Oreos are one of the most iconic biscuits in the world, known for their dark chocolate biscuits and sweet vanilla-flavoured cream filling. Whether eaten whole, twisted apart or dipped in milk, they’re a treat that’s easy to enjoy but also easy to overeat. If you’re watching your calorie intake, it’s worth knowing exactly how many calories are in a single Oreo, as well as how quickly those calories can add up across a few biscuits or a full pack.

Calories by Portion Size

A single original Oreo biscuit contains approximately 53 calories. This number applies to the standard UK version, which weighs about 11 grams. A pack of three Oreos, commonly sold as a snack portion, delivers around 159 calories. A full 154g pack, which contains about 14 biscuits, totals over 740 calories if eaten in one go.

Other varieties, such as Double Stuf Oreos, flavoured editions, or chocolate-covered versions, contain more calories per biscuit ranging from 65 to over 100 calories each, depending on size and ingredients.

If you're snacking without measuring, it’s easy to consume several hundred calories from Oreos before even realising it, particularly when eating straight from the packet.

Nutritional Breakdown of Oreos

One standard Oreo contains around 8.3 grams of carbohydrates, of which 4.6 grams are sugar. It also includes about 2.3 grams of fat, with 0.5 grams saturated, and a small amount of sodium.

There is very little protein or fibre, and no meaningful amounts of vitamins or minerals. The biscuit is made primarily of refined flour, sugar and processed fats, giving it a high energy density and low nutritional value. The cream centre adds extra fat and sugar, which enhances the flavour but contributes further to its high-calorie status.

Benefits and Downsides of Eating Oreos

The main benefit of Oreos is that they’re enjoyable and satisfying in small amounts. They can hit the sweet spot when you’re craving a treat and are widely available, portable and easy to portion at least in theory.

The downside lies in how easily they can lead to mindless eating. Because they’re designed to be light, sweet and easy to chew, many people find it difficult to stop at just one or two. Their combination of sugar and fat triggers the brain’s reward system, encouraging you to go back for more.

Nutritionally, they offer little more than quick energy. Regular consumption can contribute to weight gain, blood sugar spikes, and increased cravings, especially when paired with other processed foods.

How Oreos Fit Into Your Diet

Oreos can fit into most diets as an occasional indulgence, especially when you stick to small, planned portions. If you’re following a calorie-controlled diet, having one or two Oreos after a balanced meal may satisfy a craving without throwing off your intake.

If you’re tracking calories or macros, it’s important to log Oreos accurately and avoid underestimating your portion. Eating them mindfully on a plate, not from the packet helps reduce the risk of overeating.

They are not ideal as a regular snack or a source of sustained energy, as they lack protein, fibre and nutrients that support fullness and overall health.

Glycaemic Impact of Oreos

Oreos have a high glycaemic index, driven by their combination of refined flour and sugar. This makes them a food that quickly raises blood sugar levels, especially when eaten on an empty stomach.

For people managing diabetes or insulin resistance, Oreos should be limited or paired with foods that slow digestion, such as nuts, yoghurt or high-fibre vegetables. They can still be included occasionally, but timing and portion control are essential to minimise their impact on glucose levels.

How Oreos Are Made and What They Contain

Oreos are made from a blend of refined wheat flour, sugar, vegetable oil, cocoa powder, leavening agents, and emulsifiers, with a cream centre that includes sweeteners, oil and flavourings. The exact recipe varies slightly by country, but most versions contain palm oil or canola oil, along with additives to stabilise texture and shelf life.

They are suitable for vegetarians in most formulations, though not vegan in all countries due to cross-contamination with dairy. There are now vegan-friendly versions available in some markets. Gluten-free and reduced-sugar varieties have also been launched to appeal to those with specific dietary needs.

Healthier Alternatives to Oreos

If you're looking for a healthier alternative, try dark chocolate squares, wholegrain oat biscuits, or homemade cookies made with almond flour, oats or natural sweeteners. For a treat with more nutritional value, you could also dip banana slices in peanut butter and dark chocolate for a satisfying, higher-fibre alternative.

There are also reduced-sugar biscuit brands and protein cookies that offer more satiety and a better macro profile. These options may not match the exact taste of an Oreo, but they deliver sweetness with added nutritional value.

Summary

Each standard Oreo contains about 53 calories, with most of the energy coming from sugar and fat. While delicious and easy to portion, Oreos offer little nutritional benefit and can contribute to excess calorie and sugar intake if not eaten mindfully. If you enjoy Oreos, keep servings small and consider alternatives when you want a treat that satisfies without compromising your health goals.