On a ketogenic (keto) diet, the typical carbohydrate intake is limited to less than 50 grams of net carbs per day, with many sources recommending around 20 grams per day to ensure the body enters and stays in ketosis. Net carbs are calculated by subtracting fiber and some sugar alcohols from total carbs, as these do not significantly affect blood glucose

. The general macronutrient breakdown for keto is about 70-80% fat, 5-10% carbohydrates, and 10-20% protein, with the carb limit usually translating to under 50 grams of net carbs daily. Some people may need to stay closer to 20 grams to maintain ketosis, especially when starting out, while others might tolerate slightly more depending on individual factors

. Foods high in carbs such as grains, starchy vegetables, beans, legumes, and most fruits are typically avoided or limited. Instead, the diet focuses on high-fat foods like fatty meats, butter, oils, nuts, seeds, and low-carb vegetables

. In summary:

• Aim for under 50 grams of net carbs per day on keto, with 20 grams being a safer target for most to maintain ketosis.
• Net carbs = Total carbs - Fiber - (half of sugar alcohols).
• Macronutrient ratio is roughly 70-80% fat, 5-10% carbs, and 10-20% protein.
• Carb-rich foods like grains, starchy vegetables, and most fruits are avoided.

This approach helps shift the body's metabolism from glucose to fat for energy, inducing ketosis