How many calories are in an egg?

A medium egg (around 52g) contains approximately 68 kcal. A large egg (63g) has about 82 kcal, and a very large egg (69g) comes in at roughly 91 kcal. Per 100g, all eggs provide 131 kcal regardless of size or farming method — the nutritional content is identical across free range, organic, and barn eggs.

Are eggs bad for cholesterol?

Current NHS guidance does not set a limit on egg consumption for most people. While eggs do contain dietary cholesterol (around 370mg per 100g), research over the past two decades has shown that dietary cholesterol has a much smaller effect on blood cholesterol than previously thought. Saturated fat intake is a more significant factor. Eggs are relatively low in saturated fat at 2.5g per 100g. Most healthy adults can eat eggs daily without concern.

Is there a nutritional difference between free range and barn eggs?

No meaningful difference. Every egg product we checked at Tesco — free range, organic, barn, and conventional — showed identical nutritional values: 131 kcal, 12.6g protein, 9.0g fat, and less than 0.1g carbohydrate per 100g. The differences between farming methods relate to animal welfare and environmental standards, not nutritional content. Buy whichever aligns with your values and budget.

What is the glycemic index of eggs?

Eggs has a glycemic index of 0, which is classified as Low GI. Eggs contain virtually zero carbohydrates, so they have no measurable glycemic index.

Glucose: LowNOVA 1

Nutritional Information for Eggs

Eggs are a nutrient-dense whole food delivering 131 kcal and 12.6g of protein per 100g, with virtually zero carbohydrates. From a SpikeSaver perspective, eggs have almost no glucose impact — they contain less than 0.1g of carbohydrate per 100g, making them one of the safest foods for blood sugar management. Every egg product we checked at Tesco scored NOVA 1.

Nutrition per 100g

Nutrient	Per 100g	Per serving
Energy	131 kcal / 547 kJ	82 kcal
Protein	12.6g	7.9g
Carbohydrates	0g	0g
of which sugars	0g	—
Fat	9g	5.7g
of which saturated	2.5g	—
Fibre	0g	—
Salt	0.39g	—

Serving size: 1 large egg (~63g) · Source: Tesco product page, October 2025

Glucose impact

Glycemic Index

Low

Glucose risk

Eggs contain less than 0.1g of carbohydrate per 100g, which is nutritionally negligible. They have virtually no effect on blood glucose levels. The combination of protein and fat in eggs actually helps slow the absorption of carbohydrates from other foods eaten at the same meal, making eggs a useful addition to any blood-sugar-conscious diet.

Processing level

NOVA 1 (unprocessed)

Whole eggs in their shell are a single-ingredient, unprocessed food. Whether free range, organic, barn, or conventional — the nutritional profile and NOVA classification are identical. Every egg product we checked at Tesco contains exactly one ingredient: egg.

Eggs at Tesco

Source: Tesco product page, October 2025

Tesco Large Free Range Eggs 6 Pack

£2.00*NOVA 1 (unprocessed)

Tesco Free Range Eggs Medium 6 Pack

£1.75*NOVA 1 (unprocessed)

Tesco Large Free Range Eggs 12 Pack

£3.25*NOVA 1 (unprocessed)

Tesco Mixed Sized Organic Eggs 6 Pack

£2.80*NOVA 1 (unprocessed)

Happy Egg Free Range Eggs Large 6 Pack

£2.55*NOVA 1 (unprocessed)

*Prices were correct at the time of collection and may have since changed. Check Tesco.com for current pricing.

What to watch for when shopping

Whole eggs are always NOVA 1 regardless of brand, size, or farming method. The only egg products that score higher are liquid egg whites with preservatives, pre-made omelettes, or egg-based ready meals. If you are buying eggs in their shell, every option at Tesco is nutritionally equivalent. Budget tip: Tesco Medium Free Range Eggs 12 Pack at £2.80 (23p per egg) offers the best value for free range.

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