Age Grade Calculator
Calculate your age-graded running performance and compare across age groups.
Your Details
hours
minutes
seconds
Age Grade
61.2%
Local Class
Age-Graded Time
42:45
Equivalent open age
Age Factor
95.0%
Of peak performance
Performance Levels
90%+World Class
80-89%National Class
70-79%Regional Class
60-69%Local Class
<60%Recreational
About Age Grading
Age grading allows runners of different ages and genders to compare performances fairly. It calculates what percentage of the world record for your age and gender your time represents. This enables masters runners to track their relative performance over time, even as absolute times naturally slow with age.
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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.