Tools & calculators

Free, instant, and built on the same data as the database.

The Fuel Check

Score a whole snack stack against your goal — on carb quality, not just calories.

Build a food set for your macro + micronutrient goals.

Race-day fueling by body weight and event.

Your daily carb target by activity and goal.

Total carbs − fiber − sugar alcohols, instantly.

Check any food's keto verdict on zero.carbs.com.