How many calories are in one piece of Warburton's bread?

November 5, 2025 •

3 min read

According to official nutritional data, a single average slice of Warburton's Medium Sliced White bread contains 98 calories. However, the exact calorie count can vary significantly depending on the specific type and thickness of the bread, with different loaves offering different nutritional profiles.

Quick Summary

The calorie content of one piece of Warburton's bread depends on the variety and slice thickness. For example, a medium white slice has 98 kcal, while a thick white toastie slice has 140 kcal. Different varieties, including wholemeal and sourdough, have distinct nutritional profiles.

Key Points

Medium White Slice: An average piece of Warburton's Medium Sliced White bread contains 98 calories.
Thick Toastie Slice: A thicker Toastie slice has more calories, approximately 140 kcal per slice.
Wholemeal vs. White: Wholemeal varieties tend to be lower in calories per average slice and are higher in fibre.
Check the Label: The exact calorie count depends on the specific product and slice thickness, so always check the nutritional label.
Mind the Toppings: Additions like butter or jam can significantly increase the total calorie count of your bread.
Part of a Healthy Diet: As a source of carbohydrates and other nutrients, bread can be a healthy part of a balanced diet.

What Influences the Calorie Count?

Several factors determine the exact number of calories in a piece of Warburton's bread, making it crucial to check the specific product label. The main factors include:

Slice Thickness: Thicker slices, like those in the 'Toastie' range, have more bread per slice and therefore more calories than a standard medium slice.
Bread Type: The variety of bread—white, wholemeal, seeded, or sourdough—affects the calorie density and nutritional makeup. Wholemeal options are often higher in fiber, which can impact overall nutritional value.
Loaf Size: Loaves are sold in different sizes (e.g., 400g, 800g), which can sometimes affect the size and thickness of the average slice.

Calorie Breakdown by Warburton's Bread Type

To provide clarity, here is a detailed breakdown of the calorie content for several popular Warburton's bread types, based on their average slice size as stated by the manufacturer or reputable nutritional sites. It's important to remember that these are average figures and can have slight variations.

Warburton's Medium Sliced White Bread

This is one of the most common products and a good benchmark for comparison. An average slice weighs around 40.3g and contains approximately 98 calories.

Warburton's Toastie Thick Sliced White Bread

As the name suggests, these slices are thicker. The extra weight means a higher calorie count per piece. An average slice of the 800g loaf is 57.5g and contains 140 calories.

Warburton's Wholemeal Medium Sliced Bread

Often considered a healthier option due to its fiber content, the wholemeal variety has a slightly lower calorie count per slice than the equivalent white bread. An average slice (23.8g) from the 400g loaf has approximately 55 calories.

Warburton's Danish White Bread

This lighter option is a good choice for those watching their intake. A smaller, average slice (25.8g) contains around 61 calories.

Comparison Table: Calories in Warburton's Bread Slices

This table summarizes the nutritional information for an average slice of several Warburton's products, providing a quick reference for comparison.


Warburton's Bread Type	Average Slice Weight	Approximate Calories (kcal)	Approximate Fat (g)	Approximate Sugars (g)
Medium Sliced White (800g)	40.3g	98	0.8	1.2
Toastie Thick Sliced White (800g)	57.5g	140	1.2	1.7
Wholemeal Medium (400g)	23.8g	55	0.7	0.6
Danish White (400g)	25.8g	61	0.4	0.7
White with Sourdough (400g)	40g	98	0.4	1.2

How to Account for Toppings

When considering the calories in your bread, it is vital to remember that toppings can drastically increase the total. While bread is a relatively low-fat food on its own, adding butter, margarine, or spreads can quickly add significant calories and fat.

List of Common Topping Additions (Approximate):

Butter: A 10g serving of butter can add around 76 calories and 8.4g of fat to your toast.
Jam or Marmalade: A single tablespoon (around 20g) of jam can add 50-60 calories, mostly from sugar.
Peanut Butter: A typical serving of two tablespoons can add over 190 calories and a significant amount of fat.
Cheese: A single slice of cheddar (28g) can contribute around 113 calories and 9.4g of fat.

Bread and a Healthy Diet

Including bread in a balanced diet is perfectly healthy. It is a good source of carbohydrates, which the body uses for energy. Wholemeal or seeded options offer more fibre, which aids digestion and can help with satiety. Warburton's emphasizes that carbohydrates from sources like bread should form about a third of your diet, as per the Eatwell Plate guidelines.

Conclusion

The number of calories in a single piece of Warburton's bread is not a fixed figure but is dependent on the specific product type and slice thickness. A standard medium white slice contains 98 calories, while a thicker toastie slice can be up to 140 calories. For those managing their intake, checking the product's nutritional information is the most accurate method. It's also important to consider the calorie impact of any toppings. Choosing wholemeal or lighter varieties can offer lower-calorie alternatives while still providing essential nutrients like fibre, B vitamins, and calcium. Ultimately, bread can be a healthy part of a balanced diet when consumed in moderation. For more detailed nutritional information on all their products, check the official Warburton's website.

Frequently Asked Questions

An average slice of Warburton's Medium White bread contains 98 calories.

A single piece of Warburton's Toastie Thick Sliced White bread contains 140 calories due to its larger size and thickness.

Yes, an average slice of Warburton's Wholemeal Medium bread has approximately 55 calories, which is fewer than the standard medium white slice.

No, toasting bread does not change its calorie content. The cooking process removes moisture but does not alter the nutritional value. The addition of toppings, however, will increase the total calories.

Based on average slice size, the Wholemeal Medium and Danish White options tend to be lower in calories than the standard white or toastie versions.

Warburton's bread, including the white varieties, is a source of essential nutrients like protein, calcium, iron, and B group vitamins.

Bread can be included in a weight-loss diet as part of a balanced intake of carbohydrates. Opting for lower-calorie, high-fibre versions like wholemeal and being mindful of portion sizes and toppings are key.