One Impossible Whopper lists 25 g of protein per sandwich, which is half of the FDA’s 50 g Daily Value for protein.
You’re here for one thing: the protein number. Not guesses. Not hype. Just the count you can plug into your day.
The Impossible Whopper is a plant-based take on the classic Whopper, built on an Impossible patty plus the usual bun, veggies, and sauces. Burger King also notes the patty is made from plants and lists soy and potato protein among the main ingredients. Burger King’s Impossible Whopper page has the product details and ingredient framing.
What “Protein” Means On A Menu Nutrition Line
Protein on a nutrition line is measured in grams. It counts the total protein in the serving you’re ordering, not just the patty.
People use protein numbers in a few practical ways: building meals that keep them full, planning macros, or balancing a day when breakfast was light on protein.
Daily Value Helps You Sanity-Check The Number
The FDA lists a Daily Value (DV) for protein of 50 g. That DV is a reference point you can use for quick math. FDA Daily Values reference includes protein at 50 g.
So when you see 25 g of protein on a sandwich, that’s 25 ÷ 50 = 0.5, or 50% DV. No drama. Just clean arithmetic.
Burger King Impossible Whopper Protein: What You Get Per Sandwich
The Impossible Whopper is widely listed at 25 g of protein per sandwich with a 630-calorie entry in major nutrition databases that track restaurant items. CalorieKing’s listing shows 25 g protein for the Burger King Flame Grilled Impossible Whopper. CalorieKing nutrition entry documents 25 g protein.
That 25 g figure is also the one commonly repeated in coverage that points back to Burger King’s published nutrition info for the item.
Why The Protein Count Can Look Different Across Sites
You may see other protein numbers floating around. Here’s why that happens without getting lost in the weeds.
- Different markets, different builds. Toppings and portion specs can shift by country or region.
- Different database entries. Some sites log “no mayo,” “with cheese,” or other variants as separate foods.
- Rounding and label rules. Nutrition labels round, and databases can update over time.
If you want one number to run with for day-to-day tracking, 25 g per sandwich is the cleanest, most repeatable figure across major references.
What Part Of The Sandwich Brings The Protein
The patty carries the bulk of the protein. The bun adds a smaller slice. The veggies contribute a little. Mayo brings almost none.
That last point matters because people often remove mayo to drop calories while keeping protein steady. Many logs list “Impossible Whopper (No Mayo)” with the same 25 g protein figure.
How To Think About Protein If You Customize Your Order
Custom orders change calories and fat far more than they change protein, unless you add a protein-bearing ingredient like cheese.
Cheese is the easiest add-on to quantify. A USDA Foods vendor label for American cheese lists 5 g protein per 1 oz serving (two slices). USDA Foods American cheese label shows 5 g protein per serving.
So if you add cheese, your protein can move up by roughly the cheese portion you get. If a location uses one slice instead of two, you’d scale that amount down.
Protein And Other Macros You’ll Want Beside The Number
Protein is only one line. If you’re tracking, the surrounding lines help you predict how the meal will feel.
- Calories: A common listing is 630 calories.
- Carbs and fat: Often listed around 58 g carbs and 34 g fat in the same entry sets.
- Sodium: Restaurant sandwiches can carry a lot of sodium, so it’s worth checking if you’re watching that line.
If your goal is “higher protein without the heavy feel,” custom swaps like no mayo can lower calories while leaving protein in place, based on the way many databases list the no-mayo variant.
Impossible Whopper Protein Compared To Common Benchmarks
Numbers land better with context. Here’s a simple way to frame 25 g of protein without turning it into a lecture.
Using the FDA’s 50 g Daily Value for protein, 25 g is 50% DV. That’s a neat midpoint: it can cover a big chunk of a day if you spread protein across meals.
Quick Percent Daily Value Math
- 12.5 g protein = 25% DV
- 25 g protein = 50% DV
- 37.5 g protein = 75% DV
- 50 g protein = 100% DV
If you’re comparing items, this DV framing keeps you from overthinking the decimal dust.
Impossible Whopper Protein Options And Build-Your-Order Notes
Below is a practical table you can use while ordering. It’s built around the most consistent protein anchor (25 g for the sandwich) and the cleanest add-on math (cheese protein per USDA label).
| Order Version | Protein (g) | What Changes In Real Life |
|---|---|---|
| Standard Impossible Whopper | 25 | Baseline protein count used across major nutrition listings. |
| No mayo | 25 | Protein stays level in common “no mayo” entries; calories drop. |
| Add American cheese (2 slices / 1 oz) | 30 | USDA label lists 5 g protein per 1 oz (two slices). |
| Add American cheese (1 slice) | 28 | Half of the 2-slice serving adds 2.5 g protein; rounded for tracking. |
| Extra veggies (lettuce, tomato, onion, pickles) | 25 | Protein changes are small; this is more about volume and crunch than macros. |
| No bun (eat open-face or fork-and-knife) | Varies | Protein shifts down a little since buns add some protein; exact bun specs vary by market. |
| Pair with a high-protein side (outside the sandwich) | Varies | Use this when you want to raise total meal protein without stacking more sauces or bread. |
How To Use The Protein Number For Real Meals
Protein planning works best when it stays simple. Pick a target for the day. Then spread it across meals so you’re not trying to cram it all into dinner.
If You Want A 30 g Meal Without Overdoing Extras
Start with the sandwich at 25 g. Then add one measured protein add-on. Cheese is the cleanest to count, since the USDA label gives a direct protein number per serving.
That puts you at 30 g with a standard “two-slice” serving. If your store uses a single slice, you’ll land closer to 28 g for the sandwich-plus-cheese combo.
If You Want To Cut Calories While Keeping Protein
No mayo is the classic swap. Protein barely moves. Calories can. Many “no mayo” logs keep protein at 25 g while calories drop.
That’s handy if you’re trying to keep the meal lighter without turning it into a different sandwich.
If You Eat Plant-Based But Still Track Protein
This sandwich is plant-based at the patty level, yet it isn’t vegan by default because it comes with mayonnaise, and Burger King notes standard preparation details in its product info.
If your goal is plant-based plus a steady protein line, ordering choices like “no mayo” can fit the plan while leaving the protein number intact in common nutrition listings.
Protein Math You Can Screenshot
This second table turns the protein number into quick meal totals using the FDA’s 50 g Daily Value as the yardstick.
| Meal Setup | Total Protein (g) | Percent Of 50 g DV |
|---|---|---|
| Impossible Whopper only | 25 | 50% |
| Impossible Whopper + 2 slices American cheese | 30 | 60% |
| Impossible Whopper + 1 slice American cheese | 28 | 56% |
| Two Impossible Whoppers | 50 | 100% |
Common Protein Questions People Ask At The Counter
Does “No mayo” change the protein?
Most listings keep protein at 25 g for the no-mayo version, since mayo brings little to no protein while the patty and bun stay the same.
Does adding cheese raise protein?
Yes. A USDA Foods label lists 5 g protein for a 1 oz serving of American cheese (two slices). If your sandwich gets that full serving, you add 5 g to the base sandwich protein.
Is 25 g of protein “a lot”?
It’s half of the FDA’s Daily Value for protein (50 g). That’s a clear, grounded way to judge it without guessing.
Takeaways That Hold Up When You Re-Check Later
If you only want the protein number, here it is again: the Impossible Whopper is commonly listed at 25 g protein per sandwich.
If you want context, the FDA’s protein DV is 50 g, so that sandwich lands at 50% DV.
If you want a clean way to raise protein without changing the whole order, cheese has a labeled protein number you can count: 5 g per 1 oz (two slices) on the USDA Foods label.
References & Sources
- CalorieKing.“Calories in Burger King Flame Grilled Impossible Whopper.”Lists the sandwich’s protein (25 g) and core macro lines used for tracking.
- U.S. Food and Drug Administration (FDA).“Daily Value on the Nutrition and Supplement Facts Labels.”Provides the Daily Value for protein (50 g) used for percent-DV math.
- Burger King Canada.“Impossible Whopper.”Describes the product and notes plant-based patty ingredients like soy and potato protein.
- USDA Foods (FNS Vendor Label).“American Cheese, Yellow, Sliced — Nutrition Facts.”Shows 5 g protein per 1 oz (two slices), used to estimate added protein from cheese.