Ounces to Grams Converter
Accurately convert between ounces and grams with bidirectional conversion
Convert Ounces and Grams
Standard ounce used for everyday items (1 oz = 28.3495 g)
Common Ounces to Grams Conversions
| Ounces (oz) | Grams (g) |
|---|---|
| 1 oz | 28.35 g |
| 2 oz | 56.70 g |
| 4 oz | 113.40 g |
| 8 oz | 226.80 g |
| 12 oz | 340.19 g |
| 16 oz | 453.59 g |
Quick Facts
Avoirdupois Ounce
1 oz = 28.3495 grams
Used for everyday items
Troy Ounce
1 oz t = 31.1035 grams
Used for precious metals
Comparison
1 oz is ~28× heavier than 1g
Ounce is a larger unit
Conversion Tips
For cooking, use avoirdupois ounces
For precious metals, use troy ounces
16 oz = 1 pound (avoirdupois)
1000 g = 1 kilogram
Understanding Ounces and Grams Conversion
What are Ounces and Grams?
Ounce (oz) is a unit of mass in the imperial system, commonly used in the United States. There are two types: avoirdupois ounce (for everyday items) and troy ounce (for precious metals).
Gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. It's the standard unit used in most countries worldwide and in scientific contexts.
When to Use Each System?
- •Ounces: Common in US cooking, postal services, and precious metals trading
- •Grams: Universal in science, international recipes, and most countries
Conversion Formulas
Ounces to Grams:
grams = ounces × 28.3495
Grams to Ounces:
ounces = grams ÷ 28.3495
Example Calculation
Convert 5 ounces to grams:
5 oz × 28.3495 = 141.7475 g
Convert 100 grams to ounces:
100 g ÷ 28.3495 = 3.527 oz
Important Notes
- ⚠The conversion factor 28.3495 is exact for avoirdupois ounces (28.349523125 g precisely)
- ⚠Troy ounces are approximately 10% heavier than avoirdupois ounces
- ⚠Always verify which ounce type is being used in your specific application
- ⚠For precious metals trading, troy ounces are the standard worldwide