How do I convert ounces to grams in cooking?

1 fluid ounce (volume) = 29.574 ml. 1 troy ounce (weight) = 31.1 g. 1 avoirdupois ounce (the standard cooking weight) = 28.35 g. 16 oz = 1 pound = 453.6 g. So: 4 oz ≈ 113 g; 8 oz ≈ 227 g; 12 oz ≈ 340 g. Note that fluid ounces measure volume, not weight - 1 fl oz of water = 28.35 g, but 1 fl oz of honey weighs about 42 g due to higher density.

What is a gas mark and how does it convert to Celsius or Fahrenheit?

Gas mark is a UK oven temperature scale. Gas mark 1 ≈ 140°C / 275°F (very cool). Gas mark 4 ≈ 180°C / 350°F (moderate). Gas mark 6 ≈ 200°C / 400°F (hot). Gas mark 9 ≈ 240°C / 475°F (very hot). Most modern gas mark scales run from 1 to 9. If you have a UK recipe with a Gas mark, use this converter to find the equivalent Celsius or Fahrenheit temperature.

What is the difference between a dry cup and a liquid cup?

In the US measurement system, 1 dry cup and 1 liquid cup are both 236.6 ml - the volume is the same. The difference is practical: liquid measuring cups have a pour spout and markings up to the top for easy filling; dry measuring cups are meant to be overfilled and levelled off. Using a liquid measuring cup for dry ingredients (or vice versa) can introduce errors, especially for sticky or light ingredients.

How do I convert a recipe from US measurements to metric?

Key conversions: 1 cup → 237 ml or 240 ml; 1 tablespoon → 15 ml; 1 teaspoon → 5 ml; 1 oz → 28 g; 1 lb → 454 g; 350°F → 180°C. For serious baking, convert by weight (grams) rather than volume (ml) - it is more accurate and consistent. Most professional recipes use weight. A kitchen scale removes all ambiguity from ingredient measurement.

Cooking Unit Converter

Q: How many millilitres are in one cup?

1 US legal cup = 240 ml. 1 US customary cup = 236.588 ml (often rounded to 236.6 ml or simply 237 ml). The metric cup used in Australia and Canada = 250 ml. Most US recipes use the customary cup (≈237 ml), while Australian recipes use 250 ml - this difference can matter in baking. This calculator uses the US customary cup (236.6 ml) by default.

Q: How do I convert tablespoons to millilitres?

1 US tablespoon = 14.787 ml (about 15 ml for practical purposes). 1 UK/Australian tablespoon = 15 ml exactly. 3 teaspoons = 1 tablespoon. 16 tablespoons = 1 cup. So 4 tablespoons = 1/4 cup ≈ 59.1 ml. For recipes, rounding to 15 ml per tablespoon introduces less than 1.5% error, which is acceptable for most cooking but may affect delicate baking recipes.

Q: How do I convert Fahrenheit to Celsius for oven temperatures?

Formula: °C = (°F − 32) × 5/9. Common oven conversions: 325°F = 163°C (moderate/Gas 3); 350°F = 177°C (moderate/Gas 4); 375°F = 190°C (moderate-hot/Gas 5); 400°F = 204°C (hot/Gas 6); 425°F = 218°C (hot/Gas 7); 450°F = 232°C (very hot/Gas 8). For fan-forced (convection) ovens, reduce the temperature by 20°C (or 25°F).

Q: How do I convert cups of flour to grams?

The weight of 1 cup depends on the ingredient and how it is measured. All-purpose flour (spooned and levelled): 1 cup ≈ 125 g. Bread flour: 1 cup ≈ 130 g. Cake flour: 1 cup ≈ 100 g. Self-raising flour: 1 cup ≈ 125 g. Note: scooping flour directly from the bag compacts it, giving up to 150–160 g per cup - this is a major source of baking failures. Always spoon flour into the cup and level off.

Q: How many teaspoons are in a tablespoon?

3 teaspoons = 1 tablespoon, universally in US, UK, and metric systems. 48 teaspoons = 1 cup. 1 teaspoon = 5 ml (metric standard). These are among the most consistent conversions in cooking. However, a 'dessertspoon' (used in UK/AU) = 2 teaspoons = 10 ml - not a standard US measure, so watch for it in older British recipes.

Q: How many cups are in a pint, quart, and gallon?

US: 1 pint = 2 cups = 473 ml; 1 quart = 4 cups = 946 ml; 1 gallon = 16 cups = 3.785 litres. UK (imperial): 1 UK pint = 2.4 US cups = 568 ml (20 fl oz) - noticeably larger than the US pint. When using a British recipe that calls for pints, use the UK conversion (568 ml), not the US (473 ml). This is a common source of error in international recipe conversions.

Instantly convert cups, tablespoons, teaspoons, ml, ounces, grams, Fahrenheit, and Celsius for any recipe.

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🍳 What is a Cooking Unit Converter?

A cooking unit converter translates measurements between the volume, weight, and temperature units used in recipes from different culinary traditions. A recipe from a US cookbook might call for 2 cups of flour; a British recipe might use grams; a French recipe might specify millilitres. Converting accurately between these systems is essential for recipe success, especially in baking where precise measurements make the difference between a perfect cake and a dense brick.

Volume measurements vary significantly between countries. The US cup (236.6 ml) differs from the Australian and Canadian metric cup (250 ml) - a difference of about 5.7% that can affect baked goods. The UK tablespoon (15 ml) matches the metric tablespoon, while the US tablespoon is slightly smaller (14.787 ml). Pints are dramatically different: the US pint is 473 ml, while the UK imperial pint is 568 ml - 20% larger. When adapting recipes across borders, these distinctions matter.

Temperature conversion is particularly important for oven settings. Most US recipes give temperatures in Fahrenheit; most European recipes use Celsius; UK recipes often use Gas marks. A 350°F oven is 177°C or Gas mark 4 - the standard "moderate" baking temperature. For fan-forced (convection) ovens, subtract 20°C or 25°F from the stated temperature, as forced air circulation distributes heat more efficiently.

This converter handles all three domains: volume (cups, tablespoons, teaspoons, ml, litres, fluid ounces, pints, quarts, gallons), weight (grams, kilograms, ounces, pounds), and temperature (Fahrenheit, Celsius, Gas mark). Use the tabs to switch between conversion types.

📐 Key Conversion Factors

Volume — Base Unit: millilitre (ml)

1 US Cup = 236.588 ml | 1 Tablespoon = 14.787 ml | 1 Teaspoon = 4.929 ml

1 Fluid Oz = 29.574 ml | 1 US Pint = 473.2 ml | 1 US Quart = 946.4 ml

1 US Gallon = 3,785 ml | 1 Litre = 1,000 ml

Quick ref: 3 tsp = 1 tbsp; 16 tbsp = 1 cup; 2 cups = 1 pint; 4 cups = 1 quart

Temperature Conversions

°C to °F: (°C × 9/5) + 32

°F to °C: (°F − 32) × 5/9

Gas Mark to °C: Gas mark × 14 + 121 (approximate)

Key values: 160°C = 325°F = Gas 3 | 180°C = 350°F = Gas 4 | 200°C = 400°F = Gas 6

📖 How to Use This Calculator

Steps

Choose a tab - Volume for cups/ml/tbsp, Weight for grams/ounces, Temperature for °F/°C/Gas mark.

Enter the amount and select the unit you are converting from in the drop-down.

Select the target unit you want to convert to, then click Convert to see the result.

💡 Example Conversions

Example 1 — Cups to Millilitres (Volume)

A US recipe calls for 2½ cups of milk. How many ml is that?

1 US cup = 236.588 ml.

2.5 cups × 236.588 ml = 591.5 ml.

2.5 cups = 591.5 ml

Try this example →

Example 2 — Ounces to Grams (Weight)

A recipe needs 6 oz of dark chocolate. What is that in grams?

1 avoirdupois ounce = 28.3495 g.

6 oz × 28.3495 = 170.1 g.

6 oz = 170.1 g

Try this example →

Example 3 — Fahrenheit to Celsius (Temperature)

A US recipe says bake at 375°F. What Celsius setting should you use?

°C = (375 − 32) × 5/9 = 343 × 5/9 = 190.6°C.

Gas mark ≈ 5 (moderate-hot).

375°F = 190°C = Gas Mark 5

Try this example →

❓ Frequently Asked Questions

How many millilitres are in one cup?+

1 US customary cup = 236.588 ml (often rounded to 237 ml). 1 US legal cup (used in nutrition labelling) = 240 ml. 1 Australian/Canadian metric cup = 250 ml. Most US recipes use the customary cup. The difference between 237 ml and 250 ml (about 5.5%) matters in baking - use the correct value for your recipe's origin. This calculator uses 236.588 ml as the US cup.

How do I convert tablespoons to millilitres?+

1 US tablespoon = 14.787 ml (about 15 ml). 1 metric or UK/Australian tablespoon = exactly 15 ml. 3 teaspoons = 1 tablespoon. 16 tablespoons = 1 US cup (≈237 ml). For most cooking, rounding to 15 ml per tablespoon is fine - it introduces less than 1.5% error. For precise baking, weigh ingredients in grams.

How do I convert ounces to grams for cooking?+

1 avoirdupois ounce (the standard cooking weight) = 28.3495 g. So: 2 oz = 56.7 g; 4 oz = 113.4 g; 8 oz = 226.8 g; 16 oz = 1 lb = 453.6 g. Do not confuse with fluid ounces (volume): 1 US fluid oz = 29.574 ml. For water, 1 fl oz ≈ 29.57 g (since water's density is 1 g/ml); for heavier liquids like honey, 1 fl oz weighs more.

How do I convert Fahrenheit to Celsius for baking?+

°C = (°F − 32) × 5/9. Common baking temperatures: 325°F = 163°C (slow/Gas 3); 350°F = 177°C (moderate/Gas 4); 375°F = 191°C (moderate-hot/Gas 5); 400°F = 204°C (hot/Gas 6); 425°F = 218°C (hot/Gas 7). For convection (fan) ovens, reduce by 20°C or 25°F since forced air distributes heat more efficiently.

What is a Gas Mark and how do I convert it?+

Gas mark is a UK oven temperature scale. Gas 1 ≈ 140°C/275°F (very cool); Gas 4 ≈ 180°C/350°F (moderate); Gas 6 ≈ 200°C/400°F (hot); Gas 9 ≈ 240°C/475°F (very hot). To convert Gas mark to °C: multiply by 14 and add 121. To convert to °F: multiply by 25 and add 225. Gas marks run 1–9 for standard cooking, with marks S (slow oven) below Gas 1.

How do I convert cups of flour to grams?+

Cup-to-gram conversions depend on the ingredient and packing method: plain flour (spooned) ≈ 125 g/cup; bread flour ≈ 130 g/cup; cake flour ≈ 100 g/cup; sugar (granulated) ≈ 200 g/cup; brown sugar (packed) ≈ 220 g/cup; butter ≈ 227 g/cup; rice ≈ 185 g/cup. Scooping compacts flour - a scooped cup can weigh 150–160 g. Spooning and levelling is the correct technique for US volume measurements.

How many teaspoons are in a tablespoon?+

3 teaspoons = 1 tablespoon, universally (US, UK, metric). 1 teaspoon = 5 ml; 1 tablespoon = 15 ml (metric); 48 teaspoons = 1 cup. A "dessertspoon" sometimes used in UK/Australian recipes = 2 teaspoons = 10 ml. There is no standard "dessertspoon" in US cooking - if you encounter it in a British recipe, use 2 teaspoons as the equivalent.

How do cups differ between the US and UK/Australia?+

US cup = 236.6 ml. Australian and Canadian metric cup = 250 ml - about 5.7% larger. UK does not have a traditional cup measure; modern UK recipes often use grams. If you follow a US recipe using a metric cup, you will use slightly more of each ingredient - harmless for most dishes, but may affect delicate baking ratios. When in doubt, convert to grams using the weight of the specific ingredient.

How many cups are in a pint, quart, and gallon?+

US: 1 pint = 2 cups; 1 quart = 4 cups; 1 gallon = 16 cups. UK (imperial): 1 UK pint = 2.4 US cups (568 ml vs 473 ml). The US pint is 20% smaller than the UK pint - a critical difference when adapting British recipes. Both systems agree on quart and gallon subdivisions within their respective pint definitions, but the absolute volumes differ significantly.

Why is weighing ingredients better than measuring by volume?+

Volume measurements are affected by how tightly an ingredient is packed, its moisture content, and the measuring cup size. A cup of flour can weigh anywhere from 110 g (sifted) to 160 g (scooped directly) - a 45% difference. A kitchen scale gives the same result every time regardless of technique. Professional bakers and pastry chefs universally use weight (grams) for precision and consistency.

Tags: Cooking Unit Converter Cups to Ml Tablespoons to Grams Recipe Converter Fahrenheit to Celsius Calculator Free Kitchen Measurements

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📌 Quick Tips

💡1 US cup = 236.6 ml. 1 metric cup (Australia/Canada) = 250 ml - always check your recipe's origin.

💡Tablespoon sizes vary: US = 14.8 ml, UK/AU = 15 ml, metric = 15 ml. For precision, use grams instead.

💡Butter conversions: 1 US stick = 8 tablespoons = 113 g = 4 oz.

💡To convert °F to °C: subtract 32, then multiply by 5/9. For °C to °F: multiply by 9/5, then add 32.

💡For baking, weighing ingredients in grams is far more accurate than using volume (cups) because density varies.