At Sonic, a burger without its bun is the practical starting point for a lower-carb entree, and unsweet iced tea is the straightforward drink. Count cheese, chili and sauces instead of assuming every topping is free. Leave mozzarella sticks, tots and regular limeades out of the keto order.
All figures below come from Sonic’s national nutrition brochure, retrieved October 24, 2026; its cover is marked Summer 2026. Values are as published by Sonic, and net carbs are total carbs minus fiber.
Burgers, hot dogs and breakfast
Sonic doesn’t list separate bun or tortilla nutrition or custom-order totals, so removing either lowers carbs without giving us a published figure for the remaining food.
| Standard item, bread included | Calories | Total carbs | Fiber | Net carbs |
|---|---|---|---|---|
| Original Sonic Smasher, double | 600 | 30g | 1g | 29g |
| Jr Double Cheeseburger | 390 | 25g | 2g | 23g |
| Sonic Cheeseburger with ketchup & mayo | 700 | 52g | 2g | 50g |
| Regular Hot Dog | 360 | 31g | 2g | 29g |
| Chili Cheese Coney | 470 | 34g | 2g | 32g |
| Bacon Breakfast Burrito | 470 | 35g | 1g | 34g |
| Ultimate Meat & Cheese Breakfast Burrito | 820 | 47g | 2g | 45g |
I’d ask for a simple burger in a tray and choose toppings deliberately. A no-bun Regular Hot Dog is another possible customization, but chili and cheese still belong in your count. Neither order needs a potato side to become lunch.
At breakfast, ask about serving the Bacon Breakfast Burrito filling in a container. Check what’s in the filling before choosing a bigger burrito; removing its outer wrap doesn’t remove everything else. The table gives the standard items, so none of those numbers should be relabeled as a modified order.
Count the toppings and sauces
| Addition, Sonic’s listed serving | Calories | Total carbs | Fiber | Net carbs | Protein |
|---|---|---|---|---|---|
| Bacon | 60 | 0g | 0g | 0g | 4g |
| American cheese | 70 | 2g | 0g | 2g | 3g |
| Grilled onions | 15 | 1g | 0g | 1g | 0g |
| Hot chili | 60 | 3g | 1g | 2g | 3g |
| Jalapeno | 5 | 1g | 0g | 1g | 0g |
| Mustard | 5 | 0g | 0g | 0g | 0g |
| Ranch | 110 | 1g | 0g | 1g | 0g |
| Buffalo | 60 | 1g | 0g | 1g | 0g |
| Light Mayo | 40 | 3g | 0g | 3g | 0g |
| BBQ | 50 | 11g | 0g | 11g | 0g |
Those are servings, not a promise about the size of a squeeze or handful. Use the named portion when logging an addition. Sonic lists bacon as a serving rather than a slice, so don’t turn that entry into a per-strip figure.
Mustard is my pick when the goal is keeping the count simple. Ranch can fit, but it adds considerably more calories. Light Mayo isn’t carb-free just because it’s mayo, and BBQ is much higher in carbs than mustard or ranch.
Diet limeades still need a size
| Drink | Calories | Total carbs | Fiber | Net carbs |
|---|---|---|---|---|
| Unsweet Iced Tea, medium | 0 | 0g | 0g | 0g |
| Diet Limeade, small | 5 | 0g | 0g | 0g |
| Diet Limeade, medium | 5 | 1g | 0g | 1g |
| Diet Cherry Limeade, small | 10 | 2g | 0g | 2g |
| Diet Cherry Limeade, medium | 15 | 3g | 0g | 3g |
| Diet Cherry Limeade, RT 44 | 15 | 4g | 0g | 4g |
| Cherry Limeade, medium | 240 | 65g | 0g | 65g |
Diet Cherry Limeade is a reasonable counted drink, not an unlimited one. Order it by its full name and size. Regular Cherry Limeade is a different proposition altogether. Adding sweet flavors afterward changes the order again; the word diet doesn’t protect the entire cup.
Complete orders, counted
For exact totals, these are small bacon-and-cheese plates built from listed add-on servings, without a burger patty or hot dog. Ask whether your Sonic can serve the additions separately before relying on them. They’re snack-sized options, rather than substitutes for a full entree.
| Order | Calories | Total carbs | Fiber | Net carbs | Protein |
|---|---|---|---|---|---|
| 2 bacon servings + American cheese + medium unsweet iced tea | 190 | 2g | 0g | 2g | 11g |
| 2 bacon servings + American cheese + hot chili + small Diet Limeade | 255 | 5g | 1g | 4g | 14g |
| 3 bacon servings + American cheese + grilled onions + medium Diet Cherry Limeade | 280 | 6g | 0g | 6g | 15g |
| 2 bacon servings + 2 American cheese servings + jalapeno + medium unsweet iced tea | 265 | 5g | 0g | 5g | 14g |
| Comparison: Original Sonic Smasher, double, with bun + small Groovy Fries | 860 | 58g | 5g | 53g | 37g |
| Comparison: small mozzarella sticks + ranch + medium Cherry Limeade | 720 | 102g | 2g | 100g | 15g |
The comparison with mozzarella sticks is why I wouldn’t use breaded cheese as the low-carb side. The small order alone has 36g total carbs. Small Tots list 30g, and small Onion Rings list 55g. There’s no need to negotiate with the breading. Choose a different order.
How to order
- Choose a burger and request no bun, served in a tray.
- Name each topping you want; count its listed serving separately.
- Pick mustard or another counted sauce and keep extras separate.
- Skip tots, fries, onion rings and mozzarella sticks.
- Order unsweet iced tea or specify the diet limeade’s full name and size.
Compare other drive-thru choices in our keto fast food guide and high-protein, low-carb fast food comparison.