How many grams is 1 ounce?

1 ounce (oz) equals 28.35 grams. This is the avoirdupois ounce used in everyday cooking and baking. There are 16 ounces in 1 pound (lb), and 1 pound equals 453.6 grams.

How many grams is 4 ounces?

4 ounces equals 113.4 grams. This is a very common measurement in American recipes — a standard block of cream cheese is 8 oz (226.8g), and recipes often call for half a block, which is 4 oz.

How many grams is 8 ounces?

8 ounces equals 226.8 grams, which is also equal to half a pound. A standard US stick of butter is 4 oz (113.4g), so 8 oz is two sticks of butter.

What is the difference between ounces and fluid ounces?

Ounces (oz) measure weight. Fluid ounces (fl oz) measure volume. They are completely different units. 1 fl oz of water happens to weigh approximately 1 oz, but 1 fl oz of honey weighs about 1.5 oz because honey is denser. Never substitute one for the other when following a recipe.

How many grams is 6 oz of chocolate?

6 ounces of chocolate equals 170 grams. This is a very common measurement in American brownie and cookie recipes. Many US chocolate bar sizes are based on ounce weights — a standard baking chocolate bar is often 4 oz (113g).

How many ounces in a pound?

There are 16 ounces in 1 pound. 1 pound equals 453.6 grams, or approximately 454g. Half a pound (8 oz) is 226.8g, and a quarter pound (4 oz) is 113.4g.

Are UK and US ounces the same?

Yes — the avoirdupois ounce used for food in both the UK and US is identical: 28.35 grams. However, UK and US fluid ounces differ slightly: 1 US fl oz = 29.57ml, while 1 UK (imperial) fl oz = 28.41ml. For weight-based recipes, there is no difference.

How do I convert ounces to grams without a calculator?

A quick mental shortcut: multiply ounces by 28 for a close approximation (exact is 28.35). For common amounts: 2 oz ≈ 57g, 4 oz ≈ 113g, 8 oz ≈ 227g, 16 oz (1 lb) ≈ 454g. For baking, use exact values — small errors in weight compound across a recipe.

Ounces to Grams.
And what fluid ounces actually means.

1 oz = 28.35g. Simple enough — until a recipe says "fl oz" and everything changes. Weight ounces and fluid ounces are completely different units, and confusing them is one of the most common mistakes when converting American recipes.

oz to g Converter Weight vs Fluid Oz Explained US Recipe Conversion Common Amounts Table

🍫

1 oz

28g

chocolate square

🧀

4 oz

113g

½ cream cheese

🧈

4 oz

113g

1 stick butter

🍫

6 oz

170g

brownie chocolate

🧀

8 oz

227g

full cream cheese

⚖️

16 oz

454g

1 pound (lb)

Ounces to Grams Converter

Enter the number of ounces — get the gram equivalent instantly.

Ounces (oz)

Ingredient (optional)

Enter an amount above to see the result

This converter uses weight ounces (oz), not fluid ounces (fl oz). See the gotchas section below if your recipe uses fl oz.

The Amounts You'll Actually See

American recipes cluster around these ounce amounts. Memorise these and you'll rarely need a calculator.

1 oz

28.35g

1 square baking chocolate

2 oz

56.7g

Small chocolate bar

3 oz

85g

Standard meat portion

4 oz

113.4g

1 stick butter / ½ block cream cheese

6 oz

170g

Brownie/cookie chocolate

8 oz

226.8g

½ lb / 1 block cream cheese

12 oz

340g

¾ lb / bag of chocolate chips

16 oz

453.6g

1 pound (lb)

Quick-Glance Reference

Common baking ingredients — how much does 1 oz actually look like?

Got a whole American recipe to convert?

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The Gotchas

Three things that trip up bakers converting ounce-based recipes.

⚠️ Weight Ounces vs Fluid Ounces — Completely Different Units

1 oz

Weight — 28.35g

≠

1 fl oz

Volume — 29.57ml

Weight ounces (oz) measure mass — how heavy something is. Fluid ounces (fl oz) measure volume — how much space something takes up.

For water they're nearly identical: 1 fl oz of water weighs approximately 1 oz. But for anything denser or lighter than water, they diverge. 1 fl oz of honey weighs about 1.5 oz because honey is much denser than water.

When a recipe says "4 oz cream cheese" — that's weight. When it says "4 fl oz milk" — that's volume (approximately 118ml). Always check which type of ounce your recipe is using.

⚠️ UK vs US Fluid Ounces — Not the Same Volume

1 US fl oz

29.57ml

≠

1 UK fl oz

28.41ml

Weight ounces are identical in the UK and US. But fluid ounces differ slightly — the US fl oz is about 4% larger than the imperial (UK) fl oz.

For most recipes this difference is negligible, but it adds up in large quantities. 8 US fl oz (1 US cup) = 236.6ml, while 8 UK fl oz = 227.3ml. If you're following a US recipe with fl oz and you're in the UK, stick with the ml conversion rather than the fl oz number.

💡 The Mental Maths Shortcut

Exact: multiply oz × 28.35

Quick approximation: multiply oz × 28 — accurate to within 1.25% which is fine for most cooking (not ideal for precision baking).

Even quicker: oz × 30 — overshoots by about 6%, good enough for seasoning and rough estimates but not for baking.

For pounds to grams: multiply lb × 454 — or just multiply lb × 16 to get ounces first, then × 28.35.

💡 Avoirdupois vs Troy Ounces

All cooking and baking uses avoirdupois ounces (28.35g). You will never encounter the other type in a recipe.

Troy ounces (31.1g) are used exclusively for precious metals — gold, silver, platinum. If you've ever seen a gold price quoted in "oz", that's troy ounces. Food recipes always mean avoirdupois. You don't need to think about this unless you're buying bullion.

Full Conversion Tables

Search any ingredient, or browse by category. All conversions use exact weight ounces (1 oz = 28.35g).

Flours & Starches

Ingredient	1 oz	2 oz	4 oz	8 oz	16 oz
Plain flour (all-purpose)	28g	57g	113g	227g	454g
Strong flour (bread flour)	28g	57g	113g	227g	454g
Self-raising flour	28g	57g	113g	227g	454g
Wholemeal flour	28g	57g	113g	227g	454g
Almond flour	28g	57g	113g	227g	454g
Cornflour (cornstarch)	28g	57g	113g	227g	454g
Oat flour	28g	57g	113g	227g	454g

Sugars & Sweeteners

Ingredient	1 oz	2 oz	4 oz	8 oz	16 oz
Caster sugar (granulated)	28g	57g	113g	227g	454g
Icing sugar (powdered)	28g	57g	113g	227g	454g
Soft brown sugar	28g	57g	113g	227g	454g
Honey	28g	57g	113g	227g	454g
Maple syrup	28g	57g	113g	227g	454g
Golden syrup	28g	57g	113g	227g	454g

Butter, Chocolate & Dairy

Ingredient	1 oz	2 oz	4 oz	8 oz	16 oz
Butter	28g	57g	113g	227g	454g
Dark chocolate	28g	57g	113g	227g	454g
Milk chocolate	28g	57g	113g	227g	454g
White chocolate	28g	57g	113g	227g	454g
Cream cheese	28g	57g	113g	227g	454g
Soured cream	28g	57g	113g	227g	454g
Mascarpone	28g	57g	113g	227g	454g

Nuts, Seeds & Dried Fruit

Ingredient	1 oz	2 oz	4 oz	8 oz	16 oz
Walnuts (shelled)	28g	57g	113g	227g	454g
Pecans (shelled)	28g	57g	113g	227g	454g
Almonds (whole)	28g	57g	113g	227g	454g
Ground almonds	28g	57g	113g	227g	454g
Raisins	28g	57g	113g	227g	454g
Dried cranberries	28g	57g	113g	227g	454g
Desiccated coconut	28g	57g	113g	227g	454g

Got a whole recipe in ounces to convert?

Stop converting one ingredient at a time. Paste or photograph your American recipe and RecipeScan converts every measurement — ounces, cups, tablespoons, and Fahrenheit — all at once. First 5 scans free.

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Ounces to Grams.And what fluid ounces actually means.

Ounces to Grams Converter

The Amounts You'll Actually See

Quick-Glance Reference

Got a whole American recipe to convert?

The Gotchas

Full Conversion Tables

Got a whole recipe in ounces to convert?

More Converters

Ounces to Grams.
And what fluid ounces actually means.