Speights Ultra Low Carb: Calories, Carbs & Keto Friendliness

When you’re watching your carb intake, finding a beer that fits the bill can feel like a treasure hunt. Speight’s Summit Ultra is one of those finds — a crisp lager that promises 75% less carbs than the average New Zealand beer.

Carb reduction vs average NZ beer: 75% less ·
Typical carbs per 100ml: 0.6g (approx) ·
Keto-friendly threshold: <1g carbs per serving ·
Michelob Ultra carbs per 12oz: 2.6g ·
Speight’s Summit Ultra availability: 12-packs, 24-packs, bottles, cans

The table below rounds up the essential specs for Speight’s Summit Ultra and its main rival.

How many calories are in Speight’s ultra low‑carb?

One of the first questions anyone on a low‑carb diet asks is: what’s the calorie and carb trade‑off? Speight’s Summit Ultra positions itself as a clear answer for New Zealand drinkers.

Speight’s Summit Ultra Low Carb nutrition facts

According to Speight’s official website (New Zealand’s brewing company), Summit Ultra is “brewed for longer” to deliver a crisp finish with 75% less carbs than the average carb content of leading NZ beer brands. The exact carb count per 100ml is not published on the product page, but independent estimates place it at about 0.6g per 100ml. That would translate to roughly 1.98g of carbs in a standard 330ml bottle. The calorie count per 330ml is not stated by Speight’s; unofficial estimates suggest around 89 calories, but this figure should be treated as approximate until confirmed by the brewer.

Where to buy Speight’s Ultra Low Carb

The beer is available across New Zealand in 12‑packs and 24‑packs, in both bottles and cans. Major supermarket chains and liquor stores stock it. For Australian or international readers, availability is limited; it’s currently a New Zealand‑only product. (Speight’s official site)

If you’re in New Zealand and wondering about serving sizes, see our guide on how many ml in a pint — it helps when comparing local versus international beer volumes.

How many carbs in Speight’s Ultra Low Carb?

Based on the “75% less than average” claim and typical carb content of NZ lagers (around 2.4g per 100ml), Summit Ultra would contain roughly 0.6g per 100ml. That makes it one of the lowest‑carb beers on the New Zealand market. For reference, a standard serving (330ml) would provide under 2g of carbs — well within keto limits. (New World NZ (grocery retailer’s beer guide))

The implication: Speight’s Summit Ultra clears the keto bar easily, but the lack of transparent nutritional labelling means you’re trusting the “75% less” claim rather than a printed nutrition panel.

Can I drink Michelob Ultra on a low‑carb diet?

Michelob Ultra is the most visible low‑carb beer in the US market, so it’s natural to ask whether it fits a low‑carb lifestyle.

Michelob Ultra sugar and carb content

Michelob Ultra is a 4.2% ABV light lager with 95 calories and 2.6 grams of carbohydrates per 12‑ounce serving, according to Michelob Ultra’s official site (Anheuser‑Busch brand). VinePair (drink publication) confirms the same figures and notes that the beer has very low sugar content. It’s often included in low‑carb beer roundups because its carbs are below 3g per serving. (Men’s Health (men’s lifestyle magazine))

Michelob Ultra vs Speight’s Ultra for low‑carb dieters

When comparing the two, serving sizes differ: Michelob’s 12 oz (355ml) vs Speight’s 330ml (a bit smaller). On a per‑100ml basis, Michelob Ultra has about 0.73g carbs, while Speight’s is roughly 0.6g. So Speight’s is slightly lower in carb density. However, Michelob Ultra offers transparent nutrition facts, which gives it an edge for label‑conscious consumers. VinePair also notes that Michelob Ultra has fewer calories than Bud Light (110 cal) and slightly fewer than Miller Lite (96 cal).

What this means: If you live in New Zealand and want the lowest possible carbs per sip, Speight’s Summit Ultra has an edge — but you’ll need to accept less nutritional transparency. If you’re in the US, Michelob Ultra is the safe, well‑documented bet.

For those exploring Auckland’s food and drink scene, Long Bay Surf Club serves beachside pints where you can compare low‑carb options in person.

Which light beer is lowest in carbs?

Beyond these two contenders, the low‑carb beer field is crowded. We looked at the options that consistently appear in credible roundups.

Top 5 low‑carb beers for keto dieters

Several publications publish yearly lists. Men’s Health (fitness and nutrition magazine) uses a cutoff of less than 4g carbs per serving. Sporked (food‑review site) uses fewer than 5g. The consensus top five often includes:

• Michelob Ultra – 2.6g carbs, 95 cal (Michelob official)
• Speight’s Summit Ultra – ~1.98g carbs, ~89 cal (estimated from Speight’s official site)
• Budweiser Select 55 – 1.9g carbs, 55 cal (common knowledge, but no official source provided in research)
• Miller Lite – 3.2g carbs, 96 cal (VinePair notes Miller Lite has 96 cal; carb figure widely cited)
• Coors Light – 5g carbs, 102 cal (common figure, but not directly sourced here)

Craft low‑carb beer options

For those who want more flavour, craft breweries have joined the low‑carb trend. Dogfish Head Slightly Mighty (3.6g carbs) and Lagunitas DayTime IPA (3g carbs) are frequently mentioned in craft low‑carb lists. However, neither is widely available in New Zealand. (Sporked)

The pattern: mainstream light lagers dominate the very‑low‑carb category because they start with a simpler grain bill. Speight’s Summit Ultra holds its own at the low end of the spectrum.

Here’s how the ultra‑low‑carb options stack up head‑to‑head.

What Alcohol Can You Drink On Keto?

Beer isn’t the only option, but for many it’s the one they miss most. Understanding what “keto‑friendly” means in the alcohol aisle helps you make smarter choices.

Keto‑friendly beer characteristics

Generally, a beer is considered keto‑friendly if it contains less than 1g of carbs per serving, though many people stretch that to under 5g. The keto diet typically limits total carbs to 20–50g per day. Speight’s Summit Ultra, with under 2g per bottle, fits comfortably. (Mission Meats (keto‑focused blog))

Are ultra‑light beers keto‑friendly?

Most ultra‑light beers — Michelob Ultra, Speight’s Summit Ultra, Budweiser Select 55 — fall below 3g carbs per serving. Men’s Health notes that its low‑carb list includes only beers with fewer than 4g carbs. So yes, these beers are generally acceptable on a standard keto diet, provided you account for the carbs.

Speight’s Ultra Low Carb on a keto diet

With an estimated 1.98g carbs per 330ml bottle, Speight’s Summit Ultra uses up a small fraction of your daily carb allowance. That makes it one of the most keto‑friendly mass‑market beers available in New Zealand. New World NZ (grocery chain’s beer guide) notes that the “Ultra” name has become shorthand for low‑carb beer, confirming the market positioning.

Why this matters: If you’re on keto and you want a beer that won’t blow your macros, Speight’s Summit Ultra is a solid local choice. But remember, alcohol itself contains calories — and those count on any diet.

Which is worse for belly fat, beer or wine?

A common concern among dieters is where alcohol fits in weight management — especially the stubborn belly fat that often comes with regular beer drinking.

Calories in beer vs wine

A standard 5‑ounce glass of wine (red or white) contains about 120–125 calories and roughly 3–4g of carbs. A typical 12‑oz beer like Bud Light has 110 calories and 6.6g carbs. But low‑carb beers change the equation. Michelob Ultra, with 95 calories and 2.6g carbs, is actually lower in both than most wines. Speight’s Summit Ultra is estimated at ~89 calories per 330ml bottle — even lower. (VinePair)

Impact of alcohol on weight loss

The body metabolises alcohol differently than carbohydrate; it pauses fat burning until the alcohol is processed. So regardless of beer or wine, any alcohol can slow weight loss. However, low‑carb beers reduce the carb load, which helps avoid the insulin spike that encourages fat storage. Mission Meats summarises: “A low‑carb beer can still contain alcohol calories even when carbohydrate counts are reduced.”

The takeaway: For belly‑fat concerns, it’s the total calories and alcohol that matter most. A low‑carb beer like Speight’s Ultra is a better choice than a standard lager, but it’s not a free pass.

Pros and cons of choosing Speight’s Summit Ultra for keto

What people are saying: quotes from brewers and experts

“Summit Ultra is a refreshing golden lager with a crisp finish. Brewed for longer it has 75% less carbs than the average carb content of leading NZ beer brands.”

— Speight’s official website (New Zealand brewing company)

“Ultra has become shorthand for low carbohydrate beer.”

— New World NZ (grocery retailer’s beer guide)

“We looked for light beers with less than 4 grams of carbs [when compiling our low‑carb beer guide].”

— Men’s Health (men’s lifestyle magazine)

For those watching carbs, comparing Speights Ultra Low Carb with other options on the market can be helpful, and our guide to the best low carb beers in New Zealand provides a full rundown of supermarket finds.

Frequently asked questions

For New Zealand keto dieters, the choice is clear: Speight’s Summit Ultra delivers on its low‑carb promise, but the lack of full nutritional transparency leaves a small doubt. For everyone else, Michelob Ultra remains the safer, more documented option. Either way, you can enjoy a beer without derailing your diet — just don’t forget that alcohol calories still count.