Can toasted French or Vienna whole-wheat bread fit a keto diet?

Usually does not fit

Usually, no: toasted French or Vienna whole-wheat bread does not fit a keto diet.

1 medium or regular slice weighs 59 g and contains 29.1 g calculated net carbs. Its exact formulation can differ.

Check another amount

Values update from the same USDA record. They do not estimate a personal carb target or ketosis response.

Amount in grams

Listed source portion: 1 medium or regular slice (59 g).

Calculated net carbs

29.1 g

Total carbohydrate

31.9 g

Dietary fiber

2.7 g

Editorial illustration of Bread, French or Vienna, whole wheat, toasted.

Nutrition facts for Bread, French or Vienna, whole wheat, toasted

Source-portion carb band: Higher net carbs per listed portion. The category is based only on calculated net carbs for the listed portion: 5 g or less, more than 5 g to 10 g, or more than 10 g. Your total intake, preparation, and clinical context can change how a food fits your own plan.

Nutrient	Per listed portion: 1 medium or regular slice (59 g)	Per 100 g
Energy	155 kcal	263 kcal
Protein	5.4 g	9.2 g
Total fat	0.7 g	1.1 g
Saturated fat	0 g	0 g
Total carbohydrate	31.9 g	54 g
Dietary fiber	2.7 g	4.6 g
Calculated net carbs	29.1 g	49.4 g
Total sugars	0 g	0 g
Sodium	243.1 mg	412 mg
Potassium	105.6 mg	179 mg

The table keeps the USDA basis separate from the selected portion.

1. Food formBread, French or Vienna, whole wheat, toasted
2. USDA per-100 g basis49.4 g calculated net carbs
3. Selected source portion29.1 g calculated net carbs
4. Calculation boundaryPortion value is calculated from the cited 100 g record and portion weight

Explore this food category

Compare this form and portion with other records in grains, starches & baked foods. The category hub explains why forms, preparation, and portions should not be treated as interchangeable.

For meal-level context, use the low-carb substitutes.

How the calculation works

Calculated net carbs = total carbohydrate − dietary fiber. For this USDA record, that is 54 g − 4.6 g = 49.4 g per 100 g. Net carbs is a planning convention used on this site; it is not a separate USDA nutrient field or a regulatory nutrition-label value. This calculation does not automatically subtract sugar alcohols.

For the underlying approach and its limitations, see how net carbs are explained and the net-carb calculator.

Food record and source

• USDA food description: Bread, French or Vienna, whole wheat, toasted
• FoodData Central ID: FDC ID 2707729
• Dataset: Survey (FNDDS) FNDDS 2021-2023 (2024-10-31)
• Record publication date: 10/31/2024
• Selected portion: 1 medium or regular slice (59 g)

The nutrition values are reported by the USDA per 100 g. The per-portion column above is calculated from that value and the USDA portion weight; no household measure was invented for this page.

1. USDA FoodData Central, Survey (FNDDS) FNDDS 2021-2023 (2024-10-31), FDC ID 2707729. https://fdc.nal.usda.gov/food-search/?query=2707729, https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_survey_food_json_2024-10-31.zip

Compare related foods

• Bread, French or Vienna, whole wheat — Compare another form of french or vienna whole wheat bread.
• Bread, pita, whole wheat — Compare another food in the bread or wrap group.
• Bagel — Compare another food in the bread or wrap group.

Browse all Food Database entries or start with the keto food list for practical meal-planning context.

Frequently Asked Questions

Can toasted French or Vienna whole-wheat bread fit a keto diet?

Toasted French or Vienna whole-wheat bread usually does not fit a keto diet. In this form, 1 medium or regular slice (59 g) provides 29.1 g calculated net carbs.

How many net carbs are in Bread, French or Vienna, whole wheat, toasted?

The listed 1 medium or regular slice (59 g) has 29.1 g calculated net carbs. Per 100 g, the record has 49.4 g calculated net carbs.

How are net carbs calculated for Bread, French or Vienna, whole wheat, toasted?

247-Keto calculates net carbs as total carbohydrate minus dietary fiber, capped at zero. For this record, that is 54 g total carbohydrate minus 4.6 g fiber per 100 g. Sugar alcohols are not subtracted by this calculation.

Where do these Bread, French or Vienna, whole wheat, toasted nutrition facts come from?

The values come from USDA FoodData Central's Survey (FNDDS) FNDDS 2021-2023 (2024-10-31) release, FDC ID 2707729. The page preserves the listed food description and portion weight so the comparison is traceable.

Article history

1. September 11, 2026Updated after final factual and editorial review
2. August 24, 2026First published