Cups to Grams Converter UK 2025/26

Last updated: February 2026

Cups to Grams Converter UK 2024

Last verified: 2026-01-12 • Updated for 2026/26 tax year

Convert American cup measurements to grams for UK baking. Essential for following US recipes with precision.

Quick Reference - 1 Cup Equals:

Convert Cups to Grams

Cups:

Ingredient:

125

grams

Grams to Cups Converter

Convert grams back to cups for your ingredient

Grams:

Ingredient:

Result:

Enter grams

Pro Tip: Weighing is More Accurate

Cup measurements can vary by up to 20% depending on how you scoop the ingredient. For consistent baking results, always weigh your ingredients in grams using a digital kitchen scale. A good digital scale costs around £10-15 and will transform your baking.

Common Baking Conversions

Flour (Plain/All-Purpose)

1 tablespoon	8g
1/4 cup	31g
1/3 cup	42g
1/2 cup	63g
2/3 cup	83g
3/4 cup	94g
1 cup	125g
2 cups	250g

Granulated/Caster Sugar

1 tablespoon	12g
1/4 cup	50g
1/3 cup	67g
1/2 cup	100g
2/3 cup	133g
3/4 cup	150g
1 cup	200g
2 cups	400g

Butter

1 tablespoon	14g
1/4 cup (1/2 stick)	57g
1/3 cup	76g
1/2 cup (1 stick)	113g
3/4 cup	170g
1 cup (2 sticks)	227g
UK block (standard)	250g

Brown Sugar (Packed)

1 tablespoon	14g
1/4 cup	55g
1/3 cup	73g
1/2 cup	110g
2/3 cup	147g
3/4 cup	165g
1 cup	220g

Icing Sugar (Powdered)

1 tablespoon	8g
1/4 cup	30g
1/3 cup	40g
1/2 cup	60g
2/3 cup	80g
3/4 cup	90g
1 cup	120g

Liquids

1 tablespoon	15ml
1/4 cup	60ml
1/3 cup	80ml
1/2 cup	120ml
2/3 cup	160ml
3/4 cup	180ml
1 cup	240ml
1 pint (US)	473ml

Cocoa Powder

1 tablespoon	7g
1/4 cup	22g
1/3 cup	30g
1/2 cup	45g
2/3 cup	60g
3/4 cup	67g
1 cup	90g

*Unsweetened Dutch-process cocoa

Other Ingredients

1 cup rolled oats	85g
1 cup rice (uncooked)	185g
1 cup chocolate chips	170g
1 cup chopped nuts	120g
1 cup raisins	150g
1 cup desiccated coconut	85g
1 cup peanut butter	260g

Oven Temperature Conversion

US recipes use Fahrenheit (°F), UK uses Celsius (°C). Here's your quick reference:

Description	Fahrenheit	Celsius	Gas Mark
Very low	250°F	120°C	1/2
Low	275°F	140°C	1
Moderately low	300°F	150°C	2
Moderate	325°F	160°C	3
Moderately hot	350°F	180°C	4
Fairly hot	375°F	190°C	5
Hot	400°F	200°C	6
Very hot	425°F	220°C	7
Very hot	450°F	230°C	8
Extremely hot	475°F	240°C	9

Quick formula: °C = (°F - 32) × 5/9. For fan ovens, reduce temperature by 20°C.

UK vs US Baking Terminology

American recipes use different names for common ingredients. Here's your translation guide:

Flour & Grains

All-purpose flour →Plain flour

Bread flour →Strong flour

Whole wheat flour →Wholemeal flour

Corn starch →Cornflour

Sugar & Sweeteners

Powdered sugar →Icing sugar

Confectioner's sugar →Icing sugar

Superfine sugar →Caster sugar

Corn syrup →Golden syrup (approx)

Molasses →Black treacle

Dairy

Heavy cream →Double cream

Whipping cream →Whipping cream

Light cream →Single cream

Half-and-half →Single cream (approx)

Raising Agents & Other

Baking soda →Bicarbonate of soda

Baking powder →Baking powder

Vanilla extract →Vanilla essence

Cilantro →Fresh coriander

Zucchini →Courgette

Graham crackers →Digestive biscuits

Semisweet chocolate →Dark chocolate

Unsweetened chocolate →100% cocoa chocolate

UK vs US Egg Sizes

Egg sizes differ between UK and US. Most US recipes use "large" eggs. Here's the comparison:

US Size	US Weight	UK Equivalent	UK Weight
Medium	50g	Medium	53-63g
Large	56g	Large	63-73g
Extra-Large	64g	Very Large	73g+

Tip: UK "large" eggs are slightly bigger than US "large". For most recipes, this difference is negligible, but for precise bakes, weigh your eggs without shells.

How to Measure Ingredients Correctly

Measuring Flour (The Spoon & Level Method)

Stir first: Flour settles and compacts in storage. Stir or fluff it with a fork before measuring.
Spoon into cup: Use a spoon to fill the measuring cup - don't scoop directly with the cup.
Level off: Use a knife or straight edge to level the top. Don't shake or tap.

Why it matters: Scooping flour directly can pack 140-150g into a "cup" instead of 125g, making your bakes dry and dense.

Measuring Brown Sugar

Brown sugar should be packed firmly into the measuring cup. Press it down, then level. When you turn it out, it should hold its shape like a sandcastle. This gives you the 220g per cup that recipes expect.

Measuring Liquids

Use a liquid measuring jug (glass or plastic with a pour spout). Place on a flat surface and read at eye level - the meniscus (curved surface) should sit at the measurement line.

Measuring Butter

US recipes often call for "sticks" of butter. 1 stick = 1/2 cup = 113g. In the UK, butter is sold in 250g blocks. For accurate measuring, check the wrapper markings or weigh on a scale.

Best Practice: Use a Digital Scale

For consistent results every time, invest in a digital kitchen scale (£10-15). Place your bowl on the scale, zero it (tare), then add ingredients by weight. This eliminates measuring variations entirely and is how professional bakers work.

Quick Butter Conversion

US recipes use "sticks" and "tablespoons" for butter. UK uses grams. Here's your conversion:

1 tablespoon

= 14g

1/4 cup (4 tbsp)

= 57g

1/2 cup (1 stick)

= 113g

1 cup (2 sticks)

= 227g

Note: UK butter blocks are 250g, so 1 US cup of butter is just under one UK block.

Frequently Asked Questions

How many grams is 1 cup of flour? +

1 US cup of all-purpose flour (plain flour in UK) equals approximately 125 grams. This can vary from 120-130g depending on how the flour is measured - spooning and levelling gives 125g, while scooping directly can pack to 140g. For best accuracy, always weigh your flour. Self-raising flour is similar at about 125g per cup.

How many grams is 1 cup of sugar? +

1 US cup of granulated white sugar equals approximately 200 grams. Caster sugar (finer UK sugar) is also about 200g per cup. Brown sugar is denser at about 220g per cup when packed firmly. Icing sugar (powdered/confectioner's) is lighter at around 120g per cup due to its fine texture.

How many grams is 1 cup of butter? +

1 US cup of butter equals 227 grams (8 oz or 2 US sticks). In UK terms, this is just under a standard 250g block of butter. Half a cup of butter is 113g (1 US stick), and 1 tablespoon of butter is about 14g. US recipes often call for 'sticks' of butter - 1 stick = 113g.

Why do cups to grams vary by ingredient? +

Different ingredients have different densities. A cup measures volume (240ml for US cups), not weight. Flour is light and airy, so 1 cup weighs only 125g. Sugar is denser, weighing 200g per cup. Butter is even denser at 227g. Honey is very dense at 340g per cup. This is why weighing in grams is more accurate than using cups.

What is the difference between US cups and UK cups? +

US cups measure 240ml while UK/metric cups measure 250ml - a 4% difference. Most American recipes use US cups. UK recipes traditionally use grams or imperial ounces rather than cups. When converting US recipes, use 240ml per cup. Australian recipes use 250ml cups. This converter uses US cup measurements as most online recipes are American.

What is the difference between UK and US baking terms? +

Key differences: All-purpose flour (US) = Plain flour (UK). Powdered/confectioner's sugar (US) = Icing sugar (UK). Heavy cream (US) = Double cream (UK). Light cream (US) = Single cream (UK). Baking soda (US) = Bicarbonate of soda (UK). Cilantro (US) = Fresh coriander (UK). Corn starch (US) = Cornflour (UK). Graham crackers (US) ≈ Digestive biscuits (UK).

How do I measure flour correctly for US recipes? +

For accurate cup measurements: 1) Stir/fluff flour in container first. 2) Spoon flour into measuring cup - don't scoop directly. 3) Level off with a straight edge - don't pack or shake. This 'spoon and level' method gives about 125g per cup. Scooping directly can pack flour to 140g+ per cup, making bakes too dry. Better still, weigh your flour in grams.

Should I use cups or grams for baking? +

Grams are more accurate for baking. Cup measurements can vary by 20% depending on technique - how flour is scooped, humidity, settling. A digital kitchen scale (available from about £10) eliminates this variability. Professional bakers use weight measurements. For casual baking, cups work fine, but for precision bakes like macarons or bread, weigh ingredients.

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Cups to Grams Converter UK 2024 | Baking Conversion Calculator