Carb Calculator
Find a daily carbohydrate target based on activity level and bodyweight.
Daily carb target
Carb needs scale with training volume
Carbohydrate needs track more closely with training volume and intensity than with bodyweight alone. This calculator uses grams per kilogram of bodyweight ranges commonly cited in sports nutrition, scaling up from light activity to serious endurance training.
Athletes doing frequent high-intensity or long-duration sessions typically need considerably more carbohydrate to fuel training and support recovery than someone training lightly.
Where these numbers come from
The formulas and default values in this calculator are based on:
- General sports nutrition carbohydrate intake guidelines by training volume (grams per kilogram of bodyweight, scaling with activity level)
These are planning estimates for training purposes. Check with a coach, trainer, or physician before starting a new program or maxing out.
Frequently asked questions
Why does carb need scale with training volume instead of just bodyweight?
Carbohydrates are the primary fuel for higher-intensity exercise, so athletes training more, and at higher intensities, deplete and need to replenish glycogen more often.
Can I eat too few carbs while training hard?
Yes — chronically low carb intake alongside high training volume can hurt performance, recovery, and in some cases hormonal health, particularly for women.
Does carb timing matter, not just total amount?
Some athletes benefit from concentrating more carbs around training sessions, though total daily intake matters more than precise timing for most recreational athletes.
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