Ounces to Grams Conversion Calculator

Ounce (oz) to Gram (g) Converter

Symbol: oz (ounce), g (gram)

The ounce and gram are units of mass/weight measurement, with the ounce being part of the imperial system and the gram being part of the metric system (SI).

Formula: 1 ounce = 28.3495 grams

Common Conversions:

  • 1 oz = 28.35 g
  • 4 oz = 113.4 g
  • 8 oz = 226.8 g
  • 16 oz (1 pound) = 453.6 g
  • 100 g = 3.527 oz

Ounce (oz)
Gram (g)

Conversion Result

1 oz=
1.000 g

Use the converter above to calculate different values and units

What are Weight and Mass Units?

Weight and mass units are used to measure how heavy an object is. The ounce (oz) is a unit of weight in the imperial and US customary systems, while the gram (g) is a unit of mass in the metric system.

The ounce is 1/16 of a pound in the avoirdupois system, which is the most commonly used ounce in everyday measurements in the United States. The gram is 1/1000 of a kilogram, the base unit of mass in the International System of Units (SI).

Learn more from Bureau International des Poids et Mesures (BIPM) or NIST.

Common Ounce to Gram Conversions

Ounces (oz)Grams (g)Common Reference
0.0351Paperclip
0.1765Teaspoon of salt
128.35Standard ounce
1.7650Chocolate bar
3.53100Small apple
8.82250Cup of flour
17.64500Package of pasta
35.2710001 kilogram / 2.2 pounds

Practical Use Cases

  • Cooking and Baking: Converting American recipes to metric measurements for international use
  • Nutrition Tracking: Converting food weights from US nutrition labels to grams for international dietary apps
  • Postal Services: Converting shipping weights for international packages
  • Jewelry and Precious Metals: Converting between troy ounces and grams for gold, silver, and other precious metals
  • Pharmaceutical and Medical: Converting US medication dosages to the metric system used in most countries
  • Coffee and Tea: Converting traditional ounce measurements to precise gram measurements for consistent brewing

Educational Resource

This educational video explains the relationship between ounces and grams and demonstrates how to convert between these units with practical examples and applications.

Conversion Tools

Download Conversion Chart (PDF)

Get our comprehensive ounces to grams conversion chart for quick reference when you're offline.

Ounces to Grams Conversion FAQs

Find answers to common questions about converting between ounces and grams.