ML to Cups: Convert Millilitres to Cups (With a Free Calculator)

Why Millilitres and Cups Don't Line Up

A cup isn't one fixed size. A US cup is 240 ml, a metric/Australian cup is 250 ml, and an old UK cup is 284 ml — so "1 cup" can mean three different amounts. That's why an American recipe measured in a 250 ml Aussie cup comes out ~4% over.

Millilitres to Cups Conversion Chart

Cups	US (240 ml)	Metric / AU (250 ml)
¼ cup	60 ml	63 ml
⅓ cup	80 ml	83 ml
½ cup	120 ml	125 ml
⅔ cup	160 ml	167 ml
¾ cup	180 ml	188 ml
1 cup	240 ml	250 ml
2 cups	480 ml	500 ml

Quick reference: 250 ml ≈ 1 metric cup (or 1.04 US cups); 500 ml ≈ 2 metric cups.

Which Cup Should You Use?

• US cup — 240 ml (US recipes; the 236.6 ml "customary" cup is usually rounded to 240).
• Metric / Australian cup — 250 ml (most of the world, and AU/NZ).
• UK cup — 284 ml (rare in modern recipes).

If a recipe doesn't say, assume US for American sites and 250 ml for Australian, UK and most international ones. When precision matters — baking especially — weigh in grams instead. Our guide on how to convert cups to grams covers ingredient-by-ingredient weights.

Converting ml to Cups Manually

cups = millilitres ÷ cup size. For a metric cup: 375 ml ÷ 250 = 1½ cups. For a US cup: 375 ml ÷ 240 = 1.56 cups.

Convert a Whole Recipe at Once

KitchenConvert converts volumes, scales servings and turns cups into grams across an entire recipe in one step.

Frequently Asked Questions

How many ml in a cup? A US cup is 240 ml; a metric/Australian cup is 250 ml. Most recipes are fine with either, but the 250 ml cup is ~4% larger — it matters for baking.

How many cups is 250 ml? Exactly 1 metric/Australian cup, or about 1.04 US cups.

Is an Australian cup the same as a US cup? No — an Australian cup is 250 ml vs the US 240 ml.

How do I convert 500 ml to cups? 500 ml is 2 metric cups (250 ml each) or about 2.08 US cups.