Keto Restaurant Guide
Keto at Arby's
Arby's is a roast beef shop, and the roast beef itself is almost carb-free. Arby's publishes its 4-inch sesame seed bun separately at 36g carbs and 2g fiber, and its ingredient list shows the Classic, Double and Half Pound Roast Beef are just roast beef on that bun. Take the bun away and the Half Pound Roast Beef is 2g carbs.
Ask for the roast beef in a bowl or a box with no bun, then add a slice of cheddar (0g carbs) and bacon (1g). Horsey Sauce is 3g carbs a packet. The Beef 'n Cheddar, cheesesteaks and chicken sandwiches use rolls Arby's does not list on their own, so there is no reliable bunless figure for them.
By MeKeto Editorial · Last updated October 2026
Our go-to keto order
Half Pound Roast Beef, no bun, with cheddar and bacon
3g net carbs
3g carbs, 0g fiber
Arby's published Half Pound Roast Beef (38g carbs, 2g fiber) minus the published 4-inch sesame seed bun (36g carbs, 2g fiber), plus a mild cheddar slice (0g carbs) and 3 half strips of bacon (1g carbs, 0g fiber). About 550 calories and 51g protein.
Best keto options
1g carbs, 0g fiber
Published Classic Roast Beef (37g carbs, 2g fiber) minus the published sesame seed bun (36g, 2g).
2g carbs, 0g fiber
Published Double Roast Beef (38g carbs, 2g fiber) minus the published sesame seed bun (36g, 2g).
2g carbs, 0g fiber
The most meat for the fewest carbs. Published sandwich (38g carbs, 2g fiber) minus the bun (36g, 2g).
2g carbs, 1g fiber
A limited-time item at 140 calories and 20g protein. The 9-piece is 3g carbs and 2g fiber.
0g carbs, 0g fiber
Add it to bunless roast beef. Processed Swiss is also 0g carbs.
1g carbs, 0g fiber
Adds 70 calories of fat and flavor for 1g carbs.
3g carbs, 0g fiber
Creamy horseradish sauce, 3g carbs per packet. Arby's Sauce is also 3g. Ranch dipping sauce is 1g.
| Item | Carbs | Fiber | Net | Why / how |
|---|---|---|---|---|
| Classic Roast Beef, no bun | 1g | 0g | 1g | Published Classic Roast Beef (37g carbs, 2g fiber) minus the published sesame seed bun (36g, 2g). |
| Double Roast Beef, no bun | 2g | 0g | 2g | Published Double Roast Beef (38g carbs, 2g fiber) minus the published sesame seed bun (36g, 2g). |
| Half Pound Roast Beef, no bun | 2g | 0g | 2g | The most meat for the fewest carbs. Published sandwich (38g carbs, 2g fiber) minus the bun (36g, 2g). |
| Steak Nuggets (5) | 2g | 1g | 1g | A limited-time item at 140 calories and 20g protein. The 9-piece is 3g carbs and 2g fiber. |
| Cheddar cheese slice | 0g | 0g | 0g | Add it to bunless roast beef. Processed Swiss is also 0g carbs. |
| Bacon (3 half strips) | 1g | 0g | 1g | Adds 70 calories of fat and flavor for 1g carbs. |
| Horsey Sauce | 3g | 0g | 3g | Creamy horseradish sauce, 3g carbs per packet. Arby's Sauce is also 3g. Ranch dipping sauce is 1g. |
Order with care
45g carbs, 2g fiber
Served on an onion roll that Arby's does not list separately, so there is no published bunless value. Order roast beef with a cheddar slice instead.
59g carbs, 4g fiber
Breaded chicken on a bun. Every crispy chicken sandwich is 59 to 61g carbs.
28g carbs, 2g fiber
The breading carries the carbs. Ask for steak nuggets or roast beef instead.
49g carbs, 5g fiber
Even a small order is 29g carbs.
31g carbs, 2g fiber
Breaded and fried, and the Bronco Berry Sauce adds another 15g carbs.
16g carbs, 0g fiber
Almost all sugar. Red Ranch Sauce is 5g carbs.
| Item | Carbs | Fiber | Net | What to do |
|---|---|---|---|---|
| Classic Beef 'n Cheddar | 45g | 2g | 43g | Served on an onion roll that Arby's does not list separately, so there is no published bunless value. Order roast beef with a cheddar slice instead. |
| Crispy Chicken sandwich | 59g | 4g | 55g | Breaded chicken on a bun. Every crispy chicken sandwich is 59 to 61g carbs. |
| Chicken Tenders (3) | 28g | 2g | 26g | The breading carries the carbs. Ask for steak nuggets or roast beef instead. |
| Curly Fries (medium) | 49g | 5g | 44g | Even a small order is 29g carbs. |
| Jalapeno Bites (5) | 31g | 2g | 29g | Breaded and fried, and the Bronco Berry Sauce adds another 15g carbs. |
| BBQ dipping sauce | 16g | 0g | 16g | Almost all sugar. Red Ranch Sauce is 5g carbs. |
How to order keto at Arby's
- Say "Half Pound Roast Beef, no bun, in a bowl." The roast beef sandwiches are the only ones Arby's lists as just meat and a bun.
- Add a slice of cheddar or Swiss (0g carbs) and bacon (1g) for fat.
- Use Horsey Sauce or Arby's Sauce (3g carbs each) sparingly, or ranch (1g). Skip BBQ (16g) and Bronco Berry (15g).
- Skip the curly fries, crinkle fries, potato cakes and mozzarella sticks. There is no low-carb side.
- Drink unsweetened brewed tea or Diet Coke.
Net carbs are total carbohydrate minus dietary fiber, rounded to the nearest gram, from Arby's's published nutrition information (checked October 2026). For a modified order, such as no bun, we subtract the published values of the part you leave off. Menus and recipes vary by location and change over time, so check current nutrition with Arby's before you order, especially for sauces, dressings, and seasonal items.
Frequently asked questions
Yes. Order the Classic, Double or Half Pound Roast Beef without the bun. Arby's lists the sesame seed bun at 36g carbs, so the bunless roast beef is 1 to 2g carbs.
Yes. Subtracting the published bun from the published sandwiches leaves the Classic Roast Beef at 1g carbs and the Double and Half Pound at 2g, with 0g fiber.
Not as served. It is 45g carbs on an onion roll, and Arby's does not list the roll on its own. Order a bunless roast beef with a cheddar slice for a similar flavor at 1 to 2g carbs.
In moderation. Horsey Sauce is 3g carbs per packet, the same as Arby's Sauce. Ranch dipping sauce is 1g.
No. A medium order is 49g carbs and 5g fiber, and even a small is 29g.
Sources
- Arby's Nutrition & Allergen Information (PDF, October 2026), accessed October 2026.
- Arby's Menu Items and Ingredients (PDF, October 2026), accessed October 2026.
- Arby's Nutrition, accessed October 2026.