How Much Does Butter Cost in Australia?
Short answer: on October 19, 2026, Coles Simply Salted Butter 500g cost $7.00 on coles.com.au, which is $14.00 a kilo. The standard 250g block reads at $4.50 in the latest published tracker data for both Coles and Woolworths, which is $18.00 a kilo.
Butter is the clearest size trap in Australian dairy: the block everyone reaches for costs about 29% more per kilo than the bigger block beside it. A transparency note: the tracker reads the unsalted 250g block; a house-brand salted 250g price could not be verified directly today, and we say so rather than blend the two.
The prices we verified
Coles Simply Salted Butter 500g: $7.00 ($14.00/kg), regular price, checked directly on coles.com.au on October 19, 2026.
Unsalted butter 250g (Australian-made): $4.50 at both Coles and Woolworths in the Savings.com.au tracker, September 2026 readings ($18.00/kg). A third-party comparison in early October 2026 put Aldi butter 250g at $3.49 against $4.00 at the majors, though figures there were not item-dated and we could not verify them at Aldi.
What is a good deal on butter?
Our guidance: judge butter per kilo. At or below $14.00/kg, the 500g block rate, you are paying the fair 2026 price. At or below $12.00/kg on special, stock the freezer; butter keeps for months frozen.
The 250g block at $18.00/kg is the convenience rate. It is fine for a household that uses little butter, and expensive for one that bakes.
Why butter prices move
Butter sits in the ABS dairy and related products class, up 3.5% in the year to August 2026. Cream and milk-fat markets set the direction, and the annual dairy figure says those costs are still rising gently.
Pack pricing moves independently of the commodity: the 250g versus 500g per-kilo gap is a retail format decision, not a dairy market signal, which is why it survives in every price environment.
How to pay less for butter
Switch the default block to 500g if you bake or cook with butter weekly. The per-kilo saving is about $4.00 against the 250g rate.
Freeze a spare 500g block when a special breaks $12.00/kg. Butter is the safest freezer stock-up in the dairy aisle.
Check butter against our weekly tracker. We reprice this item every week and watch for the salted 250g direct price to publish.
Butter's trap is the pack, not the price. Track what you actually pay per kilo with free receipt scans, and Premium will flag when your regular items change price.