Free Tool · PN23 Performance Nutrition

Teen Athlete
Carbohydrate Calculator

Calculate daily carb needs based on sport and training volume — in under 60 seconds.

Created by Guy Marshall, RD · PN23 Performance Nutrition

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Go beyond the numbers

Want more than just numbers?

PN23 teaches teen athletes the full system — when to eat, what to eat, and how much — through evidence-based modules, weekly energy tracking, and direct access to a registered dietitian.

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Disclaimer: This calculator provides general educational estimates based on published sports nutrition guidelines (ISSN, AND, DC, ACSM). Results are not a substitute for individualized medical or dietary advice. Consult a registered dietitian or physician for personalized recommendations.

© 2026 PN23 Performance Nutrition · Created by Guy Marshall, RD