Australian to UK Cups Converter

The modern UK metric cup is 250ml — exactly the same as the Australian cup — so for volume the conversion is 1:1 (2 Australian cups = 2 UK metric cups). Only the old UK imperial cup is different at 284.13ml (10 fl oz, half an imperial pint); against that, 1 Australian cup is about 0.88 imperial cups. Select your UK cup standard above to see the matching figure.

An Australian (metric) cup is 250ml, while a US cup is 240ml (the US legal cup used on nutrition labels). The difference is about 4%, which is small for most recipes but can matter when baking at scale. For a single cup of flour, the difference is roughly 5 grams.

Modern UK recipes mostly use kitchen scales and grams, but when a cup is quoted it almost always means the 250ml metric cup (the same as Australia and New Zealand). The old UK imperial cup of 284.13ml (half an imperial pint) is now rarely seen. There is no UK cup of 240ml — that is the US cup. Always check which standard a recipe uses.

Australian tablespoons are 20ml, not 15ml like UK and US tablespoons. This is a 33% difference and very important when following Australian recipes — for example, an Australian recipe asking for 2 tablespoons (40ml) needs nearly 3 UK tablespoons. Teaspoons are the standard 5ml everywhere, including Australia.

For wet ingredients like water or milk, 10ml per cup is unlikely to matter. But for dry ingredients at scale — say, 5 cups of flour — the difference is 50ml, which could be around 25g of flour. For precision baking, it is worth adjusting. Note this 10ml gap is the Australian (250ml) versus US (240ml) cup; the Australian and modern UK metric cups are identical.

The Australian cup is 250ml (a metric cup), while the US legal cup is 240ml. The precise US customary cup is 236.59ml — this is not an "imperial" measure, it is the older US customary value, and the 240ml legal cup is the one normally used today. The difference between Australian and US cups is about 4%, which can matter in baking. Australian tablespoons are also different — 20ml versus 15ml in the UK and US.