Cooking Conversion Reference

U.S. Customary ↔ Metric • Approximate values commonly used in recipes • For precision baking, use a scale

Volume (Capacity) Conversions

U.S. → Metric

U.S. Unit	Metric Equivalent
1/8 teaspoon	0.6 ml
1/4 teaspoon	1.2 ml
⅓ teaspoon (approx.)	1.7 ml
½ teaspoon	2.5 ml
¾ teaspoon	3.7 ml
1 teaspoon (tsp)	5 ml
1 tablespoon (tbsp)	15 ml
2 tablespoons	30 ml (1 fl oz)
1 fluid ounce (fl oz)	30 ml
2 fl oz	60 ml
¼ cup (4 tbsp / 2 fl oz)	60 ml
⅓ cup	80 ml
⅜ cup (6 tbsp)	90 ml
½ cup (8 tbsp / 4 fl oz)	120 ml
⅔ cup	160 ml
¾ cup (12 tbsp)	180 ml
1 cup (16 tbsp / 8 fl oz)	240 ml
1 pint (2 cups)	480 ml
1 quart (4 cups / 2 pints)	950 ml (0.95 liter)
1 gallon (4 quarts)	3.8 liters

Related: Tablespoon to milliliters.

Common Metric → U.S. (round numbers)

Metric	U.S. Approximate
100 ml	3.4 fl oz
250 ml	≈ 1 cup + 2 tsp (≈ 8.5 fl oz)
500 ml	≈ 2.1 cups
1 liter	≈ 4.2 cups / 2.1 pints / 1.06 quarts / 0.26 gallon

Related: Milliliters to Fluid Ounces.

Weight Conversions

U.S. → Metric

U.S. Unit	Metric Equivalent
0.035 oz	1 g
1 oz	28 g
2 oz	57 g
3 oz	85 g
4 oz (¼ lb)	113 g
½ lb	227 g
¾ lb (12 oz)	340 g
1 lb	454 g
2 lb	907 g (≈ 0.9 kg)

Related: Ounces to grams.

Ounces to pounds.

Common Metric → U.S.

Metric	U.S. Approximate
100 g	3.5 oz
500 g	1.1 lb
1 kg	2.2 lb (≈ 35 oz)

Kilograms to pounds converter

U.S. Volume Equivalents

Measurement	Equivalent
3 teaspoons	1 tablespoon
1 tablespoon	3 teaspoons
4 tablespoons	¼ cup
5 tablespoons + 1 teaspoon	⅓ cup
8 tablespoons	½ cup
10 tablespoons + 2 teaspoons	⅔ cup
12 tablespoons	¾ cup
16 tablespoons	1 cup
48 teaspoons	1 cup
2 cups	1 pint
2 pints	1 quart
4 quarts	1 gallon

Related: How Many Teaspoons in a Tablespoon.

Ingredient Weights (approx. 1 cup unless noted)

Butter

1 tablespoon → 14 g
1 stick (½ cup / 8 tbsp / 4 oz) → 113 g
1 cup → 226 g

Sugar

Granulated / caster → 200 g
Brown (packed) → 220 g
Confectioners' (icing) → 120-125 g
Raw / turbinado → 250 g

Flour (varies by brand • 120-135 g common)

All-purpose → 120-130 g (many use 125 g)
Bread flour → 127-135 g
Whole wheat → 120-128 g
1 tablespoon flour → 8-9 g

Other Common Ingredients

Honey: 1 cup → 340 g | 1 tbsp → 21 g
Salt: 1 tsp → ≈ 5.7-6 g
Instant dry yeast: 2¼ tsp (1 packet) → 7 g
Cornstarch: 1 cup → 150 g
Heavy cream: 1 cup → 240 g
Rolled oats: 1 cup → ≈ 90 g
Uncooked white rice: 1 cup → ≈ 185-200 g

Related: Grams to Cups.

Oven Temperature Conversions

Fahrenheit	Celsius	Gas Mark
250°F	120°C	½
275°F	135°C	1
300°F	150°C	2
325°F	165°C	3
350°F	175°C	4
375°F	190°C	5
400°F	205°C	6
425°F	220°C	7
450°F	235°C	8
475°F	245°C	9
500°F	260°C	—

For convection/fan ovens, reduce temperature by ≈25°F (15°C).

Related: Fahrenheit to Celsius .