Ounces to Grams Converter

Type a number of ounces and this converter shows the answer in grams instantly (1 oz = 28.3495 g). Below the converter you will find a ready-made oz to g table, and further down the formula with a worked example.

American recipes, steak and cheese portions, coffee bags and parcels are often weighed in ounces. Converting to grams is the key to accurate baking on a digital scale: a 4 oz stick of butter is 113.4 g, an 8 oz steak is 226.8 g, a 12 oz bag of coffee is 340.2 g and a 16 oz (1 lb) package is 453.6 g.

How to use the Ounces to Grams tool

1. Enter the value in ounces in the Value box. Decimals such as 4.5 are fine.
2. The result in grams appears straight away, rounded to six significant digits.
3. Check the formula line under the result to see exactly how it was calculated.
4. Press ⇄ to convert grams back to ounces, or pick any other unit from the lists.
5. Use Copy result, or look up common values in the conversion table.

Why use ToolOrca Ounces to Grams

• Exact factor: 1 oz = 28.3495 g
• Conversion table: oz to g
• Formula and worked example included
• Instant result as you type
• Converts to every other weight unit too
• Free, private and works offline

How to convert ounces to grams

One avoirdupois ounce is 1/16 of a pound, exactly 28.349523125 grams. A gram is one thousandth of a kilogram. So 1 oz = 28.3495231 g, and 1 g = 0.0352739619 oz.

To convert ounces to grams, multiply the number of ounces by 28.349523.

Worked example: 8 oz × 28.349523 = 226.796 g.

Quick mental math for oz to g

Multiply by 28, or by 30 for a rough figure: 4 oz × 28 = 112 g (exact 113.4 g). For baking, use the exact factor or this converter.

Need the opposite direction? Use the grams to ounces converter, or switch units with the ⇄ button above.