The short answer is yes if you limit the amount. I would recommend on days where you want to eat a sweet potato to severely restrict the other carbs you will eat the rest of that day. After all a SWEET POTATO is a double carbohydrate whammy.
A sweet potato is a type of starchy root vegetable that’s often excluded from ketogenic diets because of its naturally high carb content.
However, with proper planning, some people may still be able to successfully incorporate small portions of sweet potato into a keto diet plan.
A medium-sized sweet potato (150 grams) contains a total of 26 grams of carbs. After subtracting the 4 grams that come from fiber, you’re left with a net value of roughly 21 grams of carbs per potato (3Trusted Source).
If you’re on a keto diet that limits you to 50 grams of carbs per day, you could opt to expend approximately 42% of your carbs on a whole sweet potato if you want to.healthline.com