Carb Cycling Calculator
Calculate your daily carbohydrate, protein, and fat distribution across High, Moderate, and Low carb days to overcome fat loss plateaus.
Heavy training days (Legs/Back). Replenishes muscle glycogen and stimulates metabolism.
Standard workout days (Upper Body/Push). Sustains training volume and recovery.
Rest & active recovery days. Maximizes fat oxidation in a deeper caloric deficit.
How Carb Cycling Breaks Fat Loss Plateaus
Carbohydrate Cycling is a strategic dietary protocol that alternates between high-carb, moderate-carb, and low-carb days throughout the week. Unlike chronic linear caloric deficits that lead to metabolic adaptation, down-regulated thyroid hormones (T3), and reduced leptin levels, carb cycling provides periodic carbohydrate boluses on heavy training days to stimulate metabolic rate and replenish muscle glycogen.
The 3 Day Types Explained
- High Carb Days (1–2 Days/Week): Scheduled on your most demanding training sessions (e.g. heavy leg day or back workout). Carbohydrates make up 50% of total calories while dietary fat is kept low (under 50g) to maximize glycogen synthesis and trigger a surge in leptin.
- Moderate Carb Days (2–3 Days/Week): Scheduled on standard resistance workouts (Push, Pull, Upper Body). Sustains workout intensity with balanced 35–40% carbs, 30% protein, and 30% fat.
- Low Carb Days (2–3 Days/Week): Scheduled on rest or active recovery days. Carbs are limited to fibrous vegetables, and total calories drop into a 20–25% deficit, forcing the body to oxidize stored triglycerides for fuel.
Reviewed against peer-reviewed primary sources by the TDEEmacro Editorial Team · Last reviewed 2026-08-24
Formulas and clinical thresholds on this page are grounded in peer-reviewed primary literature and established physiological standards. Always consult a registered dietitian or physician before changing your dietary or exercise protocol.
- Carbohydrate availability and training adaptations Burke LM, et al. Carbohydrates for training and competition. J Sports Sci. 2011;29(Suppl 1):S17-S27.
- Intermittent energy restriction and leptin stimulation Peos JJ, et al. Continuous versus Intermittent Dieting for Fat Loss and Lean Mass Retention in Resistance-Trained Athletes. Med Sci Sports Exerc. 2019;51(6):1260-1269.
Frequently Asked Questions
What are the benefits of carb cycling over a steady calorie deficit?
Carb cycling prevents the metabolic slowdown and leptin decline associated with chronic dieting by providing high carbohydrate refeeds on intense training days while maintaining a caloric deficit on rest days.
How should I schedule High, Medium, and Low carb days?
Place High Carb days on your hardest training sessions (Legs/Back), Moderate Carb days on upper body workout days, and Low Carb days on rest or active recovery days.
How much protein should I eat while carb cycling?
Keep protein intake stable every day at 2.0 to 2.2 grams per kilogram of body weight (0.9 to 1.0g per pound). Adjust only carbohydrates and fats to create caloric cycling.