Five Guys is a useful keto stop when you order beef patties or a hot dog without the bun and count the toppings. Mustard, pickles, cheese and bacon can fit without turning lunch into an accounting emergency. Fries and the shake base are the obvious tradeoffs to skip.
All figures below come from the Five Guys US Nutrition & Allergen Guide, retrieved October 24, 2026. The document is dated September 1, 2026. Values are as published by the chain for individual components, not assembled burgers.
Count patties and toppings separately
I’d start with beef, mustard and pickles, then decide whether cheese and bacon earn their place. You don’t need to add every available fat just because the bun is gone. Mayonnaise still counts toward the size of lunch.
| Item and published serving | Calories | Total carbs | Fiber | Net carbs | Protein |
|---|---|---|---|---|---|
| Hamburger Patty, 65g | 302 | 0g | 0g | 0g | 16g |
| Hot Dog, Supplier H, 90g | 280 | 1g | 0g | 1g | 11g |
| Bacon, Supplier S, 2 pieces | 70 | 0g | 0g | 0g | 5g |
| Cheese, Supplier S, 1 slice | 70 | 1g | 0g | 1g | 3g |
| Grilled Mushrooms, 21g | 6 | 1g | 0g | 1g | 0g |
These aren’t finished burger totals. Tell the cashier how many patties and cheese slices you want, and log each one. Two Hamburger Patties alone give 604 calories and 32g protein, with 0g carbs listed before toppings.
The Five Guys guide separates Mini Patty from Hamburger Patty. Don’t substitute the smaller component’s figures just because your order has a name containing Little. The order table spells out quantities so you can match what actually arrives.
Supplier differences are real
The same ingredient can have different published values. The guide lists bacon from Supplier S at 70 calories and 5g protein per two pieces, versus 73 calories and 6g protein for Supplier D. Both list 0g carbs.
Hot Dog Supplier H lists 280 calories; Supplier K lists 260. Both publish 1g carbs and 11g protein. Mayonnaise is 103 calories per listed serving from Supplier S or 111 from Supplier K, both at 0g carbs.
Cheese Supplier S lists 1g carbs and 3g protein per slice. Supplier K lists less than 1g carbs and 4g protein. Less than a gram isn’t the same thing as zero, and the guide doesn’t tell us which supplier your location uses.
The examples below use Supplier S bacon, cheese and mayo, Supplier H hot dog, and Supplier M pickles consistently. They’re component calculations, not a promise that every location serves those exact supplier versions.
Toppings, sides and the shake problem
| Item and published serving | Calories | Total carbs | Fiber | Net carbs | Protein |
|---|---|---|---|---|---|
| Mustard, 5g | 0 | 0g | 0g | 0g | 0g |
| Pickles, Supplier M, 28g | 0 | 0g | 0g | 0g | 0g |
| Mayonnaise, Supplier S, 14g | 103 | 0g | 0g | 0g | 0g |
| Ketchup, 17g | 30 | 5g | 0g | 5g | 0g |
| BBQ Sauce, 28g | 49 | 15g | <1g | Not exact | <1g |
| Bulk Peanuts, listed 1 oz serving | 170 | 5g | 3g | 2g | 7g |
| Hamburger Bun, 77g | 240 | 35g | 1g | 34g | 7g |
| Little Five Guys Style Fries, 227g | 526 | 72g | 8g | 64g | 8g |
| Vanilla Shake Base, 315g | 524 | 65g | 0g | 65g | 10g |
Pickles fit easily into these orders. Ketchup and BBQ sauce take more room: 5g and 15g total carbs per listed serving, respectively. Use the published serving rather than assuming a squirt is an entire portion or vice versa.
The lettuce entry lists 1g total carbs and less than 1g fiber per 30g. Ask for a container to follow the component examples exactly, or count lettuce separately if you choose a wrap.
Peanuts can be a measured side: 5g total carbs minus 3g fiber gives 2g net carbs for the listed 1 oz serving. The guide also shows the serving weight as 30g. A handful isn’t a unit on this table.
Complete orders, counted
Each row includes only the listed components, with no bun unless named. No extra lettuce, sauce, drink or topping is included. Confirm the restaurant can serve your requested combination and adjust for the supplier used locally.
| Order | Calories | Total carbs | Fiber | Net carbs | Protein |
|---|---|---|---|---|---|
| 1 patty + mustard + pickles, no bun | 302 | 0g | 0g | 0g | 16g |
| 1 patty + 1 cheese slice + mushrooms + mustard, no bun | 378 | 2g | 0g | 2g | 19g |
| 2 patties + 2 cheese slices + bacon + mayo + pickles, no bun | 917 | 2g | 0g | 2g | 43g |
| Hot dog + 1 cheese slice + bacon + mustard, no bun | 420 | 2g | 0g | 2g | 19g |
| 1 patty + mushrooms + 1 oz peanuts, no bun | 478 | 6g | 3g | 3g | 23g |
| Comparison: 2 patties + bun + Little fries | 1370 | 107g | 9g | 98g | 47g |
| Comparison: 1 patty, no bun + Vanilla Shake Base | 826 | 65g | 0g | 65g | 26g |
The last two rows show why removing the bun can’t rescue every meal. Little fries add 72g total carbs and 8g fiber. The Vanilla Shake Base adds 65g carbs before any mix-ins, so bacon in a shake is still bacon in a high-carb shake.
How to order
- Request no bun and a container, or ask for lettuce and count it separately.
- Specify patties, cheese slices and bacon portions. Check those quantities when the food arrives.
- Pick mustard and pickles for a simple starting point. Add other toppings deliberately.
- Skip fries and shakes, including shakes with otherwise low-carb mix-ins.
- If you want peanuts, measure the portion you eat.
- Use the location’s supplier information if you need a tighter calorie or protein total.
I’d keep the order focused on patties, cheese and the toppings you actually want. A short order is easier to check before you leave the counter.
For more chains, see our keto fast food guide and our comparison of high-protein, low-carb fast food orders.