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Last updated: Aug 9, 2026

Burger 21

Add Beef Patty

Burger Add-OnsPopular

Burger 21 Add Beef Patty is fat-leaning, with about 72% of macro calories from fat. Each serving has 427 calories, 29g protein, 0g carbs, and 33g fat, making it a stronger fit for high-protein restaurant planning.

1 Serving

Serving Size

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427

Calories

Per serving

29 g

Protein

0 g

Carbs

33 g

Fat

Nutrition Facts

Amount per serving

Calories427 kcal

% Daily Value*

Total Fat 33 g42%

Saturated Fat 13 g65%

Trans Fat 0 g—

Cholesterol 0 mg0%

Sodium 113 mg5%

Total Carbohydrate 0 g0%

Dietary Fiber 0 g0%

Total Sugars 0 g—

Protein 29 g58%

Vitamin A—

Vitamin C—

Vitamin D—

Calcium—

Iron—

Potassium—

Caffeine—

* The % Daily Value tells you how much a nutrient in a serving contributes to a daily diet.

Nutrition Breakdown

427

kcal

Protein29 g (28%)

Carbs0 g (0%)

Fat33 g (72%)

Estimated calorie contribution using 4 kcal/g for protein and carbohydrates and 9 kcal/g for fat.

Meal Planning Insights

Protein density6.8/10

28% of macro calories come from protein.

Satiety index10/10

Estimated from protein, fiber, calories, and fat balance.

Activity estimate107 min walk

About 43 minutes of running for these calories.

Key Nutrients

Protein 29 g58%

Fiber 0 g0%

Sodium 113 mg5%

Sugars 0 g—

Saturated Fat 13 g65%

How we calculate these values

Diet Compatibility

High protein6.8/10 protein density from 29g protein and 427 calories.Yes

Lower carb0g carbs per serving.Yes

Low fat33g total fat per serving.No

High sugar0g total sugars per serving.No

High sodium113mg sodium per serving.No

Vegetarian source flagNo vegetarian flag is published for this item.Not flagged

Similar Items in Burger Add-Ons

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Add Avocado Slices42 kcal · 0.6 g protein Add Bacon68 kcal · 4.5 g protein Add Fried Egg94 kcal · 6 g protein

Compare with other items

Select up to 3 items to compare calories, protein, sodium, and macros.

Quick comparisons

Add Beef Patty has 294 fewer calories than 101 Burger and 6g less protein. Compare

Add Beef Patty has 579 fewer calories than 101 Dog Combo and 1g more protein. Compare

101 Burger721 kcal · 35 g protein101 Dog Combo1,006 kcal · 28 g protein21 Sauce70 kcal · 0 g proteinAdd Avocado Slices42 kcal · 0.6 g proteinAdd Bacon68 kcal · 4.5 g proteinAdd Black Bean Patty to Salad283 kcal · 17 g protein

Compare with 101 Burger

Add Beef Patty Compared With Nearby Items

Compared with Add Fried Egg, another Burger Add-Ons item at Burger 21, Add Beef Patty has 333 more calories than it and 23g more protein than it. That makes this page useful for deciding between nearby menu choices, not just reading a raw nutrition label.

Data Source and Methodology

Nutrition values for Add Beef Patty are maintained in Nutrimetry from restaurant-published menu data and were last checked on Aug 9, 2026. Macro percentages use 4 calories per gram for protein and carbohydrates and 9 calories per gram for fat.

Read the data methodology

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