Is this Age Grade Calculator free to use?

Yes, Age Grade Calculator is 100% free to use online with no installation or account required.

How do I use the Age Grade Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

Age Grade Calculator — Free Online Tool

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Calculate age-graded running performance percentage

Note: Age grade % = (age-standard time ÷ your time) × 100. Uses simplified factor by age.

Race

Your Time (minutes)

Open Standard Time (min)

Age Factor

⚠️ For educational and training purposes only. Consult a coach, physician, or certified trainer before making training or health decisions.