Keto & Low-Carb
Ketosis Timeline Estimator
Rough days until nutritional ketosis based on carb intake and activity.
Result
Estimated days to ketosis
2 days
Formula
Empirical: ≤20 g net carbs → 2–3 days; 21–50 → 4–5 days; >50 → 7–10 days. Regular exercise shaves ~1 day.
Related plans
Related Keto & Low-Carb calculators
- Keto Macro CalculatorDaily fat, protein and net carb targets for a standard ketogenic diet.
- Net Carb CalculatorNet carbs = total carbs − fiber − allowed sugar alcohols.
- Keto Ratio CalculatorTherapeutic classical keto ratio of fat to protein + carbs.
- Keto Electrolyte CalculatorDaily sodium, potassium and magnesium targets while in ketosis.
- MCT Oil Dose CalculatorSuggested MCT dose based on tolerance and calorie share.
- Keto Flu Risk Score0–10 risk score for keto-flu symptoms in your first week.
Turn this into a plan
Use these numbers to seed a personalized 7-day meal plan with a categorized grocery list and printable PDF.
Build my plan