Diet Coke contains 0 g of sugar per 100 ml, based on the product’s UK nutrition label.
Shoppers ask this all the time because nutrition panels swap between “per 100 ml” and “per serving.” Here’s the clear answer, plus context to help you compare cans, bottles, and similar colas at a glance today.
Quick Answer And Why It Matters
Per 100 ml, Diet Coke has 0 g sugars, 0 g carbs, and about 0.4 kcal. That figure comes straight from the official label. It means the drink adds sweetness through high-intensity sweeteners rather than sugar, so the sugar line reads zero while the energy line stays near zero.
Cola Sugar Per 100 Ml: Fast Comparison
Use this table to see how “per 100 ml” stacks up across familiar options. Values come from brand pages in Great Britain, where labels list figures per 100 ml.
| Beverage | Sugar Per 100 ml | Notes |
|---|---|---|
| Diet Coke | 0 g | Sweetened with aspartame & acesulfame K |
| Coca-Cola Zero Sugar | 0 g | Formulated to taste closer to classic Coke |
| Coca-Cola Original Taste | 10.6 g | Standard full-sugar cola |
| Pepsi (UK, current) | 4.55 g | Reformulated recipe with reduced sugar |
| Pepsi Max | 0 g | No sugar, sweeteners used |
| Sprite (GB) | 4.4 g | Reduced sugar recipe; also has a zero variant |
| Sprite Zero (GB) | 0 g | No sugar, sweeteners used |
How Much Sugar In Diet Coke Per 100Ml — Serving Sizes Explained
The “per 100 ml” line is a comparison tool, but bottles and cans are bigger than that. Here’s how the same zero-sugar label plays out across common sizes:
- 250 ml glass: Sugar 0 g; energy about 1 kcal.
- 330 ml can: Sugar 0 g; energy about 1–2 kcal.
- 500 ml bottle: Sugar 0 g; energy about 2 kcal.
Those tiny calorie numbers come from trace ingredients and acids rather than sugar. If your aim is to limit sugar specifically, Diet Coke remains at 0 g sugar whether you sip a mini can or a large bottle.
What’s Actually In Diet Coke?
The ingredient list is short: carbonated water, colour (caramel), phosphoric and citric acids, flavourings, and the sweeteners aspartame and acesulfame K. The label also flags a phenylalanine warning, as aspartame contains phenylalanine and people with PKU must avoid it.
On caffeine, a standard 330 ml can of Diet Coke in Great Britain contains 46 mg. That works out to roughly 14 mg per 100 ml, well below a same-size coffee. If you prefer to skip caffeine altogether, the caffeine-free Diet Coke variant keeps sugar at zero as well.
How Diet Coke Compares To Other Colas
Classic Coca-Cola sits at 10.6 g sugar per 100 ml. Coke Zero Sugar reads 0 g, like Diet Coke, but is blended to taste closer to the original. Pepsi in the UK now lists 4.55 g sugar per 100 ml after its recipe change, while Pepsi Max is zero. These label lines make it simple to weigh taste preference against sugar targets.
Label Literacy: Per 100 Ml Vs Per Serving
Most UK drink labels show both lines. “Per 100 ml” lets you compare across brands. “Per serving” shows what’s in the container you’re drinking. For Diet Coke, both land on the same sugar answer: 0 g. When you’re scanning shelves, check the line that matches the decision you need—comparison or portion.
Health Context: Sweeteners, Safety, And Sugar Goals
Diet Coke uses high-intensity sweeteners rather than sugar. In Great Britain, sweeteners are approved after safety assessment by the Food Standards Agency and EFSA. People with PKU should avoid aspartame due to phenylalanine. For everyone else, the decision often comes down to taste, caffeine preference, and broader diet goals.
If you’re tracking added sugar, public guidance points to keeping intake low across the day. Swapping a full-sugar cola for Diet Coke cuts sugar to zero, which helps the daily tally.
Want the primary sources? See the official Diet Coke nutrition page and the NHS overview on sweeteners and safety.
Ingredient Notes And Taste
Because there’s no sugar, sweetness comes from a tiny amount of aspartame and acesulfame K, which are hundreds of times sweeter than sugar. That’s why the energy line still sits near zero. The flavour blend gives Diet Coke its lighter profile, while Coke Zero Sugar aims for a closer match to original Coke. If you miss the heft of full-sugar cola but want zero sugar, Zero Sugar may taste nearer to the target. If you prefer a crisper, lighter sip, Diet Coke fits.
Smart Swaps Without Guesswork
Set a personal rule for “per 100 ml” sugar on soft drinks. Many shoppers use a 0–2 g range. With that rule, Diet Coke, Coke Zero Sugar, and Pepsi Max pass, while classic Coke and regular Sprite don’t. That single number stops the aisle from feeling like guesswork.
Per-Serving Snapshot For Diet Coke
Here’s a second table that shows the same zero-sugar answer across common servings, alongside energy so you can plan your day.
| Serving Size | Sugar | Energy |
|---|---|---|
| 100 ml | 0 g | ~0.4 kcal |
| 250 ml glass | 0 g | ~1 kcal |
| 330 ml can | 0 g | ~1–2 kcal |
| 500 ml bottle | 0 g | ~2 kcal |
| 1 litre share bottle | 0 g | ~4 kcal |
| 1.25 litre bottle | 0 g | ~5 kcal |
| 2 litre bottle | 0 g | ~8 kcal |
Common Label Pitfalls To Avoid
Brand sites and cans sometimes present figures in slightly different ways. One page might spotlight “per 330 ml,” while the pack front shows “per 100 ml.” Both are correct; they answer different questions. When you want a like-for-like comparison, stick with per 100 ml. When you want to know what you just drank, use the serving line.
Watch flavours, too. Lime, cherry, or vanilla versions may vary a touch on energy or sodium. In Great Britain, the sugar line for Diet Coke flavours still reads 0 g per 100 ml.
International Labels And Small Differences
Recipes can vary by region. The headline answer—0 g sugar per 100 ml—holds for Diet Coke in Great Britain. Always check the can or bottle locally before buying anything.
Switching From Sugary Cola: What Changes
Swap a can of classic Coke for a can of Diet Coke and you remove roughly 35–39 g sugar per can in US terms, or 10.6 g per 100 ml in Great Britain terms. Over a week that saves a fair chunk of sugar if cola is a daily habit. Many people notice the taste shift at first; by week two it usually feels normal. Keep cans cold, pour over ice, and add lemon if you want brighter aroma.
Diet Coke vs Zero Sugar: Picking Your Match
Both options are sugar-free per 100 ml. The difference is flavour design. Diet Coke carries a lighter profile; Zero Sugar aims to mimic original Coke more closely. If you’re after a cleaner sip, stick to Diet Coke.
How We Verified The Numbers (With Sources)
We checked brand pages for Great Britain: the Diet Coke nutrition page lists 0 g sugars per 100 ml, energy 1.6 kJ (0.4 kcal). Coca-Cola Original Taste shows 10.6 g sugars per 100 ml. Sprite lists 4.4 g sugars per 100 ml, while Sprite Zero lists 0 g. Pepsi’s UK FAQ states 4.55 g sugars per 100 ml for classic Pepsi and confirms Pepsi Max is zero sugar. A Coca-Cola GB FAQ puts a 330 ml Diet Coke can at 46 mg caffeine. These match the ingredient lists and the way sweeteners work.
Who Should Skip Aspartame?
People with PKU need to avoid phenylalanine, which means skipping products sweetened with aspartame. For everyone else, UK guidance says approved sweeteners have passed safety checks. If you prefer to avoid them, reach for water, flavoured seltzer, or an occasional full-sugar drink in a smaller portion.
Troubleshooting Taste
If Diet Coke tastes too sharp, chill it well and pour into a wider glass to soften bubbles. If it tastes too light, test Coke Zero Sugar, which keeps the zero-sugar label while nudging flavour closer to the original. If caffeine is an issue, the caffeine-free Diet Coke variant carries the same 0 g sugar per 100 ml figure.
Direct Answer One More Time
Just to answer the search the way you typed it—how much sugar in diet coke per 100ml— the number is 0 g. That’s what the label says, and that’s what you get in the glass.
Answering The Exact Search
If you came here typing “how much sugar in diet coke per 100ml”, the short version is this: the label reads 0 g per 100 ml. If you saw different numbers elsewhere, they were probably for classic Coke, another cola, or a different measure like grams per can.
Takeaway
Per 100 ml, Diet Coke is sugar-free. That doesn’t make it a substitute for water, but if your goal is to cut added sugar from soft drinks, it does the job while keeping calories near zero. The rest is taste, caffeine choice, and what fits your day.