Ounces to Grams Converter
Convert ounces (oz) to grams (g) and vice versa instantly with this free online weight converter. Use 1 oz = 28.3495 g for accurate cooking, shipping, and everyday conversions.
About This Calculator
The Ounces to Grams Converter is a free online tool that instantly converts weights between the imperial and metric systems. Whether you are following a recipe from a different country, calculating shipping weights for international packages, measuring food portions for fitness tracking, or working on a science project, this converter provides accurate and reliable results using the standard conversion factor of 1 ounce = 28.3495 grams.
To convert ounces to grams, simply enter the value in the ounces input field. The calculator multiplies your entry by 28.3495 to display the equivalent weight in grams. For reverse conversions, enter a value in the grams field and the equivalent ounces are calculated by dividing by 28.3495. The ounce (oz) is a unit of mass used primarily in the United States, United Kingdom, and a few other countries that follow the imperial or US customary systems. The gram (g) is the base unit of mass in the metric system, used worldwide for everyday measurements.
Common conversions include 1 oz = 28.35 g, 4 oz = 113.40 g (standard stick of butter), 8 oz = 226.80 g (one cup of water), and 16 oz = 453.59 g (one pound). This converter is ideal for chefs following international recipes, fitness enthusiasts tracking food portions, shipping professionals calculating package weights, and students learning unit conversions in science class.
Regional Notes
United States: Ounces are the standard unit for food packaging, recipes, and postal shipping. One US ounce equals 28.3495 grams. The US customary system uses the avoirdupois ounce for most everyday measurements.
United Kingdom: While the UK officially adopted the metric system, ounces are still used informally for food portions, body weight, and some retail products. UK ounces are identical to US ounces (avoirdupois).
India: India uses the metric system exclusively, so grams and kilograms are standard for all official measurements. However, ounces may be encountered in imported food products, international recipes, and jewelry where troy ounces are used for precious metals.
Frequently Asked Questions
How do I convert ounces to grams?
To convert ounces to grams, multiply the number of ounces by 28.3495. For example, 5 ounces multiplied by 28.3495 equals 141.7475 grams. Enter your value in the ounces field above and the conversion happens instantly.
How many grams are in one ounce?
One avoirdupois ounce is equal to 28.3495 grams. This standard conversion factor is used worldwide for converting ounces to grams in cooking, shipping, and everyday applications.
Can I convert grams to ounces with this tool?
Yes, this converter works both ways. Enter any value in the grams field and the equivalent in ounces will be calculated automatically. The conversion uses the formula ounces = grams / 28.3495.
Is the conversion the same for gold and precious metals?
No, precious metals like gold and silver use the troy ounce (31.1035 g) instead of the standard avoirdupois ounce (28.3495 g). This converter uses the standard ounce. For precious metals, use a troy ounce converter.
What is the formula to convert ounces to grams?
The formula is: grams = ounces × 28.3495. To convert in reverse: ounces = grams / 28.3495. Both formulas are built into this calculator for instant bidirectional results.
How many grams is 14 ounces?
14 ounces is approximately 396.89 grams. Simply multiply 14 by 28.3495 to get 396.893 grams. Enter 14 in the ounces field above to see the precise result.
Is this ounces to grams converter free to use?
Yes, all calculators on Calculy are completely free to use. No registration, no hidden fees, and no usage limits. Convert ounces to grams as many times as you need.