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Grams to oz and oz to grams converter

Grams to oz: one ounce is 28.349523125 g, so 100 g = 3.527 oz. Enter grams and the ounces update as you type, with the pounds-and-ounces form and the troy-ounce value underneath; ounces to grams works in the same box.

Example: Weight 100 · Direction: Grams to oz (g → oz) → Answer: 100 g = 3.527 oz. Source: NIST SP 811, Appendix B.8 – pound (avoirdupois) = 0.45359237 kg, ounce = 28.349523125 g (exact). Updated: .

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Result

Answer
100 g = 3.527 oz
Pounds, ounces, troy ounces
As pounds and ounces: 0 lb 3.53 oz. As troy ounces (gold, silver): 3.215 ozt.
Working
100 g ÷ 28.349523125 = 3.527 oz
Quick check in your head
100 ÷ 28 ≈ 3.6 oz (exact: 3.527 oz). Dividing by 28 instead of 28.35 comes out about 1.2 % too high.
Conversion chart
goz
10.0353
50.1764
100.3527
250.8818
28.351
501.764
752.646
1003.527
1254.409
1505.291
2007.055
2508.818
30010.582
40014.11
45416.014
50017.637
75026.455
1,00035.274
Weights worth knowing
Weightgoz
A paper clip10.0353
US nickel (5.000 g)50.1764
One ounce28.351
One troy ounce31.1031.097
A 100 g chocolate bar1003.527
One stick of butter (4 oz)113.3984
A 12 oz bag of coffee340.19412
One kilogram1,00035.274
One avoirdupois ounce is exactly 28.349523125 g, so grams to oz is exact before rounding. For gold, silver and platinum, quotes use troy ounces (31.1034768 g), shown under the answer.

How it is calculated

Grams to ounces in one line

ounces = grams ÷ 28.349523125. That number is exact, because the international ounce is defined as 1/16 of the pound of 453.59237 g. So 250 g = 8.818 oz and 1,000 g = 35.274 oz. Going the other way, grams = ounces × 28.349523125: 8 oz = 226.796 g.

Reading a nutrition label

US labels print both numbers, and they differ slightly from the exact conversion because manufacturers round. A serving of 28 g is declared as “1 oz (28 g)”, and 56 g is “2 oz”, although 56 g is 1.975 oz. The converter uses the exact factor, so expect small differences against the label. A 100 g bar is 100 g = 3.527 oz, and 454 g is the familiar “1 lb” pack of meat or pasta.

Gold and silver: use the troy ounce

Precious metals are priced per troy ounce of 31.1034768 g, not per ordinary ounce. A 31.1 g coin is one troy ounce but 1.097 regular ounces. Look at the “troy ounces” line below the answer when you weigh jewellery or bullion; 100 g of gold is 3.215 troy ounces, not 3.527.

The shortcut and its error

Dividing by 28 is easy and about 1.2 % too high: 8.9 oz instead of 8.818. For a recipe that is fine. For postage the exact figure decides: a first-class letter stops at 3.5 oz, which is 99.2 g, so a 100 g letter is already over the limit at 3.527 oz.

Related: lbs to oz for pounds and ounces, kg to lbs for body weight and the cups to grams converter for baking ingredients.

Frequently asked questions

How many ounces is 100 grams?

100 g = 3.527 oz. That is a little more than three and a half ounces.

How many grams are in an ounce?

Exactly 28.349523125 g. Most kitchens round to 28 g or 28.35 g.

How do I convert grams to oz in my head?

Divide by 28 and expect a result about 1.2 % too high: 8.9 oz for 250 g, against 8.818 oz exact. Another trick is to multiply by 0.035.

What is 8 oz in grams?

8 oz = 226.796 g. Half a pound of butter or two sticks is therefore about 227 g.

Does grams to oz change for gold?

Yes. Gold is weighed in troy ounces of 31.1034768 g. 100 g of gold is 3.215 troy oz, while 100 g of flour is 3.527 ordinary oz.

Sources and legal basis

As of: · Editorial policy

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