Peanut butter is 588 calories per 100g. A standard 2-tbsp serving is around 188 calories with 8g of protein. The biggest source of error in logging is heaping vs level scoops — peanut butter compacts heavily, so a heaping spoon can be 50% more than the label serving.
Calories scale with portion. Here's how a typical peanut butter serving translates in your tracker:
Calorie-dense and fatty — 50 g of fat per 100g means small portions add up fast, so weigh it rather than eyeballing.
How peanut butter stacks up on calories and protein against foods people commonly compare it to:
Point your iPhone camera at peanut butter and Spotwell's on-device AI estimates the portion and macros in under a second — no manual entry, no barcode hunting.
Download on theApp StorePeanut Butter has approximately 588 calories per 100g. A typical serving — 1 tbsp (16g) — comes in at 94 calories.
25g of protein per 100g. That puts peanut butter at roughly 4.3g of protein per 100 calories — a useful lens when comparing to other fats 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. Peanut Butter is calorie-dense at 588 kcal per 100g, so portion control matters more than with low-cal foods.