Conversions: U.S. Standard To Metric

Bookmark this handy Imperial to Metric chart for quick conversions from cups to millimeters and vice versa. 

By Allrecipes Editorial Team
Updated on March 20, 2022
bread loaf pans and measuring cups
Photo: Iain Bagwell/Getty Images

In kitchens across the United States, when measuring ingredients for a recipe, it's typically in teaspoons, tablespoons, and cups. These units are part of the Imperial measurement system, which is the standard in America. However, the rest of the world measures things in metrics.

The Metric system, also known as the International System of Units, is a decimal-based system that uses meter, liter, and gram as units of length, capacity, and weight or mass.

Understanding Imperial to Metric equivalents can be helpful when using international recipes or for more precise measurements, especially when baking. This chart will help with the basic U.S. Standard to Metric conversions for cups to millimeters.

U.S. Standard to Metric Conversions

Abbreviation Key

tsp = teaspoon
tbsp = tablespoon
ml = milliliter

Quick Conversions

U.S. Standard Metric

(1 tbsp = 15 ml)
1/4 tsp 1.25 ml
1/2 tsp 2.5 ml
3/4 tsp 3.75 ml
1 tsp 5 ml
1 tbsp 15 ml
1/4 cup 60 ml
1/3 cup 75 ml
1/2 cup 100 ml and 1 tbsp
2/3 cup 150 ml
3/4 cup 175 ml
1 cup 200 ml and 2 tbsp
1 1/4 cup 300 ml
1 1/3 cup 300 ml and 1 tbsp
1 1/2 cup 350 ml
1 2/3 cup 375 ml and 1 tbsp
1 3/4 cup 400 ml and 1 tbsp
2 cups 475 ml
2 1/4 cups 500 ml and 2 tbsp
2 1/3 cups 550 ml
2 1/2 cups 600 ml
2 2/3 cups 600 ml and 2 tbsp
2 3/4 cups 650 ml
3 cups 700 ml and 1 tbsp
3 1/4 cups 775 ml
3 1/3 cups 800 ml
3 1/2 cups 800 ml and 2 tbsp
3 2/3 cups 850 ml and 1 tbsp
3 3/4 cups 875 ml
4 cups 950 ml
4 1/4 cups 1000 ml
4 1/3 cups 1000 ml and 2 tbsp
4 1/2 cups 1050 ml and 1 tbsp
4 2/3 cups 1100 ml
4 3/4 cups 1125 ml
5 cups 1175 ml and 1 tbsp
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