How to track calories when eating out (UK)

To track calories when eating out in the UK, start with the calorie figures printed on the menu. Large chains (cafes, pubs, fast food and sit-down restaurants with 250 or more staff) have to show calories next to each dish, so the number is often right there. Where there is no figure, estimate the meal from its parts (the protein, the carbs, the sauce, the oil) and log it before you order, so you can pick a plate that fits your day rather than working it out after the plate is empty.

Here is how to do it in practice.

Use the menu calories first

Since 2022, big food businesses in England have had to display calories on menus, boards and delivery apps. That covers most of the places you would eat out: the pub chain, the coffee shop, the burger place, the pizza chain. The figure is usually next to the item or in a footnote.

If it is there, use it. It is the closest thing to a real measurement you will get, worked out from the recipe by the company that makes the dish. You do not need to weigh anything or guess. Read the number, log it, done.

A few practical notes:

• Watch the "per serving" wording. A sharing platter or a bottle of dressing may show the calories per half, per portion, or per 100g rather than for the whole thing. Check what the number actually refers to before you log it.
• Add the extras. The listed figure is usually for the main dish. Chips on the side, a dip, a soft drink, a pint, the bread that arrives first: those carry their own calories and are easy to forget.
• Small independents may not show them. The rule only applies to larger businesses. A local cafe or family-run restaurant will not always have the figures, so you fall back on estimating.

Estimating a pub meal or a homemade plate

When there is no menu figure, break the meal into its rough parts and add them up. You are aiming for a sensible ballpark, not perfection. A meal logged as an estimate is far more useful than a meal not logged at all.

Think about three things:

1. The base and the protein. A chicken breast, a piece of fish, a steak, a scoop of rice or pasta, a jacket potato. These are the bulk of the plate and the easiest to picture in portions.
2. The cooking fat and sauce. This is where restaurant food climbs above home cooking. Kitchens cook with butter and oil, and creamy or cheesy sauces add up quickly. If a dish looks glossy or rich, nudge your estimate up.
3. The sides and the drink. Chips, garlic bread, a pint, a glass of wine, a pudding. Each one is its own line to log.

A useful habit is to compare the restaurant plate to something you cook at home and log often. If your home chicken-and-rice is a known quantity, a similar pub plate is that, plus a bit more for the extra oil and the larger portion. Round up when in doubt. Restaurant portions tend to be bigger and richer than the ones you would serve yourself.

Log before you eat, not after

The single most useful move is to log the meal before you order it. Scan the menu, put your likely choice into your tracker, and see what it does to the rest of your day while you can still change your mind.

This flips the whole thing. Instead of finding out after pudding that you have gone well over, you see it up front and adjust: swap the chips for a side salad, skip the second pint, or just pick the grilled option over the fried one. The decision is easy because you are making it before the food arrives.

Fettle (stayfettle.com) is built for this. It is free, there is no account to set up, and it has UK foods and barcode scanning, so you can log a chain meal or a shop-bought item in seconds while you are still deciding. Log the plate you are tempted by, glance at what is left in your day, then order.

A quick rule of thumb for the days you cannot measure

Some meals you simply cannot pin down: a friend's cooking, a set menu, a buffet. On those days, do not chase a precise number. Log a fair estimate, lean towards over rather than under, keep your other meals a little lighter, and move on. One roughly logged meal will not undo a week of decent tracking. Consistency across the week matters far more than getting any single restaurant plate exactly right.

One honest note

This is general guidance, not medical advice. It suits most healthy adults who want to keep an eye on what they eat. If you have a health condition, are pregnant, or follow a specific eating plan for medical reasons, check with your GP or a registered dietitian before making changes.