1/8 cup in Grams
1/8 cup (0.125 cups) is about 16 g of flour, 25 g of sugar and 28 g of butter. An eighth of a cup is a small measure used for concentrated ingredients like extracts, spices or a modest pour of oil, and it is exactly half of a quarter cup. Because it is one eighth of a full cup, an eighth cup of flour is about 16 grams and an eighth cup of sugar is about 25 grams, small enough that a kitchen scale gives a steadier result than a measuring cup.
Quick answer: an eighth of a cup, written 0.125 cups in decimal form, is 30 ml. In grams it is about 16 g of flour, 25 g of sugar, 28 g of butter and 30 g of water. Milk is close to 31 g.
1/8 cup (0.125 cups) in grams for every ingredient
A cup is a measure of volume, so an eighth of a cup weighs a different amount for each ingredient depending on how dense it is. The table lists 1/8 cup in grams and ounces for 45 common baking ingredients. Tap any ingredient for its full cup to gram table and a guide to measuring it well.
| Ingredient | 1/8 cup in grams | In ounces |
|---|---|---|
| All-Purpose Flour | 15.6 g | 0.551 oz |
| Bread Flour | 15.9 g | 0.56 oz |
| Cake Flour | 15 g | 0.529 oz |
| Whole Wheat Flour | 15 g | 0.529 oz |
| Granulated Sugar | 25 g | 0.882 oz |
| Brown Sugar | 27.5 g | 0.97 oz |
| Powdered Sugar | 15 g | 0.529 oz |
| Honey | 42.5 g | 1.5 oz |
| Maple Syrup | 40.3 g | 1.42 oz |
| Butter | 28.4 g | 1 oz |
| Milk | 30.5 g | 1.08 oz |
| Heavy Cream | 29.8 g | 1.05 oz |
| Yogurt | 30.6 g | 1.08 oz |
| Cream Cheese | 29 g | 1.02 oz |
| Shredded Cheese | 14.1 g | 0.498 oz |
| Water | 30 g | 1.06 oz |
| Vegetable Oil | 27.3 g | 0.961 oz |
| Cocoa Powder | 10.6 g | 0.375 oz |
| Cornstarch | 16 g | 0.564 oz |
| Baking Soda | 27.5 g | 0.97 oz |
| Baking Powder | 24 g | 0.847 oz |
| Salt | 34.1 g | 1.2 oz |
| Rolled Oats | 11.3 g | 0.397 oz |
| Uncooked Rice | 23.1 g | 0.816 oz |
| Chopped Nuts | 15 g | 0.529 oz |
| Breadcrumbs | 13.5 g | 0.476 oz |
| Peanut Butter | 32.3 g | 1.14 oz |
| Cornmeal | 15.3 g | 0.538 oz |
| Corn Syrup | 41 g | 1.45 oz |
| Molasses | 42.1 g | 1.49 oz |
| Sour Cream | 28.8 g | 1.01 oz |
| Coconut Oil | 27.3 g | 0.961 oz |
| Desiccated Coconut | 11.6 g | 0.41 oz |
| Raisins | 20.6 g | 0.728 oz |
| Chocolate Chips | 21.3 g | 0.75 oz |
| Almond Flour | 12 g | 0.423 oz |
| Powdered Milk | 16 g | 0.564 oz |
| Semolina | 20.9 g | 0.736 oz |
| Olive Oil | 27 g | 0.952 oz |
| Quinoa | 21.3 g | 0.75 oz |
| Panko Breadcrumbs | 6.25 g | 0.22 oz |
| Vanilla Extract | 26 g | 0.917 oz |
| Parmesan Cheese | 12.5 g | 0.441 oz |
| Granola | 14.1 g | 0.498 oz |
| Graham Cracker Crumbs | 12.8 g | 0.45 oz |
Why an eighth of a cup is not a single weight
The reason 1/8 cup of flour and 1/8 cup of honey weigh nothing alike is density. Flour is light and full of air, so an eighth of a cup of it is only about 16 grams. Honey is one of the densest things in the kitchen, so the same an eighth of a cup weighs far more. To turn a volume like an eighth of a cupinto grams you multiply by the ingredient's density in grams per cup, which is exactly what the table above does for you.
For everyday cooking, measuring an eighth of a cup with a measuring cup is perfectly fine. For baking, where the ratio of flour to sugar to fat decides whether a cake is tender or dense, weighing to the gram is far more reliable. A simple digital scale plus the figures here takes the guesswork out of it. Need a different amount? Try the cups to grams converter, or pick another common measure below.
Frequently asked questions
How many grams is 1/8 cup?
There is no single answer, because a cup measures volume and different ingredients have different densities. An eighth of a cup of flour is about 16 grams, of sugar about 25 grams, of butter about 28 grams and of water about 30 grams. The full table above lists 1/8 cup in grams for 45 ingredients.
How many grams is 0.125 cups?
0.125 cups is the decimal way of writing 1/8 cup, so the two are the same measure and the same page answers both. 0.125 cups is 30 ml, and in grams it is about 16 g of flour, 25 g of sugar, 28 g of butter and 30 g of water. Because a cup measures volume, the weight of 0.125 cups changes with the ingredient, so read the exact figure from the table above.
How many grams is 1/8 cup of flour?
An eighth of a cup of all-purpose flour is about 16 grams when spooned and levelled. Scooping straight from the bag packs in extra flour, so weighing is the reliable way to hit 16 grams.
How many grams is 1/8 cup of sugar?
An eighth of a cup of granulated white sugar is about 25 grams. Sugar is dense and does not compress much, so a levelled cup and a scooped cup come out close.
How many grams is 1/8 cup of butter?
An eighth of a cup of butter is about 28 grams. A full US cup of butter is 227 grams, which is two sticks or half a pound, so 1/8 cup scales directly from that.
Is 1/8 cup the same in US and metric cups?
This page uses US cups, where one cup is 240 millilitres, so 1/8 cup is 30 millilitres. A metric cup is 250 millilitres, so the same fraction holds a little more. Converting to grams removes the difference entirely.