Burger King Flame-Grilled Whopper
Quick answer
A medium portion of Burger King Flame-Grilled Whopper (280 g) contains 657 kcal, with 46.5 g of net carbohydrates and 28 g of protein. Its glycemic index is 66 (Medium) for how fast it raises blood sugar, while its glycemic load per portion is 30.7 (High) for its actual effect.
- Carbs49 g29.3%
- Protein28 g16.8%
- Fat40 g53.9%
- Fibre2.5 g
Percentages of total energy (calories)
Burger King’s iconic flame-grilled burger with beef, tomato, lettuce and mayonnaise: a filling, protein-rich fast-food meal that calls for awareness of its high calories and fat.
💡 Smart Nutritional Guidance
Consumption advice
Ordering it “without mayo” saves about 150 kcal and 16 g of fat.
Best preparation methods
Leaving out the top half of the bun cuts the fast carbohydrates by roughly 40%.
Important Nutritional Note
Fast-food nutrition values are approximate and can vary by country, outlet and local preparation; WiBo Health is not affiliated with any of these brands.
Nutrition facts
| Nutrient | Per 100 g | Per typical portion (280 g) |
|---|---|---|
| Calories | 234.6 kcal | 656.9 kcal |
| Protein | 10 g | 28 g |
| Carbohydrate | 17.5 g | 49 g |
| Available carbohydrate | 16.6 g | 46.5 g |
| Fat | 14.3 g | 40 g |
| Dietary fibre | 0.9 g | 2.5 g |
The typical portion is approximate, for comparison purposes.
Comparison & smarter alternatives
Among the foods in Fast food with a glycemic index (29), it ranks 27 (lowest first).
Smart alternatives from the same family:
Frequently asked questions
Is Burger King Flame-Grilled Whopper good for weight loss?
It can fit a balanced plan with portion control: a 280 g portion gives 657 kcal, and what matters most is your total daily intake and the rest of the meal.
How does Burger King Flame-Grilled Whopper affect blood sugar?
Its glycemic index is 66 (Medium), a clinically reviewed estimate rather than a laboratory measurement. A typical 280 g portion has a glycemic load of 30.7 (High), so it is best to reduce or split the portion and combine it with protein and fibre.
What is the nutritional value of a typical portion of Burger King Flame-Grilled Whopper?
A typical 280 g portion of Burger King Flame-Grilled Whopper provides about 657 kcal, 28 g protein, 49 g carbohydrate, 40 g fat and 2.5 g fibre.
Read also
- HbA1c & Insulin Resistance: Comprehensive Clinical GuideArticle
- Prediabetes: How to Stop the Train and Lower Your HbA1cGuide
References & Scientific Sources
- The glycemic index of this food is a clinically reviewed estimate by the WiBo Health medical team, not a laboratory measurement from the International GI Tables (Atkinson 2021). GI bands (low ≤ 55 · medium 56–69 · high ≥ 70) follow: ISO 26642:2010. Food products — Determination of the glycaemic index (GI) and recommendation for food classification. International Organization for Standardization; 2010. www.iso.org/standard/43633.html
- Definition of available carbohydrate and glycemic load: FAO/WHO. Carbohydrates in human nutrition: report of a joint FAO/WHO expert consultation. FAO Food and Nutrition Paper 66. Rome; 1998. www.fao.org/4/w8079e/w8079e00.htm
Reviewed by the WiBo Health medical team · Last reviewed 13 October 2026
Disclaimer: This guidance is for nutritional lifestyle orientation and does not constitute a diagnostic medical device under EU Regulation MDR 2017/745.