How many calories in
root beer?
Per 100g, root beer runs 41 calories and 11g of carbs. Macro-friendly enough for daily use.
Common serving sizes.
Calories scale with portion. Here's how a typical root beer serving translates in your tracker:
What 41 calories means.
Very low calorie — at 41 kcal per 100g, root beer adds volume to a meal without meaningfully denting a calorie deficit.
Root Beer vs. similar foods.
How root beer stacks up on calories and protein against foods people commonly compare it to:
Skip the lookup. Snap the plate.
Point your iPhone camera at root beer and Spotwell's AI estimates the portion and macros in a few seconds. Check it, adjust anything that looks off, and log it.
Download on theApp StoreQuick answers.
How many calories in root beer?
Root Beer has approximately 41 calories per 100g. A typical serving — 3 oz (85g) — comes in at 35 calories.
How much protein is in root beer?
0g of protein per 100g. That puts root beer at roughly 0.0g of protein per 100 calories — a useful lens when comparing to other beverages sources.
How do I log root beer accurately?
The simplest method: weigh it on a kitchen scale, then enter grams in your tracker. With Spotwell, you can skip the scale — point the camera at the plate and the AI estimates the portion in a few seconds. Adjust the value if it looks off.
Is root beer good for weight loss?
It depends on your overall calorie target. Root Beer is naturally low-calorie at 41 kcal per 100g, so it's easy to fit into a deficit.