Tonic Water vs Club Soda: What's the Difference?

Written by Abigail Jolly
July 10, 2024 | Reading time 3 minutes

What's the difference between tonic water vs club soda?

The key differences between tonic water and club soda are taste and ingredients. Tonic water is sweeter whereas club soda is often saltier. However, both beverages share being artificially carbonated.

When selecting a mixer for your favorite cocktail, understanding the distinct characteristics of tonic water and club soda can greatly enhance your drinking experience.

A recent Statista survey reveals that nearly 60% of Americans consume carbonated water, including club soda and tonic water, at least once a week.

Although similar in appearance, these two carbonated beverages offer unique flavors that can significantly influence the profile of your drink.

Ingredients in club soda

Club soda is essentially carbonated water infused with added minerals. These minerals typically include:

  • Sodium bicarbonate
  • Sodium chloride
  • Potassium sulfate
  • Disodium phosphate

The addition of these ingredients not only enhances the flavor but also provides a slight effervescence, making club soda a refreshing beverage on its own or as a mixer in cocktails.

If you're looking for more information, we further investigate the ingredients found in club soda in our in-depth article on the difference between club soda and sparkling water.

Ingredients in tonic water

Tonic water, unlike club soda, has a distinct flavor profile characterized by a subtle sweetness and bitterness, which is derived from a unique set of ingredients:

  • Carbonated water
  • High fructose corn syrup or sugar
  • Citric acid
  • Natural flavors
  • Quinine
  • Sodium benzoate
  • Sodium citrate

The inclusion of quinine is what imparts the signature bitter taste to tonic water, making it a popular mixer for cocktails like the classic gin and tonic.

For more information on tonic water ingredients, we did a deep dive here on the differences between tonic water and sparkling water.

Related read: Tonic Water vs Mineral Water: What's the Difference?

Club soda vs tonic water calories

When it comes to calorie count, club soda and tonic water differ significantly.

Club soda is a calorie-free beverage, primarily because it consists only of carbonated water and added minerals, which do not contribute any calories. This makes it an ideal mixer for those looking to enjoy a drink without adding extra calories.

On the other hand, tonic water contains added sugars or high fructose corn syrup, which results in a higher calorie content. Typically, an 8-ounce serving of tonic water contains around 80-90 calories.

For individuals mindful of their calorie intake, this makes tonic water a less favorable option compared to club soda.

Can I use tonic water instead of club soda?

While it is possible to use tonic water instead of club soda in certain drinks, this substitution will significantly alter the taste of the final beverage.

The distinct bitterness and sweetness of tonic water, due to the presence of quinine and added sugars, will impart a different flavor profile compared to the neutral, slightly salty taste of club soda.

For example, tonic water might enhance a gin-based cocktail, adding complexity, but it could overwhelm more delicate flavors in other beverages.

Ultimately, whether or not to use tonic water as a substitute for club soda comes down to personal preference and the specific requirements of the drink recipe.


While both tonic water and club soda serve as refreshing beverages and versatile mixers, they differ significantly in ingredients, flavor profiles, and caloric content.

Club soda's neutral taste and zero calories make it ideal for those seeking drinks without added sugars. In contrast, tonic water's distinctive bitterness and sweetness are perfect for specific cocktails like the gin and tonic.

Choosing between the two depends on your flavor preferences and dietary needs. It's like understanding the difference between carbonated water and aerated water, and soda water vs sparkling water–all have their unique differences!

Whether mixing them with spirits, using them in recipes, or enjoying them solo, understanding their differences helps you make the best choice for your needs.

Like what you see? Share with a friend.

Share to Facebook Share to Twitter

Recommended reading

Health 5 min read

What is Alkaline Water?

What is alkaline water? Alkaline water is characterized by its higher pH level compared to regular drinking water. Generally, it has a pH ranging from 8 to 9.5, achieved through natural mineraliza...