Age-Grade Calculator

Compare your running performance across ages and genders with the Age-Grade Calculator. Enter your age, sex, race distance, and finish time to get your age-graded percentage and age-graded time — showing how your result stacks up against the world-best standard for your age group.

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Results

Age-Grade Percentage

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Performance Standard

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Age-Graded Time

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Open-Class World Standard

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Your Time vs. Age Standard vs. World Standard

Frequently Asked Questions

What does an age-grading calculator do?

An age-grade calculator produces a percentage score for your race time by comparing it to the world-best time for your age and gender at that distance. For example, a score of 62% means your time is 62% as fast as the world record equivalent for your age group. It lets runners of different ages and genders compare performances on a level playing field.

What is an age-grading percentage?

Your age-grading percentage is calculated by dividing the age-standard time (the world-best time adjusted for your age and sex) by your actual finish time, then multiplying by 100. A higher percentage means a better performance relative to your peers worldwide. Each distance produces a different score, so a 70% at a 5K and a 70% at a marathon represent similar quality performances.

What do the age-grade percentage ranges mean?

The percentages map to approximate performance levels: 100% equals the world record, 90%+ is world class, 80%+ is national class, 70%+ is regional class, and 60%+ is local class. Anything above 60% is a solid performance by competitive running standards.

Why should I use an age-grading calculator?

Age-grading gives you a fairer benchmark for your fitness level by accounting for natural age-related decline in performance. Whether you're a 25-year-old or a 65-year-old, your score reflects how well you're performing relative to the best runners your age, making it a great way to track improvement over time or compare yourself with runners of different ages and genders.

How is the age-graded time calculated?

The age-graded time is calculated by multiplying your actual finish time by the age-factor for your age and gender. This produces the equivalent time you would have run as a peak-age open-class athlete. It's useful for comparing performances across different events and age groups.

Can I compare my age-grade score across different distances?

Yes, but with some caution. Age-grading percentages are designed to be comparable across distances, so a 70% score at a 5K and a 70% score at a half marathon represent similar levels of performance relative to world bests. However, most runners naturally excel at some distances more than others, so differences in scores across events also reflect event-specific strengths.

Do age-grading factors differ between men and women?

Yes. The open-class world standards (the benchmark times) are different for men and women, and the age-related adjustment factors also differ by sex. The calculator applies the correct standard and factor for your selected sex, ensuring your percentage accurately reflects your performance within your gender category.

How often are age-grading tables updated?

Age-grading tables are periodically updated by organizations like World Masters Athletics as world records are broken and statistical models are refined. The tables used in this calculator are based on widely accepted standards. Slight differences may exist between different calculators depending on which version of the tables they reference.

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