A McDonald's Big Mac typically contains around 550 to 580 calories. The most commonly cited calorie counts are:
- 580 calories according to McDonald's official US website and Wikipedia
- Around 550 calories according to CalorieKing and Medical News Today
- Other estimates range from about 540 to 563 calories depending on the source
In the UK, a Big Mac contains slightly fewer calories, approximately 493 calories
. Overall, the Big Mac calorie content varies slightly by region and source but generally falls between 490 and 580 calories per sandwich.