Grams to Ounces Calculator

Converting grams to ounces is straightforward once you know the relationship between the two units. One ounce equals exactly 28.3495 grams. So to convert, you divide the number of grams by that figure.

Here's the basic process:

1. Start with your measurement in grams.
2. Divide by 28.3495 (or use 28.35 for everyday purposes).
3. The result is your measurement in ounces.

For most practical situations, rounding to 28.35 gives you more than enough accuracy. If you're doing something where precision really matters, like a lab measurement or a very precise recipe, stick with the full decimal. For grabbing a ballpark number, you can even use 28 and get close enough.

The formula is simple:

Ounces = Grams ÷ 28.3495

You can also write it as:

oz = g × 0.035274

Both versions give you the same result. The first divides by the number of grams per ounce. The second multiplies by the decimal equivalent of that ratio. Use whichever feels more intuitive to you. If you're working with a calculator, multiplying by 0.035274 tends to be a tiny bit faster to key in.

To go the other direction and convert ounces back to grams, just multiply the number of ounces by 28.3495. That's all there is to it.

Some gram values come up constantly in cooking, shopping, and shipping. Here are the conversions you'll probably reach for most often:

• 1 gram = 0.035 oz
• 5 grams = 0.176 oz
• 10 grams = 0.353 oz
• 25 grams = 0.882 oz
• 50 grams = 1.764 oz
• 100 grams = 3.527 oz
• 150 grams = 5.291 oz
• 200 grams = 7.055 oz
• 250 grams = 8.818 oz
• 500 grams = 17.637 oz
• 1000 grams (1 kg) = 35.274 oz

The 100-gram mark is worth memorizing on its own. Roughly 3.5 ounces. That one comes up all the time on nutrition labels and packaged foods.

Bookmark this chart or print it out if you spend a lot of time in the kitchen with recipes from different countries. European and Australian recipes in particular tend to use grams exclusively, so having a quick reference saves real time.

Grams and ounces measure the same thing (mass or weight), but they come from two very different systems with different histories and levels of global adoption.

One thing worth knowing: when people say "ounce" in the context of weight, they typically mean the avoirdupois ounce, which is the standard 28.3495-gram unit. There's also a troy ounce (about 31.1 grams) used for precious metals like gold and silver. If you're converting everyday items, you're almost certainly working with the avoirdupois ounce.

The metric system's decimal structure makes math much cleaner. That said, ounces aren't going anywhere in the US anytime soon, so knowing how to navigate both systems is a practical skill.

This is where grams-to-ounces conversions matter most for a lot of people. Baking especially is unforgiving when measurements are off. A recipe that calls for 200g of flour isn't guessing; it's specifying a precise amount that affects texture, rise, and taste.

American recipes often list ingredients in cups and ounces. European and British recipes lean heavily on grams. If you're pulling a recipe from a UK food blog or an internationally published cookbook, you'll run into grams constantly.

Some handy weight references for common baking ingredients:

• 1 cup all-purpose flour ≈ 120–125 g (about 4.4 oz)
• 1 cup granulated sugar ≈ 200 g (about 7.1 oz)
• 1 cup butter ≈ 227 g (8 oz, or 2 sticks)
• 1 cup rolled oats ≈ 90 g (about 3.2 oz)
• 1 cup honey ≈ 340 g (about 12 oz)

A kitchen scale that reads in both grams and ounces is worth owning if you bake regularly. It removes the guesswork entirely. Volume measurements like cups can vary based on how tightly you pack an ingredient, but weight is weight.

Let's walk through a few real examples so the formula feels concrete.

Example 1: Convert 85 grams to ounces
85 ÷ 28.3495 = 2.998 oz (just about 3 ounces)

Example 2: Convert 454 grams to ounces
454 ÷ 28.3495 = 16.01 oz (essentially 16 oz, or 1 pound)

Example 3: Convert 30 grams to ounces
30 ÷ 28.3495 = 1.058 oz (just over 1 ounce)

Example 4: Convert 750 grams to ounces
750 ÷ 28.3495 = 26.455 oz (about 1 pound 10 ounces)

Notice that 454 grams comes out to almost exactly 16 ounces. That's because 454g is the standard weight of one pound. It's a useful anchor number to remember. Similarly, a standard stick of butter in the US is 113 grams, which is 4 ounces. These kinds of reference points make estimating much faster once they stick in your head.

A few errors show up repeatedly, and most of them are easy to avoid once you know to watch for them.

• Confusing weight ounces with fluid ounces. Fluid ounces measure volume, not weight. One fluid ounce of water happens to weigh about 29.57 grams, but that relationship changes completely with denser or lighter liquids. If a recipe asks for ounces of liquid, it usually means fluid ounces. Weight and volume are not the same thing.
• Using 30 as the conversion factor. Rounding 28.3495 up to 30 is tempting because the math gets easier, but it introduces meaningful error. Over 500 grams, that sloppiness adds up to about 30 grams off. Use 28.35 at minimum.
• Forgetting about troy ounces. If you're ever working with precious metals and find your conversion seems slightly off, check whether the source is using troy ounces (31.1 g) instead of the standard avoirdupois ounce.
• Mixing up grams and milligrams. This one matters most in medical or supplement contexts. A milligram is 1/1000 of a gram. Converting milligrams to ounces requires dividing by 28,349.5, not 28.35.
• Not double-checking the direction of the conversion. Multiplying grams by 28.35 instead of dividing gives you a wildly wrong answer. Grams are smaller than ounces, so a gram value will always convert to a smaller number of ounces, not a larger one.

Most of these mistakes are one-time errors. Make them once, notice the result looks wrong, and you'll remember the right approach going forward.