Dear Spraying, The "I Can't Believe It's Not Butter" spray has ZERO calories if you use just a few spritzes. However, if you do what most of us do and spray to your heart's content, you can rack up calories and fat grams pretty quickly. Here's the scoop: 12.5 sprays is 10 calories and 1 gram of fat, 25 sprays (1 teaspoon) is 20 calories and 2 grams of fat, and 37.5 sprays is 30 calories and 3 grams of fat. In case you're curious, the entire bottle contains 900 calories and 90 grams of fat! Helpful hint: When it comes to this stuff, stick with spraying as opposed to pouring.