Unit Converter
Ounces to Grams Converter
Convert ounces to grams instantly. 1 oz = 28.3495 g. Free online converter for weight measurements.
Grams
28.3495 g
1 oz = 28.3495 g
Ounces to Grams formula
g = oz × 28.3495An ounce is a unit of weight used primarily in the US and UK, while grams are the metric standard. The conversion factor is fixed: 1 oz = 28.3495 g, based on the international avoirdupois pound definition of 453.592 g per pound.
Ounces to Grams conversion table
| Ounces (oz) | Grams (g) |
|---|---|
| 1 oz | 28.3495 g |
| 2 oz | 56.699 g |
| 3 oz | 85.0486 g |
| 5 oz | 141.75 g |
| 10 oz | 283.5 g |
| 20 oz | 566.99 g |
| 25 oz | 708.74 g |
| 50 oz | 1417.48 g |
| 100 oz | 2834.95 g |
| 500 oz | 14174.76 g |
| 1000 oz | 28349.52 g |
When you need to convert ounces to grams
- Scaling recipes when cooking or baking with ingredients listed in ounces but you need grams
- Shipping international packages where weight limits are specified in grams but your scale reads ounces
- Dosing supplements or medications prescribed in ounces but packaged by gram weight
- Comparing product weights when shopping between US (oz) and metric (g) labeling
- Calculating precious metal weights for jewelry or investment where standards vary by region
Frequently asked questions
Why is the conversion factor 28.3495 and not a round number?
The avoirdupois ounce is defined as 1/16 of a pound, which equals exactly 453.592 grams. Dividing by 16 gives 28.3495 g per ounce—a precise standard set by international agreement.
Is there a difference between fluid ounces and weight ounces?
Yes. Fluid ounces measure volume, not weight. This converter handles weight ounces (avoirdupois). Fluid ounces convert differently and require the liquid's density to determine weight in grams.
Can I use this converter for both cooking and shipping?
Yes. The formula g = oz × 28.3495 applies to any weight measurement. Whether you're scaling a recipe or calculating package weight, the conversion is identical.