Daily Carbohydrate Calculator
Calculate your exact daily carbohydrate requirements and glycogen replenishment protocol based on body mass and training load.
Provides 1,680 calories from carbohydrates (4 kcal per gram).
ACSM / AND Scientific Carbohydrate Guidelines
Evidence-based daily carbohydrate targets based on training load:
| Activity Category | Guideline (g/kg/day) | Daily Target (for your weight) | Primary Goal |
|---|---|---|---|
| Light / Low Intensity | 3 – 5 g/kg | 210 – 350g | General health, desk workers |
| Moderate (~1 hr/day) | 5 – 7 g/kg | 350 – 490g | Gym training, team sports |
| High Endurance (1–3 hrs/day) | 6 – 10 g/kg | 420 – 700g | Running, distance cycling |
| Ultra Endurance (>4 hrs/day) | 8 – 12 g/kg | 560 – 840g | Triathletes, stage races |
| Ketogenic / Low-Carb | < 50g fixed (or 1–2 g/kg) | 20 – 50g | Ketosis, fat oxidation adaptation |
Carbohydrate Nutrition FAQs
How many carbohydrates do I need per day?
Carbohydrate requirements depend on body weight and training volume. According to the joint ACSM and Academy of Nutrition and Dietetics position stand, light activity requires 3–5 g/kg/day, moderate training requires 5–7 g/kg/day, and endurance athletes require 6–10 g/kg/day.
Why are carbohydrates essential for high-intensity training?
Carbohydrates are stored in the liver and skeletal muscle as glycogen. During anaerobic and high-intensity aerobic exercise (>70% VO2 max), intramuscular glycogen is the primary substrate for ATP resynthesis, preventing central nervous system fatigue and premature exhaustion.
What is the optimal carbohydrate intake post-workout?
To maximize muscle glycogen resynthesis following exhaustive training, sports nutrition science recommends consuming 1.0 to 1.2 grams of carbohydrate per kilogram of body weight per hour during the first 4 hours post-exercise.
Are low-carb diets effective for fat loss?
Yes. Reducing carbohydrate intake to 1–2 g/kg (or <50g for ketogenic diets) can promote rapid initial water loss and appetite suppression, though long-term fat loss depends fundamentally on maintaining an energy deficit.
Scientific References & Peer-Reviewed Literature
- Thomas DT, Erdman KA, Burke LM. (2016). Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and Athletic Performance. Journal of the Academy of Nutrition and Dietetics, 116(3), 501–528. PMID: 26920240.
- Burke LM, Hawley JA, Wong SH, Jeukendrup AE. (2011). Carbohydrates for training and competition. Journal of Sports Sciences, 29(sup1), S17–S27. PMID: 21660838.
- Jeukendrup AE. (2014). A step towards personalized sports nutrition: carbohydrate intake during exercise. Sports Medicine, 44(Suppl 1), S25–S33. PMID: 24791914.
