Per 100g, root beer runs 41 calories and 11g of carbs. Macro-friendly enough for daily use.
Calories scale with portion. Here's how a typical root beer serving translates in your tracker:
Very low calorie — at 41 kcal per 100g, root beer adds volume to a meal without meaningfully denting a calorie deficit.
How root beer stacks up on calories and protein against foods people commonly compare it to:
Point your iPhone camera at root beer and Spotwell's on-device AI estimates the portion and macros in under a second — no manual entry, no barcode hunting.
Download on theApp StoreRoot Beer has approximately 41 calories per 100g. A typical serving — 3 oz (85g) — comes in at 35 calories.
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.
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 under a second. Adjust the value if it looks off.
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.