Which has less PUFA, butter or vegetable oil?

Butter carries less polyunsaturated fat: an estimated 3% of its fat versus about 55% for vegetable oil, per USDA oil composition data.

How much PUFA is in a tablespoon of butter?

Roughly 0.4g of PUFA per tablespoon, since a tablespoon of oil carries about 14g of fat and butter runs about 3% PUFA.

Oil vs Oil · Butter vs Vegetable Oil

Butter wins on seed oil PUFA: about 3% of its fat versus roughly 55% for Vegetable Oil, around 18x less per spoonful.

Per tablespoon that is an estimated 0.4g of PUFA against 7.5g. Values from USDA oil composition data, method on the methodology page.

Dairy fat, about 3% PUFA. The steakhouse standard for finishing, and what a few breakfast chains still use on the griddle.

Common as a finishing fat; rare as a fryer. See chains cooking in butter or olive oil.

A label term, not a plant: in the US "vegetable oil" is usually soybean oil or a soybean blend, around 55% PUFA.

The generic label on fryers and ingredient lists everywhere. See the distributor oils page.

Or work out any amount with the PUFA calculator.