McDonald's · Breakfast
Mighty McMuffinMcDonald's calories & macros
A McDonald's Mighty McMuffin has 442 calories (1,849 kJ), with 29.7 g protein, 21.7 g fat and 30.8 g carbs per serve. That is about 21% of the 8,700 kJ daily intake used on Australian food labels.
A6.7 g protein per 100 kcal - excellent protein density on Macro Menu's S to F scale
Open in the Macro Menu appAll McDonald's items
Full nutrition
| Per serve | Amount |
|---|---|
| Energy | 1,849 kJ (442 kcal) |
| Protein | 29.7 g |
| Fat, total | 21.7 g |
| - saturated | 10.0 g |
| Carbohydrate | 30.8 g |
| - sugars | 7.0 g |
| Sodium | 1,111 mg |
As published by McDonald's.
Customise it: what swaps change
Per-serve totals after a common change. Every part here is McDonald's own published figure. A steamed bun is the same bun, so it doesn't change the numbers.
| Change | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| As sold | 442 | 1,849 | 29.7 | 21.7 | 30.8 |
| No Cheese (-49 kcal) | 393 | 1,644 | 26.9 | 17.8 | 30.1 |
| No Bacon (-32 kcal) | 410 | 1,715 | 25.8 | 20.0 | 30.5 |
| No Egg (-71 kcal) | 371 | 1,552 | 23.7 | 16.5 | 30.5 |
| +1 Cheese Slice (+49 kcal) | 491 | 2,054 | 32.5 | 25.6 | 31.5 |
| +1 Bacon Rasher (+32 kcal) | 474 | 1,983 | 33.6 | 23.4 | 31.1 |
| +1 Egg (+71 kcal) | 513 | 2,146 | 35.7 | 26.9 | 31.1 |
How it compares with other McDonald's breakfast
Of the 23 breakfast on the McDonald's menu, Mighty McMuffin ranks 5th of 23 for protein and is the 12th lowest in calories. The category average is 438 kcal, so this one is above average by 4 kcal.
| Item | kcal | kJ | Protein g | Fat g | Carbs g |
|---|---|---|---|---|---|
| Chicken McMuffin | 402 | 1,682 | 19.2 | 18.4 | 38.3 |
| Deluxe Sausage & Egg McMuffin | 409 | 1,711 | 22.3 | 22.8 | 27.1 |
| Chicken and Bacon McMuffin | 428 | 1,791 | 22.9 | 19.6 | 38.6 |
| Mighty McMuffin | 442 | 1,849 | 29.7 | 21.7 | 30.8 |
| Double Sausage McMuffin | 449 | 1,879 | 26.5 | 26.2 | 25.9 |
| Brekkie Wrap | 449 | 1,879 | 17.9 | 25.1 | 36.5 |
| Birdie Sausage & Egg McMuffin | 457 | 1,912 | 22.2 | 28.2 | 28.0 |
Sorted by calories, showing the items either side of this one. See every McDonald's breakfast item.
Quick answers
How many calories are in a McDonald's Mighty McMuffin?
A McDonald's Mighty McMuffin has 442 calories, which is 1,849 kilojoules, per serve as sold in Australia.
How much protein is in McDonald's's Mighty McMuffin?
29.7 g of protein, which works out to 6.7 g per 100 kcal - rated A (excellent) for protein density on Macro Menu.
How many kJ is that?
1,849 kJ. Australian menus list kilojoules; divide by 4.184 to get calories. 1,849 kJ is roughly 21% of an 8,700 kJ day.
Is it a lower-calorie choice at McDonald's?
Within McDonald's breakfast it is the 12th lowest of 23. The lowest-calorie option in that category is Hash Brown at 143 kcal, and the highest-protein is Mega Brekkie Wrap with 45.8 g.
More McDonald's breakfast
Double Sausage McMuffin449 kcal · 26.5 g protein
Brekkie Wrap449 kcal · 17.9 g protein
Chicken and Bacon McMuffin428 kcal · 22.9 g protein
Birdie Sausage & Egg McMuffin457 kcal · 22.2 g protein
Deluxe Sausage & Egg McMuffin409 kcal · 22.3 g protein
Chicken McMuffin402 kcal · 19.2 g proteinMcDonald's full menuHighest protein at McDonald'sLowest calorie at McDonald'sOther restaurants
Source: McDonald's Australia nutrition information (QAM-059 / QAM-058) and McDonald's own live nutrition service (www.mcdonalds.com/dnaapp), per serve as sold. Last checked against the live menu on 8 September 2026. Every source.