Masters age grading calculator

WMA's 2023 tables give each event one factor per year of age, from 30 to 110. A factor is the open standard divided by the best time expected at that age, so it falls below 1 as sprinters slow down. Your time multiplied by your factor is your age-graded time, the open-age equivalent of your run. The open standard divided by your factor is the age standard, the time that scores 100% at your age.

The open standard here is the World Athletics world record: 9.58 for the men's 100m and 10.49 for the women's, with the indoor record for the 60m. The 2023 WMA document lists factors and leaves the open standard to whoever uses them, so other calculators may grade women's sprints against more recent marks and show higher percentages. The factor and the age-graded time come straight from the tables and stay the same in any calculator that uses them.

The rulebook's own example is a 50-year-old man who runs 13.12 in the 100m. His factor is 0.9031, so 13.12 × 0.9031 = 11.848672, which WMA rounds up to 11.85 because rounding may never help the athlete. His age standard is 9.58 ÷ 0.9031 = 10.61, and his age grade is 80.85%.

For masters combined events, WMA uses five-year factors: everyone in M50–54 takes the age-50 factor. An age grade uses the factor for your exact age, which is what this calculator does. Hand times need converting first; the hand timing to FAT converter adds the same 0.24 s (up to 200m) and 0.14 s (400m) that WMA's Appendix B uses.

The 100m time that scores 100% at the first age of each five-year group. A 60-year-old man running 11.37 or a 60-year-old woman running 12.52 is level with the world record once age is accounted for.