Food & nutrition

Carbohydrate Labels: Start With the Portion You Eat

Carbohydrate counting begins with the serving size and total carbohydrate line, not just the sugar line. A package may contain more than one serving. Work from the amount you actually eat and the goals set with your diabetes care team.

What to do next

  1. Find the serving size and total carbohydrate grams on the Nutrition Facts label.
  2. Multiply by the number of servings in your portion. Half a serving and two servings change the total.
  3. Use the carbohydrate target agreed with your clinician or dietitian; there is no single target for everyone.
  4. Record the food and portion when reviewing glucose patterns, especially if your usual serving differs from the label.

Make the plan fit your health needs

Do not calculate or change insulin doses from this article. Use only your prescribed dosing method. Marketing terms such as “net carbs” should not replace the counting method your diabetes team has taught you.

Put it into practice

Practice with a hypothetical label: if one serving contains 24 grams of carbohydrate and you eat one-and-a-half servings, the portion contains 36 grams. This is arithmetic practice, not a meal target. Bring labels that confuse you to your visit so your educator can work through them with you.

Notes for your next visit

Write these in your own notes or on a printed copy. Bring them to your follow-up.

  • Serving size on the package:
  • Total carbohydrate per serving:
  • My portion and calculated carbohydrate:

Sources and further reading

General education for adults. Follow your clinician’s individual plan and the current instructions for your prescribed product. If instructions conflict, ask your clinician or pharmacist to clarify. For a medical emergency, call 911.