How Many Calories Are in Prosecco?

The short answer: a 125ml glass of Brut Prosecco contains around 1.5g of sugar, which is roughly a quarter of a teaspoon. That is less than most people expect, and considerably less than a soft drink. But the figure changes a great deal depending on which style of Prosecco you pick, and the label rarely makes it obvious.

This guide explains how much sugar is really in Prosecco, what the sweetness classifications on the bottle actually mean, how it compares with other drinks, and which options are lowest if you are trying to cut sugar without giving up fizz.

How much sugar is in a glass of Prosecco?

A standard 125ml glass of Brut Prosecco contains approximately 1.5g of sugar. For context, the NHS recommends adults consume no more than 30g of free sugars a day, which is about seven teaspoons. A glass of Brut Prosecco represents a small fraction of that.

The confusion comes from the assumption that anything fizzy and pleasant must be loaded with sugar. Soft drinks have earned that reputation. Prosecco has not, at least not in its drier styles.

What matters far more than the drink category is the specific style in the bottle, and that is where the labelling becomes unhelpful.

Why the sugar is there in the first place

Sugar in wine comes from two places. The first is natural grape sugar left over after fermentation, known as residual sugar. Yeast converts grape sugar into alcohol, and whatever it does not convert remains in the finished wine.

The second is the dosage, a small addition of sugar solution made after the second fermentation in sparkling wine production. Producers use it to balance acidity and set the house style. It is a deliberate choice rather than an accident of the process.

This is why two bottles of Prosecco from the same region, made from the same grape, can differ by a factor of five in sugar content. One has been fermented drier and given little or no dosage. The other has been sweetened to a house style.

The Prosecco sweetness scale, explained

Sparkling wine sweetness is governed by classifications that appear on every bottle. The terms are counterintuitive, and this is where most people go wrong: Extra Dry is sweeter than Brut, despite what the name suggests.

From driest to sweetest:

The practical takeaway: a glass of Demi-Sec Prosecco can contain more than fifteen times the sugar of a Brut Nature. Same grape, same region, same bottle size. The classification on the label is the only thing telling you which you have picked up.

Classification standards for Prosecco are set by the Consorzio di Tutela del Prosecco DOC, the body responsible for protecting the appellation.

How Prosecco compares with other drinks

Sugar content is easier to judge in context. The figures below are approximate averages per 100ml, since serving sizes vary enormously between categories.

A Brut Prosecco sits closer to a dry still wine than to anything from the soft drinks aisle. The gin and tonic figure is worth noting too, since the sugar there comes almost entirely from the tonic rather than the spirit.

Calories follow a similar pattern, though they are driven by alcohol as much as sugar. We cover that in detail in our guide to how many calories are in Prosecco.

Which Prosecco has the least sugar?

Brut Nature, without exception. It contains between 0 and 3g of sugar per litre, and many examples contain none at all, because no dosage has been added after the second fermentation.

If Brut Nature is unavailable, Extra Brut is the next driest, followed by Brut. Anything labelled Extra Dry, Dry or Demi-Sec will be sweeter, and the gap widens quickly.

One complication: UK labelling requirements for wine do not mandate a full nutritional breakdown, so the exact figure is rarely printed on the bottle. The classification is your most reliable guide in a supermarket. Specialist retailers, ourselves included, tend to publish the actual numbers.

The same logic applies across still wine. If you want the full picture, our guide to which type of wine has the lowest sugar content covers reds, whites and rosés.

Can you get zero sugar Prosecco?

Yes. Producers can ferment fully dry and skip the dosage entirely, which leaves no residual sugar in the finished wine. The result is a Prosecco with 0g of sugar per serving at full strength, rather than a reduced-alcohol substitute.

This is the approach behind the sparkling wines in our own range. Nothing is stripped out after the fact and nothing is watered down. The wine is simply made dry from the start, which is also why the calorie count comes down: less residual sugar means fewer calories per glass.

TRACES Prosecco DOC Treviso

Our own label Prosecco, made at a family vineyard in northern Italy where the grapes are hand-selected in early September and slowly pressed. Completely sugar-free, 78 calories per 125ml glass, and 11% ABV, so it is full strength rather than a lighter substitute. Suitable for vegetarians and vegans.

It sits alongside the rest of the TRACES range, which includes a Sauvignon Blanc, a Rosé and a Merlot, all made to the same principle of fermenting dry rather than reducing after the fact.

Other zero sugar sparkling options

If you would rather explore beyond our own label, the collection also includes Cava made in the Brut Nature style, which is the driest classification available, and a range of Prosecco DOCG options from Italian producers. Every product page lists the calorie count, sugar content and ABV, so you can compare like for like rather than guessing from the label.

Browse the full low calorie sparkling wine collection

How to choose a lower sugar Prosecco

Three things to look for, in order of usefulness:

Check the classification first. Brut Nature or Extra Brut if you want the lowest possible sugar. Brut if those are unavailable. Avoid Extra Dry and anything sweeter, regardless of how the name reads.

Look for a published figure. Retailers who list sugar content per serving are giving you something the label is not obliged to. If a figure is not available anywhere, the classification is your fallback.

Ignore alcohol-free as a shortcut. Removing the alcohol does not necessarily remove the sugar, and many alcohol-free sparkling wines contain more sugar than a Brut Prosecco, not less, because sugar is often added to compensate for the loss of body.

Frequently asked questions

Is Prosecco high in sugar?

No. A glass of Brut Prosecco contains around 1.5g of sugar, roughly a quarter of a teaspoon. Sweeter classifications such as Demi-Sec contain considerably more, up to around 6.25g per glass.

Which is drier, Brut or Extra Dry?

Brut is drier. The naming is genuinely counterintuitive. Extra Dry contains 12 to 17g of sugar per litre, while Brut contains up to 12g, and Brut Nature contains almost none.

Does Prosecco have more sugar than Champagne?

Not inherently. Both are governed by the same sweetness classifications, so a Brut Champagne and a Brut Prosecco sit in the same range. Style matters more than region.

Is Prosecco keto friendly?

Dry styles can be. A Brut Nature or a zero sugar Prosecco contains negligible carbohydrate per serving. Sweeter styles do not fit. Our keto wine collection filters for the lowest carbohydrate options across the range.

Does lower sugar mean lower calories?

Partly. Alcohol contributes around 7 calories per gram and is the larger factor in most wines, but residual sugar adds to the total. A dry, zero sugar sparkling wine at full strength will generally be lower in calories than a sweeter equivalent at the same ABV. Drinkaware publishes a useful breakdown of where the calories in alcoholic drinks come from.

The short version

Prosecco contains far less sugar than most people assume, and the style on the label matters more than the drink itself. Brut Nature is the driest and lowest in sugar, Demi-Sec the sweetest, and the difference between them is substantial. If you want a sparkling wine with no sugar at all and no compromise on strength, look for wines fermented fully dry rather than reduced-alcohol alternatives.

Shop low calorie sparkling wine and Prosecco

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