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Conversion Charts

By Cook's Illustrated Published January 2009

Guidelines for converting weights and measures.

Some say cooking is a science and an art. We would say that geography has a hand in it, too. Flour milled in the United Kingdom and elsewhere will feel and taste different from flour milled in the United States. So, while we cannot promise that the loaf of bread you bake in Canada or England will taste the same as a loaf baked in the States, we can offer guidelines for converting weights and measures. We also recommend that you rely on your instincts when making our recipes. Refer to the visual cues provided. If the bread dough hasn’t “come together in a ball,” as described, you may need to add more flour—­even if the recipe doesn’t tell you so. You be the judge.

Our recipes are all developed using standard U.S. measures following U.S. government guidelines. The charts below offer equivalents for U.S., metric, and Imperial (U.K.) measures. All conversions are approximate and have been rounded up or down to the nearest whole number. For example:

1 teaspoon = 4.929 milliliters, rounded up to 5 milliliters 1 ounce = 28.349 grams, rounded down to 28 grams

VOLUME CONVERSIONS

U.S. METRIC
1 teaspoon 5 milliliters
2 teaspoons 10 milliliters
1 tablespoon 15 milliliters
2 tablespoons 30 milliliters
1/4 cup 59 milliliters
1/3 cup 79 milliliters
1/2 cup 118 milliliters
3/4 cup 177 milliliters
1 cup 237 milliliters
1 1/4 cups 296 milliliters
1 1/2 cups 355 milliliters
2 cups 473 milliliters
2 1/2 cups 592 milliliters
3 cups 710 milliliters
4 cups (1 quart) .946 liter
1.06 quarts 1 liter
4 quarts (1 gallon) 3.8 liters

WEIGHT CONVERSIONS

OUNCES GRAMS
1/2 14
3/4 21
1 28
1 1/2 43
2 57
2 1/2 71
3 85
3 1/2 99
4 113
4 1/2 128
5 142
6 170
7 198
8 227
9 255
10 283
12 340
16 (1 pound) 454