Chocolate and Diabetes: Carbs, Glycemic Index and Portions
One ounce of milk chocolate has about 17 g of carbohydrate (16 g net). Glycemic index: low (39 to 54). Occasionally, in small amounts. Chocolate has added sugar and fat, so a square or two is a counted treat.
Milk chocolate is mostly sugar and fat. A small piece is easy to fit in, and a whole bar is a lot of carbohydrate. The fat makes the glycemic index look low, but the grams still count.
Dark chocolate usually has less sugar, but it is not carbohydrate-free. Check the label rather than assuming the percentage tells you the carbohydrate.
Carbs in chocolate by portion
| Portion | Grams | Carbs (g) | Fiber (g) | Net carbs (g) | Protein (g) |
|---|---|---|---|---|---|
| 1 oz | 28 | 17 | 1 | 16 | 2.2 |
| bar, miniature | 7 | 4.2 | 0.2 | 3.9 | 0.5 |
| bar | 44 | 26 | 1.5 | 25 | 3.4 |
| cup chips | 168 | 100 | 5.7 | 94 | 13 |
| 100 g (for comparing foods) | 100 | 59 | 3.4 | 56 | 7.7 |
Source: USDA FoodData Central, FDC ID 167587 (Milk chocolate). Net carbs here means carbohydrate minus fiber. “Net carbs” is not an FDA-defined term, so total carbs are shown too. Values are estimates for a typical item; brands, ripeness and size vary.
Glycemic index and glycemic load
GI ranks how fast a food raises blood glucose compared with pure glucose (100). Low is 55 or less, medium 56 to 69, high 70 or more. Milk and dark chocolate and chocolate bars were tested separately. Glycemic load multiplies the index by the available carbohydrate in a portion (carbs minus fiber), so it reflects how much you actually eat: low is 10 or less, medium 11 to 19, high 20 or more.
Which published values we used (4)
| Entry | Food as listed | GI |
|---|---|---|
| Suppl. Table 1, #1592 | Chocolate, milk, Meiji brand (Meiji Co. Ltd, Japan) | 39 |
| Suppl. Table 1, #1594 | Chocolate, milk (Milka, Mondelez, Italy) | 54 |
| Suppl. Table 1, #1595 | Chocolate, milk (Nestlé, Sydney, NSW, Australia) | 42 |
| Suppl. Table 1, #1596 | Milk chocolate egg (Ovetto cioccolato, Dolci Preziosi, Italy) | 48 |
Atkinson FS et al. International tables of glycemic index and glycemic load values 2021. Am J Clin Nutr 2021;114(5):1625-1632. Glucose reference (glucose = 100); values from studies that used white bread were converted by the authors. Where studies differ we show the range, not an average.
Glycemic index is only one piece of the picture. The same food can give a different response depending on ripeness, cooking, what you eat it with and your own body, so your meter or CGM is the best guide.
How chocolate fit the plate method
Chocolate count toward the carbohydrate quarter of the plate in the plate method, along with grains, starchy vegetables, fruit and milk. The CDC describes the plate method as half non-starchy vegetables, a quarter protein and a quarter carbohydrate foods. See the diabetic meal plan guide for how it works, or drop chocolate onto a meal in the meal planner to watch the plate fill.
Portion ideas and pairings
- One ounce, about a small square or two.
- Eat it slowly after a meal rather than on an empty stomach.
- Sugar-free chocolate often contains sugar alcohols that can upset the stomach.
Pairs well with: a few strawberries, a handful of nuts, after a balanced meal.
Related foods
Honey
1 tbsp: 17 g carbs
Vanilla ice cream
serving 1/2 cup: 16 g carbs
Maple syrup
1 tbsp: 13 g carbs
Banana
1 medium: 27 g carbs
See all foods and the low glycemic foods list
Frequently asked questions
Is dark chocolate better for diabetes?
It tends to have less sugar, so a small piece can fit more easily, but it is still a treat with fat and calories. Check the label.
How many carbs are in one ounce of milk chocolate?
About 17 g of carbohydrate, of which about 1 g is fiber, so roughly 16 g net carbs. Values are from USDA FoodData Central for 28 g and are estimates; brands and sizes vary.
Information only, not medical advice. Your care team may set different targets for you, and only a lab test ordered by a clinician can diagnose diabetes or prediabetes. See our medical disclaimer.
Sources
- USDA FoodData Central: Milk chocolate (FDC ID 167587)
- Atkinson FS et al. International tables of glycemic index and glycemic load values 2021. Am J Clin Nutr 2021;114(5):1625-1632
- CDC: Diabetes Meal Planning (plate method and carbohydrate counting)
- ADA Standards of Care in Diabetes—2026, Section 5: Facilitating Positive Health Behaviors
Last reviewed: by the Diabetes Blogs editorial team. Information only, not medical advice.
