MeKeto

Keto Drinks Database

Keto Soda Guide: Net Carbs in 30 Sodas and Mixers

Soda is the easiest place on a keto diet to lose a whole day of carbs in one drink. A 12 fl oz can of regular Pepsi lists 41g of carbohydrate, all of it sugar, which is twice a strict 20g daily limit. The zero-sugar versions of the same brands list 0g.

The newer prebiotic sodas sit in between. Olipop, poppi and Pepsi Prebiotic Cola cut the sugar to 3 to 5g a can but still carry real carbohydrate and added fiber, so they land at 3 to 8g net carbs per can. Mixers matter too: tonic water is a sugar drink, while club soda and seltzer are not.

Every figure below comes from the brand’s own nutrition facts (Coca-Cola, PepsiCo, Keurig Dr Pepper, Olipop, Fever-Tree) or from USDA FoodData Central for generic juices. Net carbs are total carbohydrate minus dietary fiber, per the serving listed.

By MeKeto Editorial · Last updated October 2026

Glasses of cola, sparkling water with lemon and tonic water over ice

Lowest-carb picks

  1. Coca-Cola Zero Sugar

    0g

    net carbs per 12 fl oz can

  2. Diet Coke

    0g

    net carbs per 12 fl oz can

  3. Pepsi Zero Sugar

    0g

    net carbs per 12 fl oz can

  4. Diet Pepsi

    0g

    net carbs per 12 fl oz can

  5. Sprite Zero Sugar

    0g

    net carbs per 12 fl oz can

What to know

  • Coke Zero, Diet Coke, Pepsi Zero Sugar, Diet Pepsi, Sprite Zero Sugar, Dr Pepper Zero Sugar, Diet Dr Pepper and Mountain Dew Zero Sugar all list 0g carbohydrate per 12 fl oz.
  • A regular 12 fl oz soda runs from 38g of carbs (Sprite) to 46g (Mountain Dew). A 20 fl oz bottle of Coca-Cola lists 65g.
  • Prebiotic sodas are lower in sugar, not carb-free: Pepsi Prebiotic Cola works out to 3g net, poppi to 6g and Olipop Vintage Cola to 8g per can. Sprite Zero Sugar Prebiotic is the exception at 1g net.
  • Tonic water is the hidden one in mixed drinks. Seagram’s Tonic lists 21g of carbs per 12 fl oz, and Fever-Tree Light Tonic still has 8g per 200 ml. Ask for soda water with lime instead.
  • Plain sparkling water (Topo Chico, bubly, Seagram’s seltzer) and club soda list 0g carbs.
  • For cocktails, 1 fl oz of fresh lime juice is about 2.5g net carbs, while a cup of orange juice is 25.3g and a cup of cranberry juice cocktail is 34.2g.

Net carbs in all 30 drinks

Net carbs are total carbohydrate minus fiber, per the serving shown. Low carb means 3g or less, about 15% of a strict 20g day. Plan for it means up to 7g. Every row links to the brand or USDA page its numbers come from, checked October 2026.

Zero-sugar soda

  • Coca-Cola Zero Sugar0g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource

    Sweetened with aspartame and acesulfame potassium.

  • Diet Coke0g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource

    Sweetened with aspartame.

  • Diet Dr Pepper0g net

    Keurig Dr Pepper · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Diet Pepsi0g net

    PepsiCo · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Dr Pepper Zero Sugar0g net

    Keurig Dr Pepper · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Mountain Dew Zero Sugar0g net

    PepsiCo · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Pepsi Zero Sugar0g net

    PepsiCo · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Sprite Zero Sugar0g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Sprite Zero Sugar Prebiotic1g net

    The Coca-Cola Company · 12 fl oz can · 15 cal · 7g carbs · 6g fiber

    Low carbSource

    The label counts 6g of the 7g of carbohydrate as dietary fiber (soluble corn fiber).

Sparkling water

  • bubly Sparkling Water, Lime0g net

    PepsiCo · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Seagram’s Seltzer Water0g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource
  • Topo Chico Mineral Water0g net

    The Coca-Cola Company · 12 fl oz (355 ml) bottle · 0 cal · 0g carbs

    Low carbSource

Regular soda

  • Pepsi Prebiotic Cola3g net

    PepsiCo · 12 fl oz can · 30 cal · 6g carbs · 3g fiber

    Low carbSource

    Lower sugar, not zero sugar: 5g of sugar per can.

  • Olipop Classic Root Beer (6g fiber)6g net

    Olipop · 12 fl oz (355 ml) can · 35 cal · 12g carbs · 6g fiber

    Plan for itSource
  • poppi Classic Cola6g net

    PepsiCo (poppi) · 12 fl oz can · 35 cal · 9g carbs · 3g fiber

    Plan for itSource

    Prebiotic soda with 5g of sugar per can.

  • poppi Strawberry Lemon6g net

    PepsiCo (poppi) · 12 fl oz can · 30 cal · 9g carbs · 3g fiber

    Plan for itSource
  • Olipop Vintage Cola (9g fiber)8g net

    Olipop · 12 fl oz (355 ml) can · 50 cal · 17g carbs · 9g fiber

    High carbSource

    The refrigerated 9g fiber line; the high fiber offsets much of the carbohydrate, but 8g net is still a planned drink.

  • Sprite38g net

    The Coca-Cola Company · 12 fl oz can · 140 cal · 38g carbs

    High carbSource
  • Dr Pepper40g net

    Keurig Dr Pepper · 12 fl oz can · 150 cal · 40g carbs

    High carbSource
  • Pepsi41g net

    PepsiCo · 12 fl oz can · 150 cal · 41g carbs

    High carbSource
  • Mountain Dew46g net

    PepsiCo · 12 fl oz can · 170 cal · 46g carbs

    High carbSource
  • Coca-Cola Original65g net

    The Coca-Cola Company · 20 fl oz bottle · 240 cal · 65g carbs

    High carbSource

    Coca-Cola’s Original page lists the 20 fl oz bottle; 65g is more than three times a strict 20g day.

Mixers

  • Seagram’s Club Soda0g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 0g carbs

    Low carbSource

    A zero-carb bar mixer: ask for the spirit with club soda and fresh lime.

  • Seagram’s Zero Sugar Ginger Ale1g net

    The Coca-Cola Company · 12 fl oz can · 0 cal · 1g carbs

    Low carbSource
  • Lime juice, fresh2.5g net

    1 fl oz (30.8 g) · 8 cal · 2.6g carbs · 0.1g fiber

    Low carbSource

    USDA raw lime juice scaled to its 1 fl oz portion.

  • Fever-Tree Light Tonic Water8g net

    Fever-Tree · 200 ml (6.8 fl oz) · 30 cal · 8g carbs

    High carbSource

    Published per 200 ml. Light means less sugar, not sugar-free.

  • Seagram’s Tonic Water21g net

    The Coca-Cola Company · 12 fl oz can · 80 cal · 21g carbs

    High carbSource

    Sweetened with high fructose corn syrup; a gin and tonic made with it is not low carb.

  • Orange juice, fresh25.3g net

    1 cup (248 g) · 112 cal · 25.8g carbs · 0.5g fiber

    High carbSource

    USDA raw orange juice scaled to its 1 cup portion.

  • Seagram’s Ginger Ale34g net

    The Coca-Cola Company · 12 fl oz can · 130 cal · 34g carbs

    High carbSource
  • Cranberry juice cocktail34.2g net

    1 cup (8 fl oz, 253 g) · 137 cal · 34.2g carbs

    High carbSource

    USDA bottled cranberry juice cocktail scaled to its 1 cup portion; a splash in a cosmopolitan still adds up.

Frequently asked questions

By its label, yes. Coca-Cola lists 0 calories, 0g total carbohydrate and 0g sugar for a 12 fl oz can of Coca-Cola Zero Sugar, so it adds no net carbs. It is sweetened with aspartame and acesulfame potassium. Diet Coke lists the same 0g of carbohydrate.

The diet and zero-sugar sodas in this table all list 0g of carbohydrate per 12 fl oz: Diet Coke, Coke Zero, Pepsi Zero Sugar, Diet Pepsi, Sprite Zero Sugar, Dr Pepper Zero Sugar, Diet Dr Pepper and Mountain Dew Zero Sugar. They do not count toward a daily carb limit. Check the label on flavored or limited-edition versions, which can differ.

They are lower in sugar than regular soda but not carb-free. A 12 fl oz can of poppi Classic Cola lists 9g of carbohydrate, 3g of fiber and 5g of sugar, or 6g net. Olipop Vintage Cola from the 9g fiber line lists 17g of carbohydrate and 9g of fiber, or 8g net. That is 30 to 40% of a strict 20g day in one can, so treat them as a planned treat rather than an everyday drink.

Regular tonic water is not. Seagram’s Tonic Water lists 21g of carbohydrate and 20g of sugar per 12 fl oz, close to a regular soda. Fever-Tree Light Tonic is lower at 8g per 200 ml, but still sugar-sweetened. For a low-carb highball, ask for club soda or seltzer with fresh lime, which adds about 2.5g net carbs per fl oz of juice.

Plain and naturally flavored sparkling water lists 0g of carbs: Topo Chico Mineral Water, bubly Lime and Seagram’s Seltzer Water all show 0g per 12 fl oz. Watch for sparkling juice drinks and sweetened sparkling waters, which look similar on the shelf but carry sugar.

Club soda and seltzer (0g), zero-sugar ginger ale (Seagram’s lists 1g per can), diet cola and fresh lime or lemon juice are the low-carb options. Regular tonic (21g per can), ginger ale (34g per can), orange juice (25.3g net per cup) and cranberry juice cocktail (34.2g per cup) are the ones to skip or keep to a small splash.

Sources

Nutrition figures link from each row above. Health statements on this page rely on:

  1. U.S. Department of Agriculture, Agricultural Research Service. FoodData Central: SR Legacy (2018) and Food and Nutrient Database for Dietary Studies (FNDDS) 2021-2023. Link
  2. Masood W, Annamaraju P, Khan Suheb MZ, Uppaluri KR. Ketogenic Diet. StatPearls. NIH National Library of Medicine, 2023. Link

Check a label for hidden sugars, or set your own daily carb limit.

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