The low-carb diet and keto diet are two types of diets that restrict carb intake. Foods high in carbohydrates are not allowed in both diets. Grains, legumes, dairy, fruits, vegetables, processed foods, sugary foods, and some alcohol are restricted as well. Apart from such similarities, they have many differences too. 

The differences between these two diets are listed below:

• The keto diet is more restrictive than a low-carb diet. 
• On a low-carb diet, you can eat 50–150 grams of carbs per day, but on the keto diet, only 50 grams of carbs can be consumed per day.
• With low-carb diets, protein intake may be high, but with keto diets, protein intake should be moderate at around 20% of total calories. 
• Fat intake is higher on the keto diet than a low-carb diet. 

Both a low-carb diet and a keto diet can help you lose weight. Before deciding to do any diet, talk to your physician or dietitian, to determine which diet is best for you based on your goals.