Converting Caster Sugar accurately from grams to cups is essential for perfect baking and cooking. Because of its unique density, the standard measurement is 200g per US cup.
Whether you are following a European recipe or just prefer the precision of a digital scale, knowing the exact weight of a cup of Caster Sugar ensures consistent, professional results every time.
Use this live calculator to find the exact volume for your recipe. Enter the weight in grams below.
A quick reference guide for common recipe amounts of Caster Sugar.
| Grams (g) | US Cups | Tablespoons | Application |
|---|---|---|---|
| 10g | 0.05 | 0.8 | - |
| 20g | 0.1 | 1.6 | - |
| 50g | 0.25 | 4.0 | - |
| 100g | 0.5 | 8.0 | - |
| 150g | 0.75 | 12.0 | - |
| 200g | 1.0 | 16.0 | - |
| 250g | 1.25 | 20.0 | - |
| 300g | 1.5 | 24.0 | - |
| 400g | 2.0 | 32.0 | - |
| 500g | 2.5 | 40.0 | - |
| 750g | 3.75 | 60.0 | - |
| 1000g | 5.0 | 80.0 | - |
* Values are calculated based on a density of 200g per cup.
See how Caster Sugar compares in density to other related ingredients.
| Ingredient | Grams per Cup | Notes |
|---|---|---|
| Caster Sugar This page | 200g | Standard measurement |
| Granulated Sugar | 200g | Similar substitute |
| Powdered Sugar | 120g | Alternative use |
| Brown Sugar | 220g | Alternative use |
| Baker's Sugar | 200g | Alternative use |
| Superfine Sugar | 200g | Alternative use |
Proper measurement technique is vital for recipe success. Here's how to handle Caster Sugar.
Spoon and level
No packing needed
Finer than granulated — settles slightly
Weigh for meringue ratios
Standard method yields exactly 200g.
Increases density, causing a heavier cup and potentially altering recipe balance.
The most consistent and foolproof method. Always weigh for best results.
The exact amount of Caster Sugar can dramatically change the chemistry of your cooking and baking.
Consistent ratios are crucial for structural integrity.
Too much or too little alters the final spread and rise.
Precise amounts ensure predictable reactions at temperature.
Ensures the perfect texture and crumb structure.
Measuring Caster Sugar by volume is subject to human error (packing, scooping). A digital scale eliminates the guesswork, getting you exactly 200g every time.
See how Caster Sugar is commonly used across popular recipes.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Standard usage amount.
Always refer to your specific recipe's notes. Some authors may use a non-standard cup size or a different measuring technique, though 200g per cup is the industry standard for Caster Sugar.
100 grams of Caster Sugar is approximately 0.5 cups. This calculation is based on the standard density of 200g per US cup. Using a digital kitchen scale is the best way to measure exactly 100g.
200 grams of Caster Sugar equals exactly 1.0 cups. This assumes you are using the standard spoon and level method to measure the volume.
There are exactly 200 grams in one US cup of Caster Sugar. This is the standard culinary weight used by professional bakers and recipe developers worldwide.
100.0 grams of Caster Sugar is exactly half a cup (0.5 cup). When halving recipes, weighing your ingredients ensures you maintain the correct ratios.
Pulse in food processor. Understanding the difference helps you make better substitutions and achieve the perfect texture in your final bake.
Dissolves quickly in egg whites without deflating. Always consider how moisture and density will affect the chemistry of the recipe.
UK defaults to caster, US defaults to granulated. Be mindful of regional differences in ingredient terminology when following international recipes.
Much faster than granulated. Precision is key in baking, and volume measurements can vary wildly depending on how they are packed into the cup.
Explore our full database of ingredient conversions.