Net carbs calculator
Calculate net carbs and compare to a typical keto limit.
When to use
- •If you track carbs from nutrition labels.
- •If you want to understand fiber and sugar alcohol impact.
- •If your daily carb limit is exceeded without a clear reason.
- •If you compare packaged foods or recipes side by side.
Enter values
Net carbs
Net = total − fiber − 1/2 sugar alcohols
Compared to a limit
What it means
4#1
Net carbs are the portion that impacts blood glucose.
#2
Sugar alcohols are partially absorbed, so we count 50%.
#3
Foods with similar net carbs can differ in satiety and tolerance.
#4
Use your own response to fine-tune product choices.
Tips
5Check labels: not all sugar alcohols behave the same.
Spread carbs across meals to stay within your limit.
Prefer whole foods when possible for simpler tracking.
Test new products in small portions first.
Keep a 3–5 g buffer for label rounding variance.
FAQ
4Why 50%?
It’s a practical average for most sugar alcohols.
Can I use a different rule?
Yes, some people use 0% or 100% depending on type.
Is fiber always fully subtracted?
Usually yes, but individual tolerance to foods still varies.
Why does my app show different values?
Databases and manufacturer rounding can differ.
Formula is approximate and depends on the product.