Keto Sweets UK: How to Read the Labels That Matter

The ketogenic diet keeps carbohydrate low enough that the body runs mainly on fat. This is an editorial label reading guide for sweet shopping on that diet, not personal dietary advice, and anyone managing a health condition alongside keto should lean on their healthcare team.

How does a UK sweets label report carbohydrate?

Three lines do the work. The carbohydrate figure is the total. of which sugars tells you how much is sugars. of which polyols appears on most sugar free sweets and tells you how much of the total is polyol sweeteners such as maltitol, isomalt and sorbitol. UK labelling law counts those three at 2.4 calories per gram rather than sugar's 4, and our guide to sugar alcohols explains why: they are absorbed slowly and only in part.

Sugar free does not mean carbohydrate free. It is a claim about sugars, no more than 0.5 g per 100 g, defined in the GB nutrition and health claims register. A boiled sweet can be honestly sugar free while its carbohydrate line reads more than 80 g per 100 g, nearly all of it polyols. Both numbers are true. Keto shopping is the discipline of reading the second one.

What is the net carbs calculation?

Net carbs is not a UK labelling term. It is arithmetic the keto community does with the label's own numbers, and the formula depends on which side of the Atlantic printed the label. A US panel folds fibre into total carbohydrate, so the American formula subtracts fibre and then some or all of the sugar alcohols. A UK table already excludes fibre from the carbohydrate line, so on a UK pack the only live subtraction is the polyol one. The debated part is how much of it: some approaches subtract the full polyols figure, others subtract half for every polyol except erythritol, while the cautious count them whole. The honest position is that polyols are absorbed to different degrees, they are not zero and they are not sugar, so pick the convention your own plan uses and apply it consistently with the numbers printed on the pack.

What do the numbers look like on Diablo packs?

Here are two of ours with the full carbohydrate picture stated plainly, so the arithmetic is yours to run:

Not a low calorie food. See nutrition information for sugar and calorie content.

Notice what those figures let you do: run whichever polyol convention your plan follows against real printed numbers, rather than trusting a front of pack impression in either direction. Every product page on our site carries the full nutrition table.

The thirty second label audit

Four checks before any sweet goes in a keto basket. One: the carbohydrate total per 100 g and per portion. Two: the of which polyols line, and which polyols the ingredients list names, since your convention may treat them differently. Three: the of which sugars line, where a genuine sugar free product sits at or under 0.5 g. Four: the portion size the numbers describe, because a whole bag eaten in one sitting is several label portions at once. That last check matters twice over with polyols: packs over 10 percent polyols carry the standard note that excessive consumption may produce laxative effects, so a few pieces at a time is the sensible pace anyway.

What sweet things can you eat on keto?

More than you might expect, if you shop by the carbohydrate line. Whole foods first: raspberries carry 5.1 g of carbohydrate per 100 g, double cream 1.7 g and plain Greek style yoghurt 4.8 g in the government's CoFID food composition tables. Berries and cream is a sweet course with the arithmetic already done.

Shop bought, the useful categories are sugar free chocolate, polyol sweetened boiled sweets and toffees, sugar free gelatine desserts and sugar free chewing gum. Each prints carbohydrate, of which sugars and of which polyols per 100 g, usually with a portion column. Read the portion column, apply your plan's polyol convention and the decision is made.

Can you eat chocolate on keto?

Two lines settle it: carbohydrate and of which polyols. Our 80% dark chocolate prints 26 g carbohydrate per 100 g, of which 20 g polyols and 1.1 g sugars. It contains naturally occurring sugars from the cocoa and nothing added, sweetened with maltitol and a trace of steviol glycosides. The pack's portion is 25 g, so divide by four.

Our No Added Sugar Dark Chocolate (85 g) prints 47 g carbohydrate per 100 g, of which 42 g polyols and 0.5 g sugars, plus 8.1 g fibre. The gap between the bars is ingredient order: cocoa paste leads the 80% bar, sweetener leads the 85 g one. Whether you subtract all, half or none of the polyol figure is your plan's call, not ours. Run it on the printed numbers.

Can you have jelly on keto?

Sugar free jelly made up with water is about as low as sweet food gets. The CoFID tables list it at trace carbohydrate and 6 kcal per 100 g. Diabetes UK's snack list puts a 115 g pot at 1.2 g of carbohydrate and 8 calories. Gelatine is protein, the sweeteners are intense sweeteners in tiny doses and the rest is water.

The words sugar free on the box matter: standard jelly made with water carries 15.1 g of sugars per 100 g in the same tables. Fruit or juice set into it brings its own sugars. Jelly sweets are a different food, gelatine or pectin set with sugar or with polyols, so they go by the carbohydrate and polyol lines like any other sweet.

Keto lollies and hard sweets: what is isomalt?

Isomalt is a polyol made from sucrose, ordinary sugar, in a two step process. UK labelling law counts it at 2.4 kcal per gram against sugar's 4 (Annex XIV of the food information regulation). A 2021 review in the Journal of Food and Drug Analysis puts its sweetness at 45 to 65 percent of sugar's, so hard sweets built on it usually carry an intense sweetener too. On the label it sits inside the carbohydrate total and under of which polyols.

Our Sugar Free Strawberry and Cream Sweets show how an isomalt label reads: 87.4 g carbohydrate per 100 g, of which 0.5 g sugars and 86.8 g polyols. Any lolly sold as keto prints the same three lines, so check whether isomalt leads its ingredients list and read it the same way. Polyols are absorbed slowly and only in part, which is exactly why the glucose rise after them is lower than after sugar. The GB register's authorised sentence:

Are standard chocolate sweets keto friendly?

For any standard sugar sweetened chocolate sweet the answer sits on one line: of which sugars. The question usually arrives typed as "are m&ms keto friendly". Plain milk chocolate carries 56 g of carbohydrate per 100 g in the CoFID tables, every gram of it sugars, and a crisp sugar shell is sugar by definition. There is no polyol line to argue over: the sugars figure is the carbohydrate figure whatever convention you follow. Polyol sweets carry theirs on the of which polyols line instead, and that comparison sorts the shelf.

See every label in the Sugar Free range

Frequently asked questions

Does sugar free mean low carb?

No. Sugar free is a legal claim about sugars only, no more than 0.5 g per 100 g. The carbohydrate total can still be substantial because polyol sweeteners count within it, on their own labelled line. The two lines answer two different questions.

Do polyols count as carbs on a UK label?

Yes. Polyols sit inside the carbohydrate total and get their own of which polyols line beneath it. UK law assigns polyols such as maltitol and isomalt 2.4 calories per gram against sugar's 4, with erythritol the zero calorie exception, reflecting their slow and partial absorption.

Why do keto plans disagree about subtracting polyols?

Because polyols are absorbed to different degrees and the research sits between the extremes. Some plans subtract the full polyol figure from total carbohydrate, others subtract half except for erythritol and the cautious subtract nothing. The label gives the same honest numbers whichever convention you follow.