Carb Cycling Calculator (7-Day Plan)

7-day carb cycling plan

A typical week: 2 high-carb days on the hardest training days, 3 moderate days, 2 low-carb days on rest days. High days might carry 4–5 g carbs per kg body weight, moderate 2–3 g/kg, low around 1 g/kg, with protein constant and fat moving opposite to carbs. The calculator builds the schedule from your TDEE and goal.

Carb cycling for fat loss

Over a week, carb cycling is still a calorie deficit — the weekly average is what drives fat loss. The pattern’s advantages are practical: hard sessions are fuelled, low days feel manageable because they are short, and higher-carb days help with training performance and adherence. Evidence that cycling beats a steady deficit at matched calories is limited.

Macros on high vs low days

Keep protein at 1.6–2.4 g/kg every day. On high days carbs rise and fat drops toward 20% of calories; on low days fat rises toward 35% to keep meals satisfying. Total calories can be equal every day or slightly higher on high days; the calculator shows both options.

Who should (and should not) carb cycle

Useful for lifters and endurance athletes who train on some days and rest on others, and for people who find steady low-carb dieting hard. Not necessary for beginners or anyone who prefers a simple daily target — a consistent deficit with adequate protein achieves the same result. People with diabetes should not vary carbohydrate intake this way without medical guidance.

Sources

• ISSN Position Stand: protein and exercise, 2017 — https://pubmed.ncbi.nlm.nih.gov/28642676/
• ISSN Position Stand: nutrient timing, 2017 — https://pubmed.ncbi.nlm.nih.gov/28919842/
• Dietary Guidelines for Americans (current edition; AMDR) — https://www.dietaryguidelines.gov/

This calculator is educational and not medical advice. If you have a health condition, are pregnant, or are under 18, ask a clinician before changing your diet.