How many calories in
walnuts?
Walnuts are the calorie-densest common nut at 654 per 100g, with 65g of fat — most of it omega-3. A 1 oz handful is around 185 calories. Even small handfuls add up fast, but they bring nutrient density that other oils don't.
Common serving sizes.
Calories scale with portion. Here's how a typical walnuts serving translates in your tracker:
What 654 calories means.
Calorie-dense and fatty — 65 g of fat per 100g means small portions add up fast, so weigh it rather than eyeballing.
Skip the lookup. Snap the plate.
Point your iPhone camera at walnuts 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 walnuts?
Walnuts has approximately 654 calories per 100g. A typical serving — 1 oz (14 halves, 28g) — comes in at 185 calories.
How much protein is in walnuts?
15g of protein per 100g. That puts walnuts at roughly 2.3g of protein per 100 calories — a useful lens when comparing to other nuts & seeds sources.
How do I log walnuts 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 walnuts good for weight loss?
It depends on your overall calorie target. Walnuts is calorie-dense at 654 kcal per 100g, so portion control matters more than with low-cal foods.