Select gender and enter age (single year) and your result, then press Age-grade to give an age-graded result using the WMA 2023 factors (PDF).
Road (USATF) and Walks versions are also available.
Times can be entered as hh:mm:ss[.dd] - if no colon is supplied, the time will be taken as seconds; only one colon will be interpreted as mm:ss. Distances and heights can be entered in metres, with or without decimal places.
You can also convert an open result to one for your age by pressing Result.
Factors available as Excel file.