Work out age grade percentage instantly with clear inputs, formula shown and shareable results.
Age-grade percentage is the age-and-sex world standard divided by your actual time. 42 minutes against a 28:30 standard is 67.9%, so a time of 35:38 would be needed to reach the 80% national-class threshold. The measure lets a 70 year old and a 25 year old compare performances meaningfully.
Age-grade percentage
percentage = standard time / actual time x 100
Target time
target = standard / desired percentage
This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.
World Masters Athletics publishes tables of the best recorded performance for each age, sex and distance, updated periodically.
No - it is designed to remove the age advantage, so a 60% grade means the same relative standard at any age.