Keto Macro Calculator

The ketogenic diet is a very low-carb, high-fat diet that shifts your body into ketosis — a metabolic state where fat becomes the primary fuel source instead of carbohydrates. Typically, carbs are limited to 20-50g net carbs per day.

Most people enter ketosis within 2-7 days of restricting carbs to 20g or less. Symptoms may include the 'keto flu' (fatigue, headaches) which typically resolves within 1-2 weeks.

Short-term keto is generally safe for most healthy adults. Long-term effects are less studied. It's not recommended for pregnant women, those with kidney disease, or type 1 diabetics without medical supervision.