Age grade calculator
Age grading scores your race time against the world best for your exact age and sex, so a runner of 60 and a runner of 25 can be compared fairly. A grade above 90 percent is world-class, 80 percent national, 70 percent regional and 60 percent a solid club standard. FitCalcs estimates your age grade with a smooth curve fitted to the World Masters Athletics tables, which extends our race predictor. For the official figure, check the current WMA tables. This is general information for runners.
How this is worked out
Age grading compares your time to the world-best time for your exact age and sex, so a 60-year-old and a 25-year-old can compare performances fairly:
age factor = (age-graded standard ÷ open standard)
age grade % = (open-standard time ÷ your adjusted time) x 100
FitCalcs approximates the World Masters Athletics age factors with a smooth curve fitted to their published tables. Above about 90% is world-class, 80% national, 70% regional, 60% local club standard. For the official figure, look up the current WMA tables.
An estimate using fitted age factors, not the exact WMA lookup. Editorially reviewed by FitCalcs, with each figure citing its source.
Calculators and Data Desk, FitCalcs
FitCalcs' editorial desk builds and documents the calculators, citing the underlying equation and the UK dataset behind every number. Health-related tools are editorially reviewed, with figures cited to named UK sources.
Last reviewed: 12 June 2026