Enter your sex, age, race distance, and finish time to get your age grade percentage — a single score that measures your running performance against the world record for your age and sex. Compare results across different distances and age groups to see how you truly stack up.
Age Grade Percentage
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Performance Standard
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Age-Graded Time
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WR Equivalent Time
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An age-grading percentage measures how your running time compares to the world record for your age group and sex over the same distance. A score of 100% means you matched the world record for your age and sex. Higher percentages indicate better relative performances, allowing fair comparisons between runners of different ages and sexes.
The calculation uses three values: the open-class world record for the distance, an age factor (which reflects how performance typically declines with age), and your actual finish time. The age standard is found by dividing the open-class standard by the age factor. Your age grade percentage is then: (age standard ÷ your time) × 100.
Generally, 90%+ is world class, 80%+ is national class, 70%+ is regional class, 60%+ is local class, and below 60% is still a respectable club-level performance. Most recreational runners score between 40% and 60%, while competitive club runners typically fall in the 60–75% range.
No — your age grade percentage is unique to each distance. Most runners are better suited to certain distances, so you may score higher at 5 km than at the marathon, or vice versa. Comparing your scores across distances is a great way to identify your strongest events.
Yes, that's one of the main purposes of age grading. Because the calculation accounts for age and sex, a 60-year-old runner and a 25-year-old runner can be fairly compared using their age grade percentages — even if they ran different distances or events.
Age factors are derived from statistical models based on world record progressions across age groups. They reflect the typical rate of performance decline with age and differ between males and females. The factors used in this calculator follow the widely referenced WMA (World Masters Athletics) age grading tables.
To target a specific age grade percentage, rearrange the formula: target time = age standard ÷ (desired percentage ÷ 100). For example, to achieve 70% age grade, divide your age standard time by 0.70. This gives you the finish time you need to aim for.
Yes. Age grading tables cover both road races (such as 5 km, 10 km, half marathon, and marathon) and track events (such as 100 m, 400 m, 1500 m, and 5000 m). The standards differ between surface types, so the calculator applies the correct set of reference values based on the surface you select.