How to Use the Carb Intake Calculator
Enter your body weight, workout goal, and training intensity to calculate your recommended daily carbohydrate intake for cutting, bulking, or maintenance.
Why Carbohydrates Matter
Carbohydrates are the primary fuel for muscles and the brain. They are directly used for ATP production during exercise and stored as glycogen in muscles. Too few carbs leads to rapid fatigue and muscle loss; too many convert to body fat.
Carb Guidelines by Goal
For fat loss: 0.9–1.4g/lb. For maintenance: 1.4–2.3g/lb. For muscle gain: 2.3–3.2g/lb. Endurance athletes may need up to 3.2–4.5g/lb on heavy training days.
Frequently Asked Questions
Low-carb diets show early weight loss results, but very low carb intake while exercising hurts performance and muscle retention. A moderate reduction (0.9–1.4g/lb) is recommended.
Complex carbs 1–2 hours before exercise and simple carbs within 30 minutes post-workout to replenish glycogen stores is the optimal strategy.
Complex carbs (brown rice, oats, sweet potato) digest slowly for sustained energy. Simple carbs (white rice, white bread, sugar) convert to energy quickly — ideal around workouts.