How many calories in
oysters?
At 81 calories per 100g, oysters delivers 9g of protein and 2.3g of fat. Macros are balanced relative to other protein sources. A typical 4 oz portion lands around 92 calories.
Common serving sizes.
Calories scale with portion. Here's how a typical oysters serving translates in your tracker:
What 81 calories means.
Protein-dense — 11.1 g of protein per 100 kcal makes oysters an efficient choice for hitting a protein target while managing calories.
Skip the lookup. Snap the plate.
Point your iPhone camera at oysters 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 oysters?
Oysters has approximately 81 calories per 100g. A typical serving — 3 oz (85g) — comes in at 69 calories.
How much protein is in oysters?
9g of protein per 100g. That puts oysters at roughly 11.1g of protein per 100 calories — a useful lens when comparing to other protein sources.
How do I log oysters 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 oysters good for weight loss?
It depends on your overall calorie target. Oysters is naturally low-calorie at 81 kcal per 100g, so it's easy to fit into a deficit.