Ounces to Grams Converter for Cooking and Baking
- One ounce equals 28.3495 grams. This converter handles oz to g for every cooking and baking situation — butter, flour, chocolate, and more.
Table of Contents
One ounce equals 28.3495 grams. Enter any ounce amount in the converter above and get the exact gram equivalent instantly — no math required.
Cooking recipes from the US use ounces. Recipes from the UK, Europe, or Australia use grams. This converter bridges that gap for every ingredient.
The Ounce to Gram Conversion Factor
The exact conversion is 1 oz = 28.3495 g. For most cooking purposes, 28.35 grams per ounce is precise enough. The formula is straightforward: multiply the number of ounces by 28.3495 to get grams.
For quick mental math, 1 oz is close to 28 grams. That 0.35g difference only matters if you are measuring spices in tiny amounts — for flour, sugar, or butter it rounds cleanly.
Common Cooking Weights — Ounces to Grams
| Ounces | Grams | Common Use |
|---|---|---|
| 1 oz | 28 g | 1 tablespoon butter |
| 2 oz | 57 g | small chocolate bar |
| 4 oz | 113 g | quarter pound, half cup butter |
| 6 oz | 170 g | chicken breast (small) |
| 8 oz | 227 g | 1 cup water, half pound |
| 12 oz | 340 g | standard pasta bag portion |
| 16 oz | 454 g | 1 pound |
Fluid Ounces vs Weight Ounces
There are two types of ounce and they are not the same. Weight ounces (oz) measure mass — the kind you use for flour, butter, and chocolate. Fluid ounces (fl oz) measure volume — used for milk, oil, and liquids.
1 fl oz of water weighs approximately 29.57 grams, which is slightly more than 1 weight oz (28.35 g). For water and thin liquids the difference is small. For dense ingredients like honey or olive oil, the difference is larger.
The converter on this page handles weight ounces. For fluid ounce volume conversions, use the Volume tab in the unit converter.
Grams Back to Ounces
To go the other direction — grams to ounces — divide the gram amount by 28.3495. The converter handles this automatically using the swap button. Common reverse conversions: 100 g = 3.53 oz, 250 g = 8.82 oz, 500 g = 17.64 oz.
Convert Ounces to Grams Free
No signup. No ads. Just fast, accurate oz to g conversion in your browser.
Open Unit Converter FreeFrequently Asked Questions
How many grams in 1 ounce?
1 ounce equals 28.3495 grams. For cooking, rounding to 28 grams is close enough for most recipes.
How many grams in 8 oz?
8 ounces equals 226.8 grams — commonly rounded to 227 grams. This is also equal to half a pound.
Is an ounce the same as a troy ounce?
No. A regular (avoirdupois) ounce is 28.35 grams and is used for food and everyday weight. A troy ounce is 31.1035 grams and is used for precious metals like gold and silver.
How do I convert ounces to grams without a calculator?
Multiply ounces by 28 for a close estimate. For exact conversions, use the unit converter above — it calculates to 8 significant digits instantly.
