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Age Graded Race Performance Calculator

Work out age graded race performance instantly with clear inputs, formula shown and shareable results.

About Age Graded Race Performance Calculator

Age grading compares your time with the world standard for your age, so performances across decades become comparable. A 48 minute 10 km at 45 against a 26:18 open standard gives about 62%, because the age factor of 1.078 relaxes the standard to 28:21. Anything over 80% is regional class and over 90% is world class.

Formulas

Age-graded percentage

grade = age standard time / actual time x 100

Age factor

approximately 1 + 0.0045(age - 30) + 0.00012(age - 30)^2

Worked example

With the default values below, Age Graded Race Performance Calculator returns Age-Graded Performance of 59.97%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Your race timeminimum 0.1 min
48 min
Your ageaccepts 5–100 years
45 years
Open-class world standard for the distanceminimum 0.1 min
26.3 min

Results

Age-Graded Performance
59.97%
Age Factor Applied
1.0945
Age-Group World Standard
28:47
Your Time Adjusted To Open Class
43:51

Step by step

  1. 1Values used
  2. 2Age-graded percentage
  3. 3Age factor
  4. 4Age-Graded Performance= 59.97
  5. 5Age Factor Applied= 1.0945
  6. 6Age-Group World Standard= 28:47
  7. 7Your Time Adjusted To Open Class= 43:51

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

This is an estimate from population-average equations, not a medical or diagnostic assessment. Individual results vary with genetics, training history and technique. Seek advice from a qualified coach or clinician before making significant changes to training.

Frequently Asked Questions

What percentage is good?

Above 60% is above average, 70% is a good club runner, 80% is regional class and over 90% is national or world class.

Are the official factors the same as this?

Official WMA tables are distance and sex specific and slightly different. This is a general approximation of their shape.

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Age Graded Race Performance Calculator | Calcrivo