Z-Score
T-Score
About Standardized Scores:
- Z-Score = (Raw Score - Mean) / Standard Deviation
- T-Score = (Z-Score × 10) + 50
- Z-Score Interpretation:
- 0: Score equals the mean
- +1: One standard deviation above mean
- -1: One standard deviation below mean
- T-Score Interpretation:
- 50: Average performance
- 60: One standard deviation above average
- 40: One standard deviation below average