Did McDonald's Quarter Pounder, Double Quarter Pounder and McChicken buns (Australia) shrink?

Size FactsDid it shrink? Yes
Before4.5 inch bun
After4 inch bun
−11.1%smaller
Price per item · if the price stayed the same+12.5%Hypothetical: the size cut alone. The source recorded no shelf prices.

How big a cut? The 8th-largest of 10 documented fast food & restaurants cuts; a bigger cut than 42% of all 1,366 cases in the library. See the biggest cuts →

When
2009 · reported 10 Dec 2009
Country
Australia
Brand
McDonald's
Category
Fast Food & Restaurants
Source
smh.com.au

Source and evidence

The Sydney Morning Herald logo smh.com.au

Source fetched 2026-10-20.

McDonald's Australia cut each burger's price by 5 cents and said it was matching its biggest overseas markets.

Evidence
Typecompany-confirmed (newspaper report)
Confidencehigh

Check the math in the calculator.

What the source says

“…"I admit I eat way too much of it, but suddenly I was getting these small buns in more than one store," he said. McDonald's has confirmed the buns have been shrunk from a 4.5-inch bun (11.43 cm) to a 4-inch bun (10.16 cm).”

More from Australia: the Australia shrinkflation list has all 33 documented cases, sortable and filterable.

Topic guide: fast food and restaurant shrinkflation, every documented case in one place, brand by brand.

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ShrinkRadar, “Did McDonald's Quarter Pounder, Double Quarter Pounder and McChicken buns (Australia) shrink? 4.5 inch bun → 4 inch bun”, https://shrinkradar.com/cases/mcdonald-s-quarter-pounder-double-quarter-pounder-and-mcchicken-buns-australia-a.html, accessed 2026-11-05. Original source: The Sydney Morning Herald logo (https://www.smh.com.au/national/mcdonalds-in-bun-fight-over-burger-shrinkage-20091210-kl91.html).

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