Butter is essentially pure fat at 717 calories per 100g. A tablespoon is about 100 calories. In tracking, the issue is rarely the spoon you measure; it's the spoon you didn't measure on the pan, the bread, the vegetables. Track every visible pat for accuracy.
Calories scale with portion. Here's how a typical butter serving translates in your tracker:
Calorie-dense and fatty — 81 g of fat per 100g means small portions add up fast, so weigh it rather than eyeballing.
How butter stacks up on calories and protein against foods people commonly compare it to:
Point your iPhone camera at 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 StoreButter has approximately 717 calories per 100g. A typical serving — 1 tbsp (14g) — comes in at 102 calories.
0.9g of protein per 100g. That puts butter at roughly 0.1g 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. Butter is calorie-dense at 717 kcal per 100g, so portion control matters more than with low-cal foods.