Grams to Ounces — Weight Converter

Convert between grams, ounces, pounds and kilograms. 1 oz = 28.35 g · 1 lb = 453.6 g.

Grams to ounces chart

Ounces vs fluid ounces — they are not the same

This trips people up constantly, because both are shortened to "ounce" in speech. An ounce (oz) is a unit of weight: 28.35 g, what a scale reads. A fluid ounce (fl oz) is a unit of volume: 29.6 ml, what a measuring jug reads.

They line up almost exactly for water — 1 fl oz of water weighs about 1 oz — and that coincidence is why the two got the same name. For everything else they diverge, sometimes wildly. Eight fluid ounces of flour (one US cup) weighs about 4.25 oz, not 8 oz. Eight fluid ounces of honey weighs about 12 oz. If a recipe gives ounces for a dry ingredient it almost always means weight; if it gives ounces for milk, water or stock, it usually means fluid ounces. When in doubt, the presence of a "fl" or a jug in the instructions is the tell.

Why bakers work in grams

Grams win on two counts. First, no fractions: 340 g is one number, where the same quantity in imperial is 12 oz or ¾ lb, and every conversion step invites another rounding error. Second, resolution: a gram is small enough to measure yeast, salt and baking powder meaningfully, whereas ounce scales usually step in eighths — about 3.5 g — which is a large slice of a 7 g sachet of yeast.

Grams also make ratios legible. Once you can see that a bread dough is 500 g flour to 350 g water, you know it's 70% hydration, and you can scale it to any batch size in your head. That's why professional recipes and this site both lead with grams. To go the other way — from cups of a specific ingredient to grams — you need that ingredient's density, so pick it from the ingredient list.

Frequently asked questions

How many grams in an ounce?

1 ounce is 28.35 grams. Recipes often round this to 28 g or even 30 g, which is fine for most cooking but drifts once you're converting several ounces.

How many ounces is 100 grams?

100 grams is about 3.53 ounces — just over 3½ oz.

How many ounces is 250 grams?

250 grams is about 8.82 ounces, a shade under 9 oz (roughly half a pound).

How many ounces is 500 grams?

500 grams is about 17.6 ounces, or 1.1 pounds — just over a pound.

How many grams in a pound?

1 pound is 453.6 grams (16 ounces). Half a pound is 227 g and a quarter pound is 113 g — the same 113 g as a US stick of butter.

How many grams in a kilogram?

1 kilogram is exactly 1,000 grams, or about 2.2 pounds.

Is a fluid ounce the same as an ounce?

No, and confusing them is the most common conversion mistake. An ounce (oz) measures weight; a fluid ounce (fl oz) measures volume. They coincide only for water, where 1 fl oz happens to weigh about 1 oz. For flour, 1 fl oz weighs roughly half an ounce — so 8 fl oz of flour is nothing like 8 oz of flour.

How many ounces in a pound?

16 ounces. Recipes written in pounds and ounces mean weight throughout — 1 lb 4 oz is 20 oz, or 567 g.

Should I use grams or ounces for baking?

Grams. Grams are single units with no fractions, so 340 g is unambiguous where 12 oz invites rounding at every step. Grams are also finer-grained: 1 g of precision on a small quantity of yeast or salt is achievable, whereas ounce scales typically read in eighths.

Do I need a kitchen scale?

For everyday cooking, no. For baking, it's the single upgrade that improves results most, because it removes the 20–30% variation you get from measuring flour by volume. Any scale that reads in 1 g steps and has a tare button is enough.