Costa Americano UK Price & Calories 2026
I grabbed an Americano from a Costa inside a retail park between two errands, just wanting something straightforward while juggling shopping bags. The seating area was packed, so I took it away and didn’t hang around. An Americano is Costa Coffee’s leanest, boldest hot drink — straight espresso with hot water, nothing else. The cup felt light, and it was ready in under a minute, which is always a plus when you’re in a rush.
Prices start at £3.45 for a Small and go up to £4.25 for a Large, with three sizes in total. Calories are low across the board: 12 kcal in Small, 18 kcal in Medium, and 23 kcal in Large. There are no listed allergens in the standard black Americano. If you want a strong, no-nonsense coffee that won’t hit your calorie count or wallet too hard, keep reading.
Source: Official Costa Database
| Nutrient | Per 100g | Standard (340ml) |
|---|---|---|
| Energy (kcal) | 5 | 18 |
| Energy (kJ) | 22 | 74 |
| Carbs (g) | 0.9 | 3 |
| Fat (g) | 0 | 0.2 |
| Saturates (g) | 0 | 0.1 |
| Protein (g) | 0 | 1.2 |
| Salt (g) | 0.02 | 0.08 |
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Key Points on Americano Strength and Calorie Control
The price of a Costa Americano usually starts around £3.45 for a small cup and goes up to roughly £4.25 for a large, depending on the store. Calories stay very low across all sizes, ranging from about 12 kcal for a small to around 23 kcal for a large cup. Even though the portion size increases from 280 ml to 480 ml, the drink still remains one of the lightest coffee options on the Costa menu.
- Small Americano: £3.45, 12 kcal, 280 ml
- Medium Americano: £3.85, 18 kcal, 340 ml
- Large Americano: £4.25, 23 kcal, 480 ml
- Large costs 80p more than Small — for 200 ml extra
- Calories only go up by 11 from Small to Large
- No allergens listed in the standard Americano
- Extra espresso shot is the priciest add-on at +£0.80
Small vs Medium: which one is actually worth it?
If you’re choosing between Small and Medium for your Costa Americano, here’s the simple answer: Medium is the right size for most people. You pay 40p more than Small (£3.85 vs £3.45) and get 60 ml extra, with just 6 more kcal (18 vs 12). That’s barely a crumb of a biscuit in calorie terms. The Small is best if you want the lowest price and don’t need much volume — maybe you’re in a hurry or just want a quick hit. The Large jumps to £4.25, which is 80p more than Small, but you get a hefty 480 ml. Unless you really want a long drink or plan to sit with it for a while, Large isn’t great value for most people. For most UK coffee shop visits, Medium hits the sweet spot: enough coffee to last but not so much you’re left with a half-cold cup. Americano small vs medium — Medium wins for value and practicality.
Americano calories and sugar — the actual numbers
Americano calories are low: 12 kcal in Small, 18 kcal in Medium, and 23 kcal in Large. That means even the biggest size has fewer calories than half a digestive biscuit. For comparison, a standard Costa Latte is around 150 kcal in Medium. If you’re watching calories, this is about as lean as coffee gets on the Costa menu.
There’s no sugar in any size of Americano. Fat is almost non-existent too — 0.1 g in Small, 0.2 g in Medium and Large. This is as close as you’ll get to a zero-calorie hot drink in a UK coffee shop. An Americano is just espresso and water, which is why the numbers stay so low even as you go up in size.
| Size | Portion (ml) | Energy (kcal) | Energy (kJ) | Sugar (g) | Fat (g) | Saturates (g) | Carbs (g) | Protein (g) | Salt (g) |
|---|---|---|---|---|---|---|---|---|---|
| Small | 280 | 12 | 49 | 0 | 0.1 | 0.1 | 1.9 | 0.8 | 0.06 |
| Medium | 340 | 18 | 74 | 0 | 0.2 | 0.1 | 3 | 1.2 | 0.08 |
| Large | 480 | 23 | 97 | 0 | 0.2 | 0.1 | 3.7 | 1.6 | 0.12 |
Source: Official Costa Database
Extras you can add — and what they cost
You can customise your Costa Americano with extras and syrups, but these are all price-only add-ons. An extra espresso shot costs +£0.80, while whipped cream is +£0.60, and marshmallows or light whip are +£0.50 each. Syrups like caramel, vanilla, or sugar-free options are +£0.60 per shot. None of these change the listed calories or nutrition unless you start adding things like cream or marshmallows, but Costa doesn’t give the numbers for those here.
For the lowest calories: stick with the standard black Americano. For the full version: add an extra shot or syrup if you want to change up the taste — just know you’ll pay extra for it.
Which size makes sense
Thinking back to that retail park visit, Medium was the right call — easy to carry, not too heavy, and lasted just long enough to get me through the next errand. For most people, Medium Americano is the best pick: £3.85, 18 kcal, and a good balance between price and portion. If you’re after the absolute lowest calorie option or just want a quick caffeine hit, Small is fine at 12 kcal and £3.45, but it’s over quickly. If you’re planning to sit in or want a long drink, Large gives you 480 ml for £4.25, but it’s more than most people need. The Medium is the size I’d recommend for everyday UK coffee shop stops. The Large is only worth it if you know you’ll finish it before it goes cold.
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Disclaimer
Prices shown are typical UK menu estimates for 2026 and may vary by store location, promotions, delivery services, or eat-in vs takeaway pricing. Nutritional values are based on standard drink configurations and may change depending on size, milk choice, extras, or recipe updates made by the brand.