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Last updated: Aug 9, 2026

Burger 21

Add Avocado Slices

Burger Add-OnsPopular

Burger 21 Add Avocado Slices is fat-leaning, with about 78% of macro calories from fat. Each serving has 42 calories, 0.6g protein, 2g carbs, and 4g fat, making it a lighter restaurant option to compare with larger meals.

1 Serving

Serving Size

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Calories

Per serving

0.6 g

Protein

2 g

Carbs

4 g

Fat

Nutrition Facts

Amount per serving

Calories42 kcal

% Daily Value*

Total Fat 4 g5%

Saturated Fat 1 g5%

Trans Fat 0 g—

Cholesterol 0 mg0%

Sodium 2 mg0%

Total Carbohydrate 2 g1%

Dietary Fiber 2 g7%

Total Sugars 0 g—

Protein 0.6 g1%

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

kcal

Protein0.6 g (5%)

Carbs2 g (17%)

Fat4 g (78%)

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

Meal Planning Insights

Protein density1.4/10

5% of macro calories come from protein.

Satiety index4.3/10

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

Activity estimate11 min walk

About 4 minutes of running for these calories.

Key Nutrients

Protein 0.6 g1%

Fiber 2 g7%

Sodium 2 mg0%

Sugars 0 g—

Saturated Fat 1 g5%

How we calculate these values

Diet Compatibility

High protein1.4/10 protein density from 0.6g protein and 42 calories.No

Lower carb2g carbs per serving.Yes

Low fat4g total fat per serving.No

High sugar0g total sugars per serving.No

High sodium2mg 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 Bacon68 kcal · 4.5 g protein Add Beef Patty427 kcal · 29 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 Avocado Slices has 679 fewer calories than 101 Burger and 34.4g less protein. Compare

Add Avocado Slices has 964 fewer calories than 101 Dog Combo and 27.4g less protein. Compare

101 Burger721 kcal · 35 g protein101 Dog Combo1,006 kcal · 28 g protein21 Sauce70 kcal · 0 g proteinAdd Bacon68 kcal · 4.5 g proteinAdd Beef Patty427 kcal · 29 g proteinAdd Black Bean Patty to Salad283 kcal · 17 g protein

Compare with 101 Burger

Add Avocado Slices Compared With Nearby Items

Compared with Add Bacon, another Burger Add-Ons item at Burger 21, Add Avocado Slices has 26 fewer calories than it and 3.9g less 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 Avocado Slices 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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