Top 10 · Updated October 2026

Lowest-Calorie Root Beers

The 10 lightest root beers products on this list range from 3 to 28 kcal per 100 g. The root beers with the fewest calories per 100 g, so you can compare energy density at a glance. We checked 46 root beers with complete data.

  1. 1 Root beer

    Root beer

    Aldi · 1l
    NOVA 4 3 kcal 0 g sugar 0 g protein 0 g fat

    Also: Palm oil free

  2. 2 XS Root Beer 12oz

    XS Root Beer 12oz

    XS
    b 4 kcal 0 g sugar 0.6 g protein 0 g fat
  3. 3 Root Beer Ancient Mushroom Elixir

    Root Beer Ancient Mushroom Elixir

    Alive · 16 fl oz
    b NOVA 4 6 kcal 1.4 g sugar 0 g protein 0 g fat
  4. 4 Cream Soda

    Cream Soda

    OLIPOP · 12 fl oz
    b NOVA 4 11 kcal 0.6 g sugar 0 g protein 0 g fat

    Also: No additives

  5. 5 Classic Root Beer

    Classic Root Beer

    OLIPOP · 12 Fl oz
    c NOVA 4 11 kcal 0.9 g sugar 0 g protein 0 g fat

    Also: Vegan · Vegetarian · No additives

  6. 6 Caffeine Free Root Beer

    Caffeine Free Root Beer

    food club · 355 ml
    b NOVA 4 14 kcal 3.6 g sugar 0 g protein 0 g fat

    Also: Palm oil free

  7. 7 Root Beer

    Root Beer

    Bundaberg · 375 ml
    d NOVA 4 19 kcal 4.6 g sugar 0 g protein 0 g fat

    Also: Palm oil free

  8. 8 America's premium old fashioned root beer

    America's premium old fashioned root beer

    Dads Root Beer Company Div · 33.8 fl oz (1L)
    c NOVA 4 21 kcal 5 g sugar 0 g protein 0 g fat

    Also: Palm oil free

  9. 9 Traditional Root Ginger Beer

    Traditional Root Ginger Beer

    · 275 ml
    c 25 kcal 5.4 g sugar 1 g protein 0.1 g fat
  10. 10 Kvass Classic

    Kvass Classic

    Alecoq · 2L
    d NOVA 4 28 kcal 6.3 g sugar 0.2 g protein 0 g fat

How we built this list

We ranked all published root beers on Foodmetria that have a photo and the required nutrition data, using values per 100 g from the product label. Ties are broken by Nutri-Score and by how often shoppers scan the product. Rankings update automatically as label data changes. Read our methodology.

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