Calculadora de Recordes por Faixa Etaria
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
age_grade% = (WR_time / seu_tempo) × 100
About this calculator
This age grading calculator compares your race time to the world record for your age group. The result is a percentage indicating how close you are to the record. For example, 80% means your time is equivalent to 80% of the world record in your category.
The formula is simple: age_grade% = (world record time / your time) × 100. The higher the percentage, the better the performance. It allows runners of different ages to fairly compare results, accounting for the natural decline in performance with age.
Use this tool to track your progress over time, set realistic goals, or compare your performance with friends in other age groups. It is especially useful for amateur runners participating in events like 5k, 10k, half marathon, and marathon.
Note: This calculator uses official world records by age group, which may vary by organization (e.g., World Athletics). It only considers time, ignoring factors like altitude, weather, or course type. Use as a reference, not an absolute measure of ability.
Frequently asked questions
How do I interpret the age grading percentage?
The percentage indicates your performance relative to the world record in your age group. Above 90% is elite; 80-90% is very good; 60-80% is good; below 60% could be improved.
Does the calculator work for any distance?
Yes, as long as you have the world record for your age group for that distance. The calculator uses official records, but you can manually enter the record if you know it.
Why is my percentage different for different race distances?
Each distance has its own world record per age group. Your relative performance can vary by distance, as some people are better at short or long races.
What if my time is better than the world record for my age?
This is rare but can happen if the record is outdated. The percentage will exceed 100%, indicating you beat the record in the database. Check if the record is correct.
Can I use this calculator for swimming or cycling?
The calculator is generic but designed for running. You can adapt it for other sports if you have the world records by age group. The formula is the same.