How to Convert Cups to Grams for Baking (Ingredient-by-Ingredient)
The single most common baking question is also the most misunderstood: how many grams are in a cup? The honest answer — it depends entirely on the ingredient. Here's why, which densities actually matter, and how to convert any recipe accurately without uploading your ingredient list anywhere.
The Cup Problem: Volume Isn't Weight
A cup is a volume measurement. A gram is a weight measurement. Bridging them requires knowing how dense the ingredient is — and every ingredient has a different density. That's why 1 cup of all-purpose flour weighs about 125 g while 1 cup of granulated sugar weighs about 200 g.
Generic online converters quietly sidestep this: many assume every ingredient is roughly the density of water, so 1 cup of anything "becomes" about 237 g. For flour that's nearly double the real weight — a recipe-level error that turns bread into a brick.
The fix is ingredient-aware conversion: a table of real densities (grams per cup) for each ingredient, used for every calculation. That's exactly what the Prescosoft Recipe Unit Converter does — and it all runs in your browser, so nothing is uploaded.
Reference: Grams per Cup for Common Ingredients
These are the standard culinary reference densities (US cup = 236.6 ml) used by professional baking references:
| Ingredient | Grams per cup |
|---|---|
| All-purpose flour | 125 g |
| Bread flour | 127 g |
| Cake flour | 114 g |
| Whole wheat flour | 120 g |
| Granulated sugar | 200 g |
| Brown sugar (packed) | 220 g |
| Powdered sugar | 120 g |
| Butter | 227 g |
| Honey | 340 g |
| Maple syrup | 322 g |
| Rolled oats | 85 g |
| White rice (uncooked) | 185 g |
| Almonds (whole) | 143 g |
| Shredded cheddar | 113 g |
| Cocoa powder | 96 g |
The full tool includes 50+ ingredients across baking, dairy, fats, grains, nuts, sweeteners, fruits, and more — each with its own stored density, plus a custom option for anything else.
How to Convert Any Recipe in Three Steps
- 1 Pick the ingredient. Start typing in the search box — the tool matches 50+ ingredients with their stored densities.
- 2 Enter the amount and units. Type the amount, choose the unit you have (cup, tablespoon, ounce…) and the unit you need (gram, kilogram, pound…).
- 3 Convert and scale. Get the exact result plus a full all-units breakdown. Use the scale factor to halve, double, or triple the whole recipe at once.
Example: 2 cups of all-purpose flour = 250 g. 1 cup of honey = 340 g. 2 tablespoons of granulated sugar = about 25 g. Each answer comes from the ingredient's real density, not a water-based guess.
Why Bakers Measure by Weight
Consistency
A cup of flour scooped vs spooned can differ by 20% or more. 125 g is always 125 g — same result every time.
Global recipes
Most of the world writes recipes in grams. Converting your family's cup-based recipes makes them universal.
Professional standard
Bakeries and cookbooks written by professionals specify weights — the industry's reliability secret.
Private by default
The converter works locally, so your family recipes and client work never leave your device.
Frequently Asked Questions
How many grams are in a cup of flour?
All-purpose flour weighs about 125 g per cup (spooned and leveled). Bread flour is about 127 g, cake flour about 114 g, and whole wheat flour about 120 g. Weights vary with how you scoop, so a kitchen scale is the most reliable way to measure.
How many grams are in a cup of sugar?
Granulated sugar weighs about 200 g per cup. Brown sugar packed is about 220 g per cup, and powdered (confectioners) sugar is about 120 g per cup. The differences come from crystal size and how tightly the sugar packs.
Why does 1 cup of honey weigh more than 1 cup of flour?
Because honey is much denser than flour. A cup is a volume measure, so the weight depends entirely on the ingredient's density. Honey is about 340 g per cup while flour is about 125 g per cup. Ingredient-aware converters store these densities so every conversion is correct.
Are my recipe amounts uploaded when I convert them?
No. The Prescosoft Recipe Unit Converter runs entirely in your browser with client-side JavaScript. Your ingredient amounts never leave your device — there's no account, no tracking, and nothing is stored after you close the page.
What if my ingredient isn't in the converter's list?
Use the Custom option and enter the ingredient's density in grams per cup. A quick search for 'grams per cup [ingredient]' gives the standard value from culinary references, and the converter will handle it exactly like the built-in ingredients.
Is measuring by weight better than measuring by volume?
For baking, yes. A cup of flour can vary by 20% or more depending on how it's scooped, while 125 g is always 125 g. Converting recipes to weight measurements makes results consistent, which is why professional bakers measure by weight.
Convert your recipes the right way — privately
Real densities for 50+ ingredients, cups to grams and back, with scaling and custom ingredients. Nothing is uploaded.