Grams to Ounces Calculator
Instantly convert grams to ounces with our free online tool. Ideal for US cooking, baking recipes, and shipping. Get precise g to oz results in real-time.
US Weight Converter CalculatorThe quick answer for 1 Grams — type any value below for the exact result
Grams
Ounces
g to oz Conversion Formula
To convert grams to ounces, multiply the gram value by 0.035274. This conversion factor is based on the international avoirdupois ounce, where 1 ounce equals exactly 28.349523125 grams.
Grams and Ounces Explained
Grams (g)
A gram (g) is the foundational mass unit of the metric system, defined as one thousandth of a kilogram. It matches the scale of kitchen and laboratory work: a paperclip is about 1 g, a metal teaspoon of sugar about 4 g, and a smartphone around 180 g. Because the gram is small, nutrition labels, jewelry weights, and chemistry bench work all quote it directly rather than in kilogram decimals.
Where it is used: Grams are the working unit on kitchen scales and pharmacy balances across the entire metric world, and they appear on nutrition facts panels in the United States as well.
Origin: The gram was originally defined in 1795 as the mass of one cubic centimeter of water at the melting point of ice, making it one of the very first metric units.
Ounces (oz)
An ounce (oz) in everyday use is the avoirdupois ounce, equal to exactly 28.349523125 g — about 28 g, or slightly more than a slice of bread. Sixteen ounces make one pound, and the ounce handles the fine end of imperial weighing where pounds would be too coarse: deli slices, coffee portions, and snack packs are labeled in ounces.
Where it is used: Ounces are the everyday choice in the United States for packaged food, postal rates, and kitchen recipes, and they still appear on UK packaging alongside grams.
Origin: The ounce comes from the Roman uncia, one twelfth of a Roman pound. The avoirdupois version was standardized in 1959 alongside the pound at exactly 28.349523125 grams.
Grams to Ounces Conversion Table
| Grams (g) | Ounces (oz) |
|---|---|
| 1 g | 0.0352739907 oz |
| 2 g | 0.0705479814 oz |
| 5 g | 0.1763699536 oz |
| 10 g | 0.3527399072 oz |
| 20 g | 0.7054798145 oz |
| 25 g | 0.8818497681 oz |
| 30 g | 1.0582197217 oz |
| 40 g | 1.4109596289 oz |
| 50 g | 1.7636995361 oz |
| 75 g | 2.6455493042 oz |
| 100 g | 3.5273990723 oz |
| 125 g | 4.4092488404 oz |
| 150 g | 5.2910986084 oz |
| 175 g | 6.1729483765 oz |
| 200 g | 7.0547981446 oz |
| 250 g | 8.8184976807 oz |
| 300 g | 10.5821972169 oz |
| 400 g | 14.1095962892 oz |
| 500 g | 17.6369953615 oz |
| 1000 g | 35.2739907229 oz |
Ounces to Grams Conversion Table
| Ounces (oz) | Grams (g) |
|---|---|
| 0.5 oz | 14.17475 g |
| 1 oz | 28.3495 g |
| 2 oz | 56.699 g |
| 3 oz | 85.0485 g |
| 4 oz | 113.398 g |
| 6 oz | 170.097 g |
| 8 oz | 226.796 g |
| 12 oz | 340.194 g |
| 16 oz | 453.592 g |
| 20 oz | 566.99 g |
| 24 oz | 680.388 g |
| 32 oz | 907.184 g |
Grams to Ounces in Everyday Objects
Common real-world examples that make Grams and Ounces easy to picture at a glance.
| Grams (g) | Ounces (oz) | |
|---|---|---|
| A paperclip | 1 g | 0.0352739907 oz |
| A US nickel coin | 5 g | 0.1763699536 oz |
| A chocolate bar | 45 g | 1.5873295825 oz |
| A tennis ball | 58 g | 2.0458914619 oz |
| A stick of butter | 113 g | 3.9859609517 oz |
| A smartphone | 180 g | 6.3493183301 oz |
When You Need Grams to Ounces Conversions
Specialty Coffee Brewing
Barista recipes are written in grams, but US-bought grinders and kettles often display ounces. A standard 18 g espresso dose converts to 0.635 oz, and matching that number keeps shot timing consistent on either display.
Macronutrient Tracking
Food scales in metric gyms weigh protein in grams while US portion guides speak in ounces. A 30 g scoop of whey is 1.06 oz, and converting each food entry keeps daily protein totals honest.
International Mail and Packets
Postal operators price international letters per 10 g or 2 oz increments. A 100 g large letter converts to 3.53 oz, which decides whether it clears the first international rate band.
Adapting US Baking Recipes
American recipes list chocolate, nuts, and dried fruit in ounces while European scales read grams. Scaling 250 g of flour means 8.82 oz in the original recipe terms — converting both keeps the baker ratios intact.
Related Weight Conversions
How to Use
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1
Enter Grams
Type or paste the gram value you want to convert — common entries include recipe amounts like 250 g for a cup of flour
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2
View Ounces
The equivalent ounce value appears instantly. For example, 250 g converts to approximately 8.82 oz
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3
Copy or Swap
Copy the result to your clipboard or click Swap to convert ounces back to grams
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4
Use the Table
Check the conversion table for common values — handy for quick cooking reference without typing
Why Use Be Converter?
Instant Conversion
Get precise gram to ounce results in real-time as you type — no waiting, no page reloads
High Accuracy
Uses the exact international avoirdupois standard: 1 oz = 28.349523125 g, accurate to 8 decimal places
Conversion Table
Quick reference table with common cooking measurements like 28 g (1 oz), 113 g (4 oz), and 454 g (16 oz)
Bidirectional
Easily swap between grams and ounces with one click for reverse conversions
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Frequently Asked Questions
How many ounces are in 1 gram?
How do I convert grams to ounces for cooking?
Is this using avoirdupois or troy ounces?
Why do American recipes use ounces while European ones use grams?
Is this tool free to use?
How many ounces is 100 g?
Is 250 g the same as 8 oz?
How many grams are in a half ounce?
About Grams to Ounces Calculator
Our free online grams to ounces calculator provides instant, accurate weight conversions. Whether you are following an American recipe that lists ingredients in ounces while your kitchen scale reads in grams, tracking macros for nutrition, or shipping packages domestically, this tool delivers precise results. The gram is the base unit of mass in the metric system, while the ounce belongs to the imperial system primarily used in the United States. Our converter uses the exact international avoirdupois standard where 1 ounce equals 28.349523125 grams.
Expert Tips for g to oz Conversion
For quick kitchen estimates: 30 g is roughly 1 oz, 100 g is about 3.5 oz, and 250 g is close to 9 oz
A standard US stick of butter weighs 113 g (4 oz). Keep this as a handy reference point for baking conversions
When meal prepping, remember that a 3 oz serving of cooked meat (about 85 g) is roughly the size of a deck of cards
For shipping, most postal services round up — 454 g equals exactly 16 oz (1 lb), so a 500 g package is about 1.1 lb
If your digital scale toggles between g and oz, use this converter to double-check it is reading correctly — 100 g should show 3.527 oz