McDonald’s Big Mac UK (2026): Price, Calories & Nutrition
I’ve eaten plenty of Big Macs over the years, and there’s still something satisfying about that first bite: soft sesame bun, two beef patties, crisp lettuce, cheese and that unmistakable Big Mac sauce. It’s also gloriously messy, especially when I’m eating one in the car on a rainy UK afternoon.
The price is worth checking too. With menu prices changing by restaurant, I know why people are searching for the exact McDonald’s Big Mac price UK, along with the Big Mac calories, before ordering.
For this 2026 guide, I’m using official McDonald’s UK data, so the figures here cover exact prices, kJ and kcal values, ingredients and the information listed for the current UK menu.
I’ve also broken everything down so I can answer the questions I’d want answered before ordering: the single Big Mac, the Medium Meal and Large Meal, full Big Mac nutrition, ingredients and allergen warnings.
McDonald’s Big Mac & Meal Prices
Big Mac
MEDIUM Big Mac Meal
Large Big Mac Meal
| Item | Price | Energy | Calories |
|---|---|---|---|
| Big Mac | £6.69 | 2127 kJ | 509 kcal |
| Medium Big Mac Meal | From £8.99 | 3543 kJ | 847 kcal |
| Large Big Mac Meal | From £9.99 | 3989 kJ | 955 kcal |
Big Mac
I’m using the official price of £6.69 for a single Big Mac, although I’d expect the final price to vary slightly by restaurant or location. So, if I’m checking how much is a Big Mac, my current official price for the McDonald’s Big Mac cost is clear:
Big Mac price UK: £6.69
Big Mac Calories & Nutrition (Per Portion)
When I’m checking Big Mac calories, I’m looking at 509 kcal per portion. Here’s my full Big Mac nutrition breakdown from the supplied 2026 data.
| Nutrient | Amount | %RI |
|---|---|---|
| Energy | 2127 kJ / 509 kcal | 25% RI |
| Fat | 25g | 36% RI |
| Saturated fat | 9.6g | 48% RI |
| Carbohydrates | 41g | 16% RI |
| Sugars | 8.1g | 9% RI |
| Fibre | 3.4g | — |
| Protein | 27g | 55% RI |
| Salt | 2.0g | 33% RI |
I use Reference Intakes based on an average adult diet of 8400kJ/2000kcal. So, if I’m asking how many calories in a Big Mac, the figure I’m working with is 509 kcal.
What’s in a Big Mac? (Ingredients Breakdown)
I’ve broken down the Big Mac ingredients below so I can see exactly what is in a Big Mac, including the energy value of each component.
- Beef Patty — 840 kJ / 202 kcal: I’m getting 100% pure beef, with no additives, fillers, binders, preservatives or flavour enhancers, seasoned with salt & pepper after cooking.
- Big Mac Bun — 843 kJ / 199 kcal: I’m getting wheat flour, water, sugar, yeast, sesame seeds, vegetable oil, potato starch, salt, emulsifier, pea protein and antioxidant.
- Big Mac Sauce — 212 kJ / 52 kcal: I’m getting water, rapeseed oil, gherkin, spirit vinegar, sugar, modified maize starch, free range egg yolk, mustard, salt, glucose-fructose syrup and xanthan gum.
- Cheddar Cheese Slices (Processed) — 196 kJ / 48 kcal: I’m getting vegetarian cheddar, milk, whey powder, butter, emulsifying salts and colours.
- Onions — 17 kJ / 4 kcal: I’m getting 100% onion.
- Lettuce (Iceberg) — 17 kJ / 4 kcal: I’m getting 100% iceberg lettuce.
- Pickle Slices — 2 kJ / 0 kcal: I’m getting gherkins, water, spirit vinegar, salt, firming agent, natural flavouring and preservative.
Big Mac Allergens
I’ve laid out the Big Mac allergens here so I can quickly check the main sources when looking at Big Mac allergy information.
| Allergen | Where it comes from |
|---|---|
| Gluten | Wheat — from the bun |
| Milk | Cheese, sauce |
| Egg | Sauce via free range egg yolk |
| Mustard | Sauce |
| Sesame | Bun |
| May contain traces of | Milk, barley, rye |
I wouldn’t treat a Big Mac as allergen-free just because an ingredient is removed. Because of shared kitchens and cross-contamination, McDonald’s can’t guarantee any item is allergen-free.
I also wouldn’t consider it onion-free: onions are now added directly to the patties during cooking, so McDonald’s can’t guarantee that the burger is free from onion.
Medium Big Mac Meal
Medium Big Mac Meal – Price, Calories & Nutrition
I’d budget from £8.99 for the medium Big Mac meal price, with the final meal deal price varying by location. For the medium Big Mac meal UK figures, I’m using the supplied nutrition data for the full combo.
| Nutrient | Amount | %RI |
|---|---|---|
| Energy | 3543 kJ / 847 kcal | 42% RI |
| Fat | 42.0g | 60% RI |
| Saturated fat | 11.1g | 55% RI |
| Carbohydrates | 83.0g | 32% RI |
| Sugars | 8.7g | 10% RI |
| Fibre | 7.0g | — |
| Protein | 30.3g | 62% RI |
| Salt | 2.72g | 45% RI |
For Big Mac meal calories, the complete combo comes to 847 kcal. My breakdown is:
- Big Mac: 509 kcal
- Medium Fries: 337 kcal
- Medium Coca-Cola Zero Sugar: 1 kcal
Large Big Mac Meal
Large Big Mac Meal – Price, Calories & Nutrition
I’d expect the large Big Mac meal price to start from £9.99, with the actual price varying by location. Upsizing gives me large fries and a large drink, taking the full Big Mac meal UK total to 955 kcal.
| Nutrient | Amount | %RI |
|---|---|---|
| Energy | 3989 kJ / 955 kcal | 47% RI |
| Fat | 47.0g | 67% RI |
| Saturated fat | 11.6g | 58% RI |
| Carbohydrates | 96.0g | 37% RI |
| Sugars | 8.9g | 10% RI |
| Fibre | 8.2g | — |
| Protein | 31.4g | 64% RI |
| Salt | 2.95g | 49% RI |
The large Big Mac meal calories come from this upsized combo:
- Big Mac: 509 kcal
- Large Fries: 444 kcal
- Large Coca-Cola Zero Sugar: ~1 kcal
Medium vs Large Big Mac Meal – Which to Choose?
For my Big Mac meal size comparison, I’d take the medium if I’m after a lighter portion. It’s £8.99 and 847 kcal, while the large is £9.99 and 955 kcal, so I’m paying exactly £1.00 more for roughly 108 extra calories.
That extra quid buys me a bigger portion, particularly the large fries. After a long day, I know those can feel pretty heavy, but if I’m hungry enough to want maximum fries, the upgrade makes sense; prices still vary by location.
Big Mac Meal Calories Breakdown
I keep the Big Mac combo calories simple by adding each part together:
- Big Mac: 509 kcal
- Medium Fries: 337 kcal
- Medium Coca-Cola Zero Sugar: ~1 kcal
- Medium meal total: 509 + 337 + ~1 = 847 kcal
- Large Fries: 444 kcal
- Large Coca-Cola Zero Sugar: ~1 kcal
- Large meal total: 509 + 444 + ~1 = 955 kcal
So my Big Mac meal calories increase mainly through the fries, while the drink contributes only around 1 kcal.
FAQs
How much is a Big Mac in the UK?
I’d use £6.69 as the official baseline, but there isn’t one nationwide UK price. In October 2026, I’ve seen local listings around £5.99–£6.09, so I always check my local McDonald’s app before ordering because that’s the only way I can see the exact price.
How many calories are in a Big Mac?
I count 509 kcal (2,127 kJ) in a single Big Mac. My nutrition figures are 25g fat, 9.6g saturated fat, 41g carbohydrates, 8.1g sugar, 27g protein and 2.0g salt.
How much is a Big Mac meal?
I use £8.99 from as the official medium meal baseline, but I’ve seen local branches around £7.79–£7.89. The large is officially from £9.99, while local prices I’ve checked sit around £8.49–£8.89. Franchise locations set their own rates, so I check my app first.
What is the difference between a medium and large Big Mac meal?
I get the same Big Mac either way. The difference is the size of the fries and drink, taking the meal from roughly 850 kcal for medium to around 960 kcal for large.
What allergens are in a Big Mac?
I treat the Big Mac as containing gluten from wheat/rye, sesame, milk, eggs and mustard. I never assume it’s 100% allergen-free because McDonald’s kitchens handle multiple allergens and cross-contamination can occur.
Is the Big Mac made with 100% beef?
Yes. I’m getting two 100% beef patties in the Big Mac, with no beef blend added to the patties.
Does the Big Mac contain onion?
Yes, it does. Onions are now cooked directly on the beef patties on the grill, so even if I ask for no onions, McDonald’s can’t guarantee the burger is onion-free.
Is the Big Mac halal in the UK?
No. I don’t consider the UK Big Mac halal because McDonald’s UK doesn’t offer halal-certified meat or menu items.
Can I get a Big Mac without the bun?
Yes, I can ask for a Big Mac without the bun, and McDonald’s usually accommodates the request. I still wouldn’t treat that as safe for a severe gluten allergy because the kitchen uses shared spaces and equipment.
Jamie is a fast-food expert, researcher, and digital creator dedicated to bringing you the most accurate and up-to-date guides on UK menu items, prices, and nutritional facts. With a sharp eye for detail and a genuine love for high-street dining, Jamie tests, verifies, and updates menu data so you can plan your next meal with total confidence.
