Sonic Peanut Butter Shake: nutrition and allergens
Sonic lists the Peanut Butter Shake in 4 sizes, from 440 calories (Mini) to 1,240 calories (Large). The Mini has 23 g fat, 51 g carbohydrate, 9 g protein and 330 mg sodium.
Nutrition facts
| Per serving | Mini | Small | Medium | Large |
|---|---|---|---|---|
| Calories | 440 | 630 | 840 | 1,240 |
| Total fat (g) | 23 29% | 30 38% | 43 55% | 63 81% |
| Saturated fat (g) | 13 65% | 17 85% | 22 110% | 30 150% |
| Trans fat (g) | 0 | 0 | 0 | 0 |
| Cholesterol (mg) | 45 15% | 80 27% | 100 33% | 155 52% |
| Sodium (mg) | 330 14% | 530 23% | 700 30% | 1,070 47% |
| Total carbohydrate (g) | 51 19% | 83 30% | 103 37% | 154 56% |
| Dietary fiber (g) | 1 4% | 1 4% | 2 7% | 3 11% |
| Total sugars (g) | 43 | 70 | 86 | 128 |
| Protein (g) | 9 18% | 14 28% | 19 38% | 29 58% |
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 size. 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, the Mini size is high in saturated fat (65%) and fat (29%) and is low in dietary fiber. Add it up with other items in the Sonic nutrition calculator.
Allergens
According to Sonic, the Peanut Butter Shake contains milk, peanuts and soy.
| Milk | Contains |
|---|---|
| Egg | Not listed |
| Fish | Not listed |
| Crustacean shellfish | Not listed |
| Tree nuts | Not listed |
| Peanuts | Contains |
| Wheat | Not listed |
| Soy | Contains |
| Sesame | Not listed |
| Gluten | Not listed |
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 Hand-Mixed Classic Shakes at Sonic
By calories (Mini), the Peanut Butter Shake ranks 7 of 7 in Sonic’s Hand-Mixed Classic Shakes section, from lowest to highest.
| Item | Calories |
|---|---|
| Strawberry ShakeMini | 360 |
| Chocolate ShakeMini | 370 |
| Vanilla ShakeMini | 370 |
| Caramel ShakeMini | 380 |
| Banana ShakeMini | 390 |
| Hot Fudge ShakeMini | 410 |
| Peanut Butter ShakeMini | 440 |
Nutrition for all 7 items in Hand-Mixed Classic Shakes at Sonic
Browse the Sonic menu by goal: high-protein items · low-calorie items
Milkshakes at other chains
Sonic is one of 9 chains on this site that sell milkshakes. Of the 37 at other chains, 2 have fewer calories and 35 have the same or more than the Peanut Butter Shake (Mini), comparing each at its first listed size; portions differ, so check the serving on each item’s page.
| Item | Calories |
|---|---|
| Whataburger Vanilla ShakeSmall | 410 |
| Whataburger Dr Pepper ShakeSmall | 430 |
| Whataburger Chocolate ShakeSmall | 440 |
| Whataburger Strawberry ShakeSmall | 450 |
| McDonald’s Strawberry ShakeSmall | 470 |
| Dairy Queen Banana ShakeSmall | 470 |
| McDonald’s Vanilla ShakeSmall | 480 |
| Arby's Vanilla ShakeSmall | 480 |
Compare all milkshakes side by side (38 items at 9 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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