Example 1
100 g -> 3.5274 oz of a serving.
Grams to ounces
Type a mass from a kitchen scale and pick grams or ounces. 100 g is 3.5274 oz. This is the avoirdupois ounce, 1/16 of a pound, not troy and not fl oz.
Portion mass. Whole pound: kilograms and pounds. Fluid: milliliters and US fluid ounces.
Result
Enter a value. The result shows up here.
How it works
The avoirdupois ounce is exactly 28.349523125 g, because the 0.45359237 kg pound is split by 16. On the page 1 oz is 28.3495 g. 100 g of chocolate is 3.5274 oz. A 250 g butter block is 8.8185 oz. 8 oz from a US recipe is 226.7962 g. 16 oz is exactly 1 lb, 453.5924 g, but pounds live next door. 500 g of flour is 17.6370 oz. 5 oz of fillet is 141.7476 g.
A US recipe writes oz; a metric scale shows g. Type 100 and leave grams. 7 g of yeast is 0.2469 oz. The 58 example on the page is 58 g, about 2.05 oz, not 58 kg. Kilograms go on the pound page.
Pick the direction from the list: grams to ounces or ounces to grams. A comma and a period both work. Typed zero is allowed. A minus is rejected. Four decimals stay, because 1 g is 0.0353 oz and “0.04” overstates a spice. The switch sets g or oz on an empty field and does not rewrite a typed 100.
Pounds live on the kilograms page. A fluid ounce, about 29.57 ml, lives on the milliliter page. Here it stays portion mass, not volume and not a whole bag in kg.
A troy ounce is 31.1034768 g, for bullion. Do not mix it with the kitchen ounce of 28.3495 g. A US label often says 3.5 oz at 100 g; the result is 3.5274.
One field, one ingredient. Oil and water with the same mass in grams give the same ounce here, because we convert mass, not density.
How to use
- Type a mass from a pack, for example 100 or 8.
- Pick grams to ounces or ounces to grams.
- Click Calculate. 100 g gives 3.5274 oz. 250 g gives 8.8185 oz.
- This is a mass ounce, not fl oz from a bottle. 1 oz is 28.3495 g.
- For a pound, open kilograms. For fluid, open milliliters and US ounces.
Formula
oz = g / 28.349523125
g = oz × 28.349523125
16 oz = 1 lb. The troy ounce (31.1034768 g) is not in this formula.
g and avoirdupois oz on the scale
Here 100 g is 3.5274 oz. This is the avoirdupois ounce, 1/16 of a pound, not troy 31.10 g and not fl oz.
- g
- Grams of mass from a kitchen scale. 100 / 28.349523125 = 3.5274 oz. That is not milliliters of honey.
- oz
- Avoirdupois ounce, 28.349523125 g. 3.5274 from 100 g. 16 oz = 1 lb. Troy ounce and fl oz stay out.
Real-life examples
Example 2
1 oz -> 28.3495 g on the scale.
Example 3
250 g -> 8.8185 oz of a stick.
Example 4
8 oz -> 226.7962 g in a recipe.
Example 5
500 g -> 17.6370 oz of flour.
Example 6
16 oz -> 453.5924 g, which is 1 lb.
Example 7
5 oz -> 141.7476 g of fillet.
Ways to use this converter
- You convert 250 g of butter when a US recipe is in oz.
- You check 8 oz of flour against a kitchen scale in grams.
Frequently asked questions
Is this avoirdupois or troy?
Avoirdupois: 28.349523125 g, 1/16 of a pound. A troy ounce is 31.1034768 g, for gold.
How many grams is exactly one ounce?
Exactly 28.349523125 g, 28.3495 g on the page. A 28 g shortcut is too coarse for spices.
Can a portion be negative?
Zero grams is allowed. A minus is not an ingredient.
Does US mode start on ounces?
Yes, on an empty field. Metric starts on grams. The switch does not rewrite a typed number.
How many ounces are 100 g and 250 g?
100 g is 3.5274 oz. 250 g is 8.8185 oz. A US label at 100 g often says 3.5 oz.
Is 16 oz exactly one pound?
Yes, avoirdupois: 16 oz = 1 lb = 453.59237 g, 453.5924 g on the page. Convert pounds on the sibling page.
How do I type 7 g of yeast?
Type 7 and leave grams. You get 0.2469 oz, because 7 / 28.3495.
Is the 58 example kilograms?
The field is grams. 58 g is about 2.05 oz. Type 58 kg on the kg and lb page.
How is this different from a fluid ounce?
This is mass. fl oz is volume, about 29.57 ml, on the milliliter page.
How many g are 8 oz and 5 oz?
8 oz is 226.7962 g. 5 oz of fillet is 141.7476 g. 500 g of flour is 17.6370 oz.
Knowledge sources
The converter multiplies your number by an SI factor. NIST SP 330 and BIPM define the units, not your reading.
Page updated in 2026.