This calculator is based on the proposed new WMA Age Grading Tables for 2023 which have now been accepted. They cover single year ages from 30 to 110. The grading factors are from the work of WMA not EML Sports.

A calculator using 2010 / 15 factors can be found at

Performance for events measured by time is to be in the format of For example 10.49 in the 100m, 3:50.07 in the 1500m or 2:14:04 in the marathon.

The WMA Factor is used to modify the actual performance for the age and gender of the athlete and gives an estimate of the equivalent open age performance.

The Age Graded % is a relative measure of the age graded performance against the open age world record.

Notice any problems please drop us a note and it will get fixed.