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Running Age-Grade Performance Factor Calculator

Age grade % = world_best_at_age / your_time × 100.

Calculates running age-grade performance percentage to compare times fairly across age groups using WMA age-grading factors.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Age-grade% = (WB_standard × age_factor / your_time) × 100

In depth

Calculates running age-grade performance percentage to compare times fairly across age groups using WMA age-grading factors.