Dietary Fiber & Net Carbs
Why fiber is subtracted—and how it helps low-carb planning.
Fiber is a carbohydrate your body can’t fully digest. Because it isn’t converted into glucose, most low-carb and keto approaches subtract fiber when estimating net carbs.
High-fiber foods to know
- Nuts and seeds (almonds, chia, flax)
- Low-carb veggies (leafy greens, broccoli, cauliflower)
- Avocado and berries in moderation
Label reading tip
Some packages show “Total Carbohydrate” with fiber listed underneath as a sub-line. That fiber value is what you subtract in the calculator.
Practical win
Fiber makes meals more satisfying while keeping net carbs controlled. Try entering a salad with seeds and avocado into the calculator—you’ll see net carbs stay modest even when total carbs look higher.