Sonic Jr Burger: nutrition and allergens
The Jr Burger at Sonic has 270 calories, 14 g fat, 24 g carbohydrate, 11 g protein and 580 mg sodium, according to Sonic’s nutrition information.
Nutrition facts
| Calories | 270 |
|---|---|
| Total fat (g) | 14 18% |
| Saturated fat (g) | 3.5 18% |
| Trans fat (g) | 0 |
| Cholesterol (mg) | 20 7% |
| Sodium (mg) | 580 25% |
| Total carbohydrate (g) | 24 9% |
| Dietary fiber (g) | 1 4% |
| Total sugars (g) | 6 |
| Protein (g) | 11 22% |
Percentages are the share of the FDA Daily Value for adults and children 4 and over, worked out from Sonic’s published amounts (how % Daily Value works). A dash means Sonic does not publish that value for this item. Not published for this item: added sugars.
Using the FDA’s rule of thumb that 5% of the Daily Value or less per serving is low and 20% or more is high, one serving is high in sodium (25%) and protein (22%) and is low in dietary fiber. Add it up with other items in the Sonic nutrition calculator.
Allergens
According to Sonic, the Jr Burger contains wheat, soy and gluten. It may also contain sesame through shared equipment or preparation.
| Milk | Not listed |
|---|---|
| Egg | Not listed |
| Fish | Not listed |
| Crustacean shellfish | Not listed |
| Tree nuts | Not listed |
| Peanuts | Not listed |
| Wheat | Contains |
| Soy | Contains |
| Sesame | May contain |
| Gluten | Contains |
Sonic relies on its suppliers for allergen information and shares cooking and preparation areas, so it says it cannot rule out cross-contact or promise that any item is free of an allergen, and no item is certified gluten-free, vegetarian or vegan. Blended drinks and frozen desserts share tools, fried foods share fryers, and grilled items share the grill. Buns, Texas Toast, eggs, grilled onions and grilled peppers are cooked with a bun oil that contains soy. Some breads come from local bakeries, so ingredients and allergens such as sesame can differ by restaurant. Tell your carhop about any food allergy before ordering. Items marked as fried carry a risk of cross-contact with all allergens.
Other items in Wacky Pack! Kids Meals at Sonic
By calories, the Jr Burger ranks 3 of 4 in Sonic’s Wacky Pack! Kids Meals section, from lowest to highest.
| Item | Calories |
|---|---|
| Tree Top Apple Sauce | 45 |
| 1% White Milk | 110 |
| Jr Burger | 270 |
| Jr Cheeseburger | 290 |
Nutrition for all 4 items in Wacky Pack! Kids Meals at Sonic
Browse the Sonic menu by goal: high-protein items · low-calorie items
Hamburgers at other chains
Sonic is one of 8 chains on this site that sell hamburgers. Of the 14 at other chains, 5 have fewer calories and 9 have the same or more than the Jr Burger, comparing each at its first listed size; portions differ, so check the serving on each item’s page.
| Item | Calories |
|---|---|
| Wendy's Jr. Hamburger | 230 |
| Wendy's Kids' Hamburger | 230 |
| McDonald’s Hamburger | 250 |
| Burger King Hamburger | 260 |
| Burger King Kid's Hamburger | 260 |
| Whataburger Justaburger | 300 |
| Whataburger Jr. | 310 |
| Dairy Queen HamburgerSingle | 320 |
Compare all hamburgers side by side (15 items at 8 chains)
Sources
- 1 Sonic, Sonic Nutritional Information brochure (national) Covers nutrition and menu · Summer 2026 · Checked 8 Oct 2026
- 2 Sonic, Sonic Allergen Information guide Covers allergens · National Summer 2026 Allergen Guide · Checked 8 Oct 2026
Spotted a value that differs from the chain’s current information? Report it