Five Guys on a Diet: How to Order a Burger and Fries Lighter

The leanest realistic Five Guys low calorie order is a Little Hamburger (single patty) piled with free veggie toppings, no cheese, no bacon, no mayo, which lands around 450 to 500 calories. Add a splash of mustard, ketchup, grilled onions, lettuce, tomato, pickles, and jalapenos for flavor at almost zero cost, then either skip the fries or split a Little order with someone. That's the whole playbook. Everything else below is about understanding why the menu is a trap and how to dodge it.

Why Five Guys wrecks a calorie budget by default

Five Guys doesn't do "small." The standard burger is a double, every fry order is overfilled on purpose (they dump an extra scoop in the bag like it's a love language), and everything fries in peanut oil. A regular bacon cheeseburger with a regular fry can push past 1,800 calories before you've touched the drink. That's not a meal, that's a full day for a lot of people cutting.

But the same reason Five Guys is dangerous is the reason it can work: almost everything is built to order, and the toppings are free and unlimited. You control the calories more than you think. The two levers that matter most are patty count and fry portion. Nail those two and you've already won.

Lever 1: Order the "Little" burger (it's the single)

This is the single most important move. At Five Guys, the regular burger is a double patty by default. The "Little" version is the single, and it's a genuinely satisfying burger, not some sad slider.

Here's the rough breakdown of how the builds stack up:

Going from a regular cheeseburger to a Little hamburger saves you roughly 350 calories before you've done anything else. If you want cheese, pay the ~70 calories for one slice and move on. Skipping the second patty saves more than skipping the cheese ever will.

The bunless option

Want to go lower? Ask for your burger "bunless" or in a lettuce wrap. The bun runs about 260 calories, so a lettuce-wrapped Little Hamburger with veggies drops to roughly 300 calories of mostly protein and water. It's messy. Bring napkins and your dignity. But it's a legit low-calorie way to eat here, and it beats most fast-food salads on protein per calorie.

Lever 2: The fries are the real enemy

People blame the burger. The burger is rarely the problem. The fries are the problem.

A Little fry at Five Guys is already around 525 calories. A regular is close to 950. A large is over 1,300. And remember, they overfill every size, so that "little" is closer to what any other chain calls a medium or large. The fries are fried in peanut oil and salted hard, which is exactly why they taste incredible and exactly why they're a calorie bomb.

Your options, in order of discipline:

1. Skip them entirely. Boring advice, biggest payoff. The burger alone is a complete meal.
2. Split a Little fry. Half a Little is ~260 calories and honestly enough to scratch the itch.
3. Order a Little and portion it. Take out what you'll eat, bag the rest, and don't graze on the drive home. This is where it falls apart for most people.

Cajun fries have the same calories as regular fries, just more seasoning, so switching styles won't save you anything. The portion is the only thing that matters.

Lever 3: Toppings are free calories or free flavor, your call

Fifteen-plus toppings are free at Five Guys, and most of the good ones are nearly calorie-free. This is where you build flavor without building a budget problem.

Load these freely (basically free calories):

• Lettuce, tomato, raw or grilled onions, pickles, jalapenos, green peppers
• Mustard, ketchup, hot sauce, A1, relish, vinegar

Go easy on these (they add up fast):

• Mayo (~110 cal per serving, and they are not shy with it)
• Cheese (~70 cal/slice)
• Bacon (~80 cal for two strips)
• BBQ sauce (sugar adds up if you pile it)

Grilled onions and grilled mushrooms are the move. They add real savory depth for almost nothing. If you want the creamy mouthfeel without the mayo calories, a little mustard plus grilled onions gets you surprisingly far.

A complete lighter order, start to finish

Here's what I actually order when I'm tracking:

• Little Cheeseburger, one slice of cheese, no mayo
• Toppings: lettuce, tomato, grilled onions, pickles, jalapenos, mustard, ketchup
• Fries: none, or split a Little with whoever I'm with
• Drink: water, diet soda, or unsweetened iced tea (their regular fountain shakes and sodas are a separate rabbit hole)

That's roughly 550 to 650 calories for a genuinely good burger with around 25 to 30 grams of protein. Add half a Little fry and you're still under 900 for the whole meal, which is reasonable for a treat day. Compare that to the ~1,800 default and you've basically saved yourself a second meal's worth of calories.

Because Five Guys doesn't post per-item calories on the board and the builds are custom, log it as you order. I plug the patty, bun, cheese, and sauces into TrackBiteX separately so the custom build actually matches what I ate instead of guessing at a generic "cheeseburger" entry. Toppings like lettuce and grilled onions you can round to zero and not stress.

How Five Guys compares to other fast food on a cut

Five Guys is pricey in calories, but a well-built Little burger competes fine with other chains if you control the fries. For context from our full menu database, a McDonald's small fry is only 230 calories, which is less than half a Five Guys Little. And if your goal is maximum protein per calorie, grilled chicken usually wins outright.

The takeaway: if you specifically want a burger, a Little at Five Guys is defensible. If you just want to hit calories and protein, a grilled chicken option at Chick-fil-A or a steak bowl at Chipotle (steak is 150 calories for 21 grams of protein) gives you more protein for fewer calories. Know which one you actually want before you walk in.

The mistakes that quietly double your meal

• Ordering "regular" on autopilot. That's a double. Always say "Little."
• Getting your own fries. One portion is a shared side, not a personal one.
• Forgetting the mayo. It's added by default on a lot of builds. Ask for none.
• The milkshake upsell. A Five Guys shake can rival the burger in calories. Save it for a planned treat day.
• "Free" refills. Regular soda calories still count even when the cup is free.

Frequently Asked Questions

What is the lowest calorie thing at Five Guys?

A bunless Little Hamburger with free veggie toppings is the lowest realistic option, around 300 calories of mostly protein. If you keep the bun, a Little Hamburger with no cheese and no mayo sits near 480 calories. A plain hot dog or veggie sandwich are other lighter picks compared to a double burger with fries.

Can I eat Five Guys and still lose weight?

Yes, if you control the two big levers: order the Little (single) burger and skip or split the fries. A Little burger with free veggies and no fries fits most cutting calorie budgets. The default double-patty burger plus a regular fry is what blows people up, not the restaurant itself.

Are Five Guys fries worse than McDonald's fries?

Per order, yes, mostly because of portion size. A Five Guys Little fry is around 525 calories while a McDonald's small is 230. Five Guys also overfills every size. The fries themselves are fried in peanut oil and heavily salted, so the per-gram difference is smaller than the portion difference.

Does a bunless Five Guys burger save a lot of calories?

The bun is roughly 260 calories, so going bunless or lettuce-wrapped cuts a meaningful chunk. On a Little Hamburger that takes you from about 480 down to around 300 calories. It's messy to eat, but it's one of the simplest ways to make the meal low-carb and lower-calorie at once.

Is a Little Cheeseburger enough food?

For most people, yes. It's a single quarter-pound-style patty on a full-size bun with unlimited toppings, so it eats bigger than it sounds once you load grilled onions, lettuce, tomato, and pickles. If you're genuinely still hungry, add a second patty rather than fries, since the protein keeps you fuller.