Whopper Jr. Calories & Nutrition — Burger King
Burger King Whopper Jr.: 310 cal, 13g protein, 27g carbs, 18g fat per 1 sandwich (standard build, with mayo). Full nutrition breakdown, lighter ordering swaps, and the fastest way to track it.
The Whopper Jr. at Burger King (1 sandwich (standard build, with mayo)) contains 310 calories, with 13g of protein, 27g of carbs, and 18g of fat. Below is the full nutrition breakdown, how it compares to other whoppers & burgers on the menu, and the fastest way to log it.
Where the calories come from
Splitting the 310 calories by macro: 16% from protein, 34% from carbs, and 50% from fat. In the Whopper Jr., fat is the biggest contributor at roughly 50% of calories (18g × 9 cal/g). That makes the whopper jr. more calorie-dense than the gram counts suggest — small portion differences move the total quickly.
Lighter swaps and ordering tips
About 250 kcal without mayo — a solid lighter choice.
Keep in mind that published numbers describe the standard build — every added sauce, swapped side, or upsized portion moves the totals from the table above.
Other whoppers & burgers at Burger King
| Item | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Whopper Jr. | 310 | 13g | 27g | 18g |
| Whopper | 660 | 28g | 49g | 40g |
| Whopper with Cheese | 740 | 32g | 50g | 46g |
| Double Whopper | 900 | 48g | 49g | 58g |
The fastest way to log a Burger King order
Official numbers like the ones above describe a textbook whopper jr. — not the one with extra cheese or the sauce you asked for on the side. Instead of hunting through a database for the closest match, take a photo in Bento Bunny: the app recognises what's actually on the tray, estimates portions, and files the macros into your day. On iOS 26+ the AI runs entirely on-device.
Start tracking with Bento Bunny
AI calorie tracking — just Type what you eat.