T-Score Grade Calculator
Calculate T-scores and convert them to letter grades (Mean=50, SD=10)
T-Score: A standardized score with Mean = 50 and Standard Deviation = 10. Formula: T = 10z + 50
T-Score Reference
T = 70: Top 2%T = 60: Top 16%T = 50: AverageT = 40: Bottom 16%
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.