Convert ounces to grams

1 oz=28.3495g

Use the converter below to change any ounces value into grams instantly — with formula, conversion table, and real-world examples.

You have

Equals

28.34952

Conversion formula

Forward

grams = ounces × 28.3495

Reverse

ounces = grams × 0.03527

Example: 10 oz × 28.3495 = 283.495 g.

About both units

From

Ounce

The ounce equals 28.35 grams and is 1/16 of a pound. It is common in American and British cooking for small ingredient weights. The fluid ounce (29.57 ml in the US, 28.41 ml in the UK) is a volume unit and is completely different from the mass ounce.

Real-world: A US tin of tuna is 5 oz (142 g). A Starbucks grande coffee is 16 fl oz (473 ml). Gold is traded in troy ounces (31.10 g).

Read full ounce reference →

Gram

The gram equals one thousandth of a kilogram. It is the standard unit in European cooking, pharmaceuticals and jewellery. An A4 sheet of 80 g/m² paper weighs about 5 g; a regular chicken egg is around 60 g. The word "gram" comes from the Greek "gramma", a small weight.

Real-world: A chicken egg weighs about 60 g. A standard bar of chocolate is 100 g. A euro coin weighs 7.5 g.

Read full gram reference →

Ounce to Gram conversion table

Common ounces to grams values for quick reference.

Ounce (oz)	Gram (g)
1 oz	28.3495 g
5 oz	141.748 g
10 oz	283.495 g
25 oz	708.738 g
50 oz	1,417.48 g
100 oz	2,834.95 g
250 oz	7,087.38 g
500 oz	14,174.76 g
1,000 oz	28,349.52 g
5,000 oz	141,747.62 g

Tips & common mistakes

Quick tips

1 oz = 28.35 g exactly (avoirdupois); 1 troy oz = 31.10 g.
16 oz = 1 lb in the avoirdupois system used for food.
When converting a US recipe, 1 oz ≈ 2 tablespoons of a liquid ingredient.

Avoid these

Confusing mass ounces (28.35 g) with fluid ounces (volume).
Using avoirdupois ounces (28.35 g) for precious-metal pricing — gold is in troy ounces (31.10 g).
Multiplying lb × 16 and calling the result oz — correct only for weight, not volume.

Frequently asked questions

How many grams in a ounce?

One ounce equals 28.3495 grams.

How do I convert ounces to grams?

Multiply the ounce value by 28.3495 to get the equivalent in grams.

What is 100 ounces in grams?

100 ounces equals 2,834.95 grams.

Is a ounce bigger than a gram?

Yes. 1 ounce equals 28.3495 grams, so one ounce is larger.

How to convert ounces to grams without a calculator?

Multiply by 28.35 for a quick estimate; use a calculator for precise results.

Related weight conversions

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