The calculators almost always default to a deficit.
You can set them to maintenance.
I know it’s really scary, but think about it. 95% of those that follow CICO diets fail. That’s because it’s not a failure of the dieter but a failure of the diet. When you reduce calories, 2 main things happen. 1) your body compensates by reducing the amount of calories it burns. It will even lower its own body temp to conserve energy. So lowering calories by 30% will offset with an approximately equal reduction in the amount of calories your body burns. This lowers your BMR. 2) your body increases hormones that cause hunger. Your body actively works to achieve stasis. It wants to maintain body weight.
That’s because Obesity is NOT a problem with calorie imbalance. It is one of hormone imbalance. Particularly 2 hormones. 1) cortisone. Try to reduce stress as much as possible. Unfortunately this can’t always be controlled. 2) insulin. This is why you’re here trying Keto. There are 2 ways to control insulin.
The first is what you eat. Carbs increase insulin the most. Protein about half as much as carbs and fats have only a moderate insulin reaction. That’s why we say restrict carbs to 20 net grams or less, eat protein in moderation (only the minimum amount your body needs to maintain muscle mass) and eat fat to satiety. The second is when you eat. Limiting eating periods limits the amount of time your body releases insulin. Try to avoid snacking. When your hunger starts to reduce, attempt to shorten the window of time you eat per day. This is called Intermittent fasting or IF.
I know that’s a lot to absorb, but think of it this way. If CICO worked, would you be here right now?