Convert Ounces to Grams
Enter weight in ounces to convert to grams. Perfect for converting American recipes to UK metric measurements.
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grams (g)
Rounded: 0g for cooking
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Convert Grams to Ounces
Enter weight in grams to convert to ounces. Useful when following UK recipes that need to be converted to American measurements.
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ounces (oz)
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Batch Converter
Convert multiple values at once. Enter one value per line. Prefix with "g" for grams or "oz" for ounces.
Recipe Scaler
Scale recipe quantities up or down. Great for adjusting American recipes for UK serving sizes.
Common Ounces to Grams Conversions
Quick reference for the most common cooking conversions used in UK kitchens.
| Ounces | Grams (exact) | Grams (rounded) | Common Use |
|---|---|---|---|
| 1 oz | 28.35g | 28g or 30g | Small portion, 1 slice cheese |
| 2 oz | 56.70g | 55g or 60g | Cheese portion, small handful nuts |
| 3 oz | 85.05g | 85g | Serving of meat/fish |
| 4 oz (1/4 lb) | 113.40g | 110g or 115g | US butter stick, small portion |
| 5 oz | 141.75g | 140g | Yogurt pot size |
| 6 oz | 170.10g | 170g or 175g | Medium portion |
| 7 oz | 198.45g | 200g | ~200g metric |
| 8 oz (1/2 lb) | 226.80g | 225g or 230g | Half pound, 2 US butter sticks |
| 10 oz | 283.50g | 280g or 285g | - |
| 12 oz (3/4 lb) | 340.19g | 340g or 350g | Three-quarter pound |
| 14 oz | 396.89g | 400g | Standard UK tin size |
| 16 oz (1 lb) | 453.59g | 450g or 454g | One pound |
Grams to Ounces Quick Reference
Common metric weights used in UK recipes with their imperial equivalents.
| Grams | Ounces (exact) | Ounces (rounded) | Pounds & Ounces |
|---|---|---|---|
| 25g | 0.88 oz | ~1 oz | - |
| 50g | 1.76 oz | ~2 oz | - |
| 75g | 2.65 oz | ~2.5 oz | - |
| 100g | 3.53 oz | ~3.5 oz | - |
| 125g | 4.41 oz | ~4.5 oz | - |
| 150g | 5.29 oz | ~5.25 oz | - |
| 175g | 6.17 oz | ~6 oz | - |
| 200g | 7.05 oz | ~7 oz | - |
| 225g | 7.94 oz | ~8 oz | 1/2 lb |
| 250g | 8.82 oz | ~9 oz | - |
| 350g | 12.35 oz | ~12 oz | 3/4 lb |
| 450g | 15.87 oz | ~16 oz | 1 lb |
| 500g | 17.64 oz | ~17.5 oz | 1 lb 1.5 oz |
| 1000g (1 kg) | 35.27 oz | ~35.25 oz | 2 lb 3.25 oz |
Common UK Baking Ingredient Weights
Different ingredients have different densities, so cup measurements vary. Always weigh ingredients for accuracy.
Butter & Fats
- 1 US stick butter = 113g (4 oz)
- 1 cup butter = 227g (8 oz)
- 1 tbsp butter = 14g (0.5 oz)
- 1 cup vegetable oil = 224g
- 1 cup lard = 205g
Flour
- 1 cup plain flour = 125g (4.4 oz)
- 1 cup self-raising = 125g (4.4 oz)
- 1 cup bread flour = 127g
- 1 cup wholemeal = 120g
- 1 cup cornflour = 128g
Sugars
- 1 cup caster sugar = 200g (7 oz)
- 1 cup granulated = 200g (7 oz)
- 1 cup brown sugar = 220g (packed)
- 1 cup icing sugar = 120g (4.2 oz)
- 1 cup demerara = 220g
Dairy
- 1 cup milk = 240ml (8.5 fl oz)
- 1 cup cream = 240ml
- 1 cup yogurt = 245g
- 1 cup cream cheese = 225g
- 1 cup sour cream = 240g
Liquids & Syrups
- 1 cup honey = 340g (12 oz)
- 1 cup golden syrup = 340g
- 1 cup maple syrup = 315g
- 1 cup treacle = 340g
- 1 cup water = 237ml
Nuts & Seeds
- 1 cup almonds (whole) = 145g
- 1 cup ground almonds = 110g
- 1 cup walnuts = 120g
- 1 cup pecans = 110g
- 1 cup desiccated coconut = 85g
Conversion Formulas
Ounces to Grams
Grams = Ounces x 28.3495
Example: 8 oz x 28.35 = 226.8g (round to 225g)
Grams to Ounces
Ounces = Grams / 28.3495
Example: 250g / 28.35 = 8.82 oz (round to 9 oz)
Quick Mental Maths
1 oz ~ 30g (rough)
100g ~ 3.5 oz
100g ~ 3.5 oz
For quick estimates, multiply oz by 30 or divide grams by 30.
Troy Ounces vs Cooking Ounces
There are two types of ounces you may encounter:
Avoirdupois Ounces (Cooking)
1 oz = 28.3495 grams
- Used for cooking and baking
- Used in UK/US everyday weighing
- 16 oz = 1 pound
- This converter uses avoirdupois
Troy Ounces (Precious Metals)
1 troy oz = 31.1035 grams
- Used for gold, silver, platinum
- Used in jewellery and bullion
- 12 troy oz = 1 troy pound
- NOT for cooking conversions
Weight Ounces vs Fluid Ounces
Don't confuse weight ounces (oz) with fluid ounces (fl oz) - they measure different things!
| Measurement | What It Measures | Value | Used For |
|---|---|---|---|
| 1 oz (weight) | Mass/Weight | 28.35 grams | Dry ingredients, butter, cheese |
| 1 UK fl oz (volume) | Volume | 28.41 ml | Liquids in UK recipes |
| 1 US fl oz (volume) | Volume | 29.57 ml | Liquids in American recipes |
| 1 UK cup | Volume | 284 ml (10 fl oz) | Older UK recipes (rarely used) |
| 1 US cup | Volume | 237 ml (8 fl oz) | American recipes |
UK Baking Tip
For liquids, the weight in grams is approximately equal to the volume in millilitres (1ml water ~ 1g). For dry ingredients, always weigh in grams using digital scales - never use cup measures for accuracy!
Frequently Asked Questions
How many grams in an ounce for UK cooking?
1 ounce (oz) equals 28.3495 grams. For UK cooking and baking, this is typically rounded to 28g or 30g depending on the precision needed. This is the avoirdupois ounce used in everyday cooking - troy ounces (31.1g) are only used for precious metals and are NOT suitable for recipe conversions.
What is 8 oz in grams for baking?
8 ounces equals 226.8 grams, typically rounded to 225g or 230g in UK recipes. 8 oz is half a pound (1/2 lb) and is a very common measurement in American baking recipes, equivalent to 2 US sticks of butter. This is a standard measurement for many cake and cookie recipes.
How do I convert American recipes to UK measurements?
American recipes use cups and ounces while UK recipes use grams and millilitres. To convert: multiply ounces by 28.35 for grams. For cups, you must weigh ingredients as cup weights vary by ingredient. For example: 1 cup flour = 125g, 1 cup sugar = 200g, 1 cup butter = 227g. UK kitchens should always use digital scales for baking accuracy.
What is the difference between oz and fl oz in recipes?
Oz (ounces) measures weight/mass, while fl oz (fluid ounces) measures volume. In the UK: 1 oz = 28.35g weight, 1 UK fl oz = 28.41ml volume. Note that US fl oz is different at 29.57ml. For dry ingredients like flour and sugar, always use weight measurements (oz/grams). For liquids, use fluid ounces or millilitres.
What is 4 oz in grams?
4 ounces equals 113.4 grams, typically rounded to 110g or 115g in UK cooking. 4 oz is equivalent to 1/4 pound and is exactly the size of one American stick of butter. This is a common measurement in American recipes for butter, margarine, and shortening.
What is 14 oz in grams (standard tin size)?
14 ounces equals 396.9 grams, typically rounded to 400g. This is the standard size of many UK tins including condensed milk, chopped tomatoes, and beans. Many American canned goods are also 14-15 oz, making this a very common conversion for recipe adaptation.
How many ounces in 100 grams?
100 grams equals 3.53 ounces. This is a very common metric measurement in UK recipes. For a rough conversion, think of 100g as approximately 3.5 oz. Conversely, 1 oz is about 28g, so 100g is slightly more than 3.5 oz.
Why should I weigh ingredients instead of using cups?
Cup measurements are inconsistent because different ingredients have different densities. 1 cup of flour weighs about 125g, but 1 cup of sugar weighs 200g. Even the same ingredient can vary based on how it's packed. Professional UK bakers always use scales because weighing is more accurate, leading to consistent results every time.