The easiest macro to calculate in the ketogenic diet is fat. Once you've got your carbs and protein set, simply fill the rest of your daily calorie needs with fat sources. If you find yourself wanting to gain a bit of weight, add approximately 500 calories, or 55 grams. If you want to lose weight, cut down on your fat intake by 200-500 calories, or 22-55 grams.
That is, until it's snack time—then, if you're on the keto diet, your'e basically SOL (unless, you know, you like having an entire steak for a snack). Think about it: All the best snacks are off limits on the keto diet (damn that fickle 70 percent fat, 25 percent protein, 5 percent carbs ratio). Granola bars, crackers, cookies—all off-limits on a keto diet.
Note: Are you a vegetarian or vegan and want to go on a ketogenic diet? It’s still possible! Just keep in mind that the dietary restrictions can sometimes be a little bit intense. Make sure to plan ahead and prepare to aid your success. To help out, we’ve published articles (with 7 day meal plans included) for both the vegetarian ketogenic diet and the vegan ketogenic diet.