Who is this useful for?

Solo shoppers counting meal calories

If you expect to eat the whole pack, use its whole-pack calories rather than a per-100g or smaller stated portion figure. The NHS notes that a manufacturer’s portion may differ from the amount you eat.

Busy shoppers comparing convenient meals

A frozen ready meal can be straightforward to keep at home, but compare the stated serving size, calories, salt and saturated fat on each product rather than choosing by the range name.

Shoppers looking beyond the calorie figure

Check whether the meal contains protein and vegetables, and whether you intend to add anything alongside it. NHS guidance advises including protein in each meal and aiming for two or more portions of vegetables in a main meal.

What should you check before choosing?

Start with the amount you expect to eat, then compare the nutrition and ingredients of meals that could serve the same purpose.

Priority What to check Your needs
Calories eaten Find the kcal per portion or per 100g, the stated serving count and the amount you plan to eat. The NHS cautions that the stated portion may differ from yours. If I will eat the whole pack, I want to count the whole pack, not just the figure for 100g.
Meal components Check the ingredients for protein-containing foods and vegetables. If you plan a side, include it when considering the whole meal. I want to know what the meal contains beyond its calorie figure, particularly if I would add vegetables alongside it.
Salt and saturated fat Compare the nutrition panels of products with a similar serving role; use traffic-light labels where shown, without treating one colour as a verdict on the entire meal. I want to compare more than calories. In the Food Standards Agency and Ipsos Northern Ireland’s survey of 611 people interviewed between September and November 2024, 49% said they actively used traffic-light labelling when shopping for food; that figure covers food shopping generally, not frozen meals specifically.
Servings Confirm the stated number of servings and pack weight. Retailer frozen-meal ranges include both individual meals and larger products. When shopping for one, I need to know whether the pack is intended for one meal or will leave another portion.

What can catch you out?

  • Treating “under 500 calories” as the whole nutrition picture

    A calorie bracket does not tell you how much protein or vegetable content a particular meal has, or show its salt and saturated fat at a glance.

    Use the category to narrow your options, then read the chosen product’s serving and nutrition information.

  • Assuming every frozen ready meal serves one

    Frozen ranges include both individual meals and larger products, so the category name alone does not establish the portion you will eat.

    Check the serving count and pack weight, then work out calories for your intended portion.

    A multi-serve pack also leaves another portion to store or use if you eat only part of it.

  • Relying only on an online ingredient list

    Ingredients and allergen information can change when a product is updated.

    If an ingredient matters to you, read the current pack label before cooking and follow its cooking and storage instructions.

Retailer ranges to compare

Tesco

Tesco Groceries lists an “Under 500cal Meals” category within its frozen ready-meal range, alongside other types of frozen meal.

  • The category offers a starting point if you want to browse within a stated calorie bracket.
  • Check each product’s serving count, ingredients and nutrition panel; the category name does not establish its other nutritional characteristics.

Waitrose

Waitrose & Partners lists frozen meals including 400g lasagne, cottage pie and chilli con carne with rice.

  • The range gives shoppers several types of meal to compare product by product.
  • It also includes meals for two, so confirm the serving count before using a pack’s nutrition figures for your planned portion.

M&S

Marks & Spencer lists frozen ready meals of different sizes, including individual 270g fish pies and larger pies.

  • The individual pies offer a clearly identified size to examine when shopping for one.
  • The range also contains larger products; check the selected pack’s servings and nutrition rather than assuming the whole range is single-serve.

A Joybuy frozen meal option

This 700g frozen ramen is an option to assess as a meal for one: check how much you intend to eat and use the pack’s nutrition information for that amount.

Japanese-Style Frozen Black Garlic Tonkotsu Ramen 700g

Japanese-Style Frozen Black Garlic Tonkotsu Ramen 700g

For a planned solo meal, compare the calories and salt in the amount of this 700g ramen you intend to eat. Read the current pack for serving, allergen and cooking information.

View on Joybuy

Common questions

Is an under-500-calorie frozen meal enough information to choose by?

No. The category gives you a calorie bracket, but check the calories for the amount you will eat, the serving count and the product’s ingredients and nutrition panel. An under-500-calorie label does not describe every aspect of the meal.

Should I compare calories per 100g or per pack?

Use whole-pack calories if you intend to eat the whole pack. Per-100g figures can help compare products, but the NHS notes that a manufacturer’s stated portion may differ from the amount you actually eat.

What if the frozen meal contains few vegetables?

You can consider serving vegetables alongside it and include the side when assessing your total meal. NHS guidance advises aiming for two or more portions of vegetables in a main meal and including protein in each meal.

How should I check allergens in a frozen ready meal?

Read the current pack’s ingredient and allergen information before preparing the meal, especially if you have an allergy or intolerance. Product information can change, so do not rely solely on an earlier online listing.