T Score Converter

Summary

Convert a raw score to a T score (mean=50, SD=10) or reverse a T score back to a raw score using your group mean and standard deviation.

How it works

1. Choose the conversion direction: Raw Score → T Score or T Score → Raw Score.
2. Enter the group mean and standard deviation for the reference population.
3. Input the raw score (or T score for reverse conversion).
4. The tool computes the z-score internally, then scales it to the T-score scale (mean 50, SD 10).
5. Results update instantly; copy the output with one click.

Use cases

• Interpret psychological test scores that use the T-score scale.
• Convert classroom raw scores to a normalized T-score distribution.
• Verify T scores computed by scoring software.
• Compare performance across different tests with different raw-score ranges.
• Reverse-engineer a raw score from a reported T score.
• Explain standardized score results to students or clients.

Frequently Asked Questions