Sonic Cheeseburger with Ketchup & Mayo: nutrition and allergens
The Sonic Cheeseburger with Ketchup & Mayo at Sonic has 700 calories, 41 g fat, 52 g carbohydrate, 30 g protein and 1,360 mg sodium, according to Sonic’s nutrition information.
Nutrition facts
| Calories | 700 |
|---|---|
| Total fat (g) | 41 53% |
| Saturated fat (g) | 11 55% |
| Trans fat (g) | 0 |
| Cholesterol (mg) | 65 22% |
| Sodium (mg) | 1,360 59% |
| Total carbohydrate (g) | 52 19% |
| Dietary fiber (g) | 2 7% |
| Total sugars (g) | 12 |
| Protein (g) | 30 60% |
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 protein (60%), sodium (59%), saturated fat (55%), fat (53%) and cholesterol (22%). Add it up with other items in the Sonic nutrition calculator.
Allergens
According to Sonic, the Sonic Cheeseburger with Ketchup & Mayo contains milk, egg, wheat, soy and gluten. It may also contain sesame through shared equipment or preparation.
| Milk | Contains |
|---|---|
| Egg | Contains |
| 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 Burgers at Sonic
By calories, the Sonic Cheeseburger with Ketchup & Mayo ranks 7 of 10 in Sonic’s Burgers section, from lowest to highest.
| Item | Calories |
|---|---|
| Jr Double Cheeseburger | 390 |
| Jr Bacon Cheeseburger | 400 |
| Original Sonic SmasherDouble | 600 |
| All-American Sonic SmasherDouble | 610 |
| Hatch Green Chile Cheeseburger with Mustard | 650 |
| All-American Bacon Sonic SmasherDouble | 670 |
| Sonic Cheeseburger with Ketchup & Mayo | 700 |
| Deluxe Teriyaki Sonic SmasherDouble | 760 |
| Super Sonic Jalapeño Double Cheeseburger with Mustard | 970 |
| Super Sonic Double Cheeseburger with Ketchup & Mayo | 1,040 |
Nutrition for all 10 items in Burgers at Sonic
Browse the Sonic menu by goal: high-protein items · low-calorie items
Cheeseburgers at other chains
Sonic is one of 7 chains on this site that sell cheeseburgers. Of the 14 at other chains, 13 have fewer calories and 1 has the same or more than the Sonic Cheeseburger with Ketchup & Mayo, comparing each at its first listed size; portions differ, so check the serving on each item’s page.
| Item | Calories |
|---|---|
| Wendy's Jr. Cheeseburger | 270 |
| Wendy's Kids' Cheeseburger | 270 |
| McDonald’s Cheeseburger | 300 |
| Burger King Cheeseburger | 300 |
| Burger King Kid's Cheeseburger | 300 |
| Wendy's Jr. Cheeseburger Deluxe | 330 |
| Dairy Queen Original CheeseburgerSingle | 370 |
| Jack in the Box Cheeseburger | 370 |
Compare all cheeseburgers side by side (15 items at 7 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
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