Zaxbys Diet Coke: Coca-Cola fountain drink. The official Zaxbys guide lists 0 calories across 4 options, and it lists none of the nine major allergens. Below are the full nutrition facts, allergens and how it compares with similar items.
Quick answers
- How many calories are in the Diet Coke?
- 0 calories, per the official Zaxbys guide.
- What allergens does it list?
- None of the major allergens, MSG or gluten are marked, but cross-contact is possible.
What it is
Coca-Cola fountain drink.
Zaxbys Diet Coke sizes and options
Diet Coke comes in 4 options: Kidz, Small, Medium and Large. Calories run from 0 (Kidz) to 0 (Kidz). The full nutrition facts for every option are in the table below.
| Option | Calories | Protein | Sodium | Allergens |
|---|---|---|---|---|
| Kidz | 0 | 0 g | 50 mg | None listed |
| Small | 0 | 0 g | 80 mg | None listed |
| Medium | 0 | 0 g | 120 mg | None listed |
| Large | 0 | 0 g | 160 mg | None listed |
Full nutrition facts
| Option | Calories | Total fat | Sat. fat | Trans fat | Cholesterol | Sodium | Carbs | Fiber | Sugars | Protein |
|---|---|---|---|---|---|---|---|---|---|---|
| Kidz | 0 | 0 g | 0 g | 0 g | 0 mg | 50 mg | 0 g | 0 g | 0 g | 0 g |
| Small | 0 | 0 g | 0 g | 0 g | 0 mg | 80 mg | 0 g | 0 g | 0 g | 0 g |
| Medium | 0 | 0 g | 0 g | 0 g | 0 mg | 120 mg | 0 g | 0 g | 0 g | 0 g |
| Large | 0 | 0 g | 0 g | 0 g | 0 mg | 160 mg | 0 g | 0 g | 0 g | 0 g |
Nutrition at a glance
For the lightest option (Kidz), the official guide lists:
- 0 calories, 0 g fat, 0 g carbs (0 g sugar)
- 50 mg sodium, about 2% of the 2,300 mg FDA daily value
Every size is listed at 0 calories and 0 g sugar, so it’s an easy swap for regular soda or sweet tea.
That’s about 100% lighter than the typical item in this category (about 160 calories for the smallest serving).
Allergens
The official guide marks none of the nine major allergens, MSG or gluten for Diet Coke. That doesn’t make it allergen-free: Zaxbys kitchens use shared equipment, so cross-contact is possible.
How it compares
Here’s Diet Coke next to 3 similar items, so you can see where it sits.
| Item | Calories | Options | Allergens | Example price |
|---|---|---|---|---|
| Diet Coke | 0 | 4 | None listed | — |
| Unsweet Tea | 0 | 5 | None listed | — |
| Coca-Cola Zero Sugar | 0 | 4 | None listed | — |
| Apple Juice 6 oz | 35 | 1 | None listed | — |
Good to know
- Prices vary by restaurant. Check the official app or zaxbys.com for the price at your store.
Frequently asked questions
How many calories are in the Zaxbys Diet Coke?
0 calories, per the official Zaxbys guide. That’s about 100% lighter than the typical item in this category (about 160 calories for the smallest serving).
Does the Zaxbys Diet Coke contain milk?
The official guide doesn’t list milk. Shared equipment means cross-contact is still possible, so tell the staff about a milk allergy.
Is the Diet Coke gluten-free?
The official guide doesn’t list wheat or gluten, but Zaxbys doesn’t call any item gluten-free, and fryers and prep areas are shared. See our gluten-free guide.
How much does the Diet Coke cost?
Prices vary by restaurant. Check the official app or zaxbys.com for the price at your store.
Where this information comes from. All nutrition and allergen information on this site is taken from the official Zaxbys Nutrition & Allergen Guide (revised November 2025), published on zaxbys.com. We have not added anything of our own or changed the figures. Recipes, suppliers and menus change, so please verify with Zaxbys or your restaurant before you rely on it, especially if you have a food allergy. Verify before use.