- How do you calculate a net carb?
To calculate net carbs, take a food's total carbs and subtract: Fiber. Since our body doesn't have the enzymes to break down fiber, it passes through our digestion system unchanged.

- How do I manually calculate keto macros?
Your Keto Macros Percentage To calculate your macros a percentage, just divide the calories from each macro into your daily calorie needs and multiply by 100%. For example: (80/1800) x 100% = 5% of calories from carbs. (600/1800) x 100% = 33% of calories from protein.