To use the calculator, select an event (or enter the distance), enter your details and result, then press Age-grade to lookup the WMA factor. This factor is used to calculate an age-graded result, which can be compared between athletes of different ages.
Also shown are the Open and age-graded standards set by WMA. Your age-performance as a percentage of the Age standard is calculated from these. This performance can be compared between different events.
Pressing Result will calculate your result for a given age-performance – eg, use your age-performance in one event to predict a different event or the same event at a different age.