Keto Calculator
Calculate your daily macronutrient targets for a ketogenic diet based on your personal data and goals.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator estimates your daily macronutrient targets for a keto diet. Follow these steps:
- Enter your details – Select your Gender, then input your Age (18–100 years), Weight (30–300 kg), and Height (100–250 cm). All values must be in metric units.
- Choose your activity level – Pick the option that best matches your weekly exercise routine (from Sedentary to Extra active).
- Set your goal – Select Lose Weight, Maintain Weight, or Gain Weight.
- Click "Calculate" – The button will validate your inputs. If any field is out of range, it will show an error.
- Read your results – Your daily targets for Calories, Protein (g), Fat (g), and Carbs (g) appear below. Carbs are fixed at 20g, protein is 1.6g per kg of body weight, and fat fills the remaining calories.
Note: The calculator uses the Mifflin-St Jeor equation for BMR, multiplies by your activity factor, then adjusts for your goal (lose: -20%, gain: +20%).
Previous Results
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Frequently Asked Questions
The ketogenic diet is a low-carb, high-fat diet that shifts your body into ketosis, where it burns fat for energy instead of carbohydrates.
This calculator uses the Mifflin-St Jeor equation for BMR and standard keto macro ratios. It provides estimates; individual results may vary.
This calculator uses fixed ratios (20g carbs, 1.6g protein per kg, remaining fat). For custom ratios, consult a nutritionist.
