Fast Food: The Real Calories in Your Favourite Meals

🥗 Radish · 7 min

Eating fast food now and then is just life. But between a plain burger and a full meal, the calorie gap can be huge, and we often underestimate it. No guilt here: just ballpark figures so you can decide with eyes open.

Important: the numbers below are rough estimates. They vary by chain, recipe, sauces and portion size. See them as reference points, not exact values.

A few classics, in ballpark figures

Here are realistic ranges, to take with a pinch of salt:

Plain burger: about 250 to 500 kcal depending on size and cheese.
Large loaded burger (double, bacon, sauces): often 600 to 1000 kcal, sometimes more.
Full meal (burger + medium fries + sugary drink): regularly 900 to 1300 kcal.
Pizza slice: about 250 to 350 kcal per slice, so a whole pizza adds up fast.
Classic kebab (wrap or bread, meat, sauce, sometimes fries included): often 600 to 1000 kcal depending on fillings.
Fries: about 300 to 500 kcal for a medium portion, more for a large.

The lesson: it's often the sides and drinks that tip the total.

Why the numbers vary so much

Two meals with the same name can weigh very differently. The reasons:

The portion size, which changes from one chain to another.
The sauces, sometimes very calorie-dense for a small amount.
The cooking method and the extras (cheese, bacon, double patty).
The drink: a sugary soda can add 150 to 250 kcal without filling you up.

That's why talking in "about" is more honest than quoting a precise figure.

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Choose a little better, without depriving yourself

A few simple tweaks make a real difference:

Go for a sugar-free drink or water: often the easiest saving.
Pick a smaller fries size rather than the large by reflex.
Limit the richest sauces or ask for them on the side.
A plain burger often fills you up as much as a double, for far fewer calories.
Add some freshness (salad, veg) when you can.

It's not about banning anything, just staying in control.

General information, not medical advice.

Spotting hidden calories

Beyond the main dish, several sources inflate the total without you noticing:

Drizzled sauces (mayo, sweet sauces): very dense for just a few spoonfuls.
Extra melted cheese and bacon, easy to stack up.
Add-on desserts offered at the till, often taken out of habit.
Free-refill drinks, where the sugary top-ups pile up.

None of these options is forbidden. The aim is simply to see them, so you can decide which ones are really worth it for you that day.

Know the numbers before you order

The most useful thing is to have an estimate before you choose. Radish offers 479 fast-food products organised by chain, with their values and the Nutri-Score, so you can compare two options in seconds. And because everything is counting without a connection, with no account and no ads, you check this info without leaving a trace or seeing a single ad.

FAQ

Can a fast-food meal top 1000 kcal?

Yes, it's common for a full meal with large fries and a sugary drink. That's why it helps to check the ballpark before ordering.

Are the listed numbers reliable?

They're estimates. Real values vary by portion, sauces and preparation, so think in ranges.

What's the easiest lever to lighten a meal?

Often the drink: switching from a sugary soda to water saves several hundred kcal without changing the food.

Fast food isn't forbidden or dramatic: you just need to know what you're ordering so you can adjust when you want. Drink, fries size, sauces: three small levers, one big effect. To compare meals at a glance and in private, try Radish, free: 479 fast-food products, Nutri-Score included, offline.

General information, not medical advice.

🔎 Methodology & sources. Every nutrition figure in this article is cross-checked against official sources (ANSES, EFSA, WHO, CIQUAL/USDA, French Public Health agency), and health topics are reviewed before publication against our internal reference framework. See our full methodology →