Grams in an Ounce: The Full Chart

1 ounce comes to 28.3 grams. The chart covers the amounts people actually look for, and each has its own line further down the page.

Ounces to grams: full chart

The amounts that come up most

1 ounce is 28.3 grams. That is 28.3 multiplied by 1, since 1 ounce is 28.3 grams. Per single unit that is 28.3 grams, the ratio every row on this page is built from. Anyone halving the batch needs 1/2 ounce, which is 14.2 grams. 2 ounces is 56.7 grams.

2 of these makes 56.7, counting from the 1 ounce figure of 28.3 grams. Three times this is 170 grams, and ten times is 567 grams. 3 ounces is 85 grams. Take the 1 ounce figure of 28.3 grams and multiply by 3 to get there.

Per single unit that is 28.3 grams, the ratio every row on this page is built from. On a shopping list it is the 85 grams that decides the packet, not the 3 ounces. 4 ounces is 113 grams. That is 28.3 multiplied by 4, since 1 ounce is 28.3 grams.

The step from here to 5 ounces is 28.3 grams. A recipe asking for 4 ounces wants 113 grams in the measure, not an estimate of it. 6 ounces is 170 grams. Take the 1 ounce figure of 28.3 grams and multiply by 6 to get there.

Per single unit that is 28.3 grams, the ratio every row on this page is built from. A recipe asking for 6 ounces wants 170 grams in the measure, not an estimate of it. 8 ounces is 227 grams. Working from 1 ounce is 28.3 grams, 8 scales to 227.

Three times this is 680 grams, and ten times is 2,268 grams. 12 ounces is 340 grams. 12 of these makes 340, counting from the 1 ounce figure of 28.3 grams. A quarter of it comes to 85 grams and three quarters to 255 grams.

On a shopping list it is the 340 grams that decides the packet, not the 12 ounces. 16 ounces is 454 grams. Working from 1 ounce is 28.3 grams, 16 scales to 454. Add the same again and you are at 907 grams; take one away and you are back to 425 grams.

How to work it out without a calculator

To go from ounces to grams, multiply by 28. One ounce is 28.3 grams. Scale the amount up or down and the same step still works. Going back the other way, one gram returns 0.035 ounce. Both units are fixed by definition, not by how you scoop.

Following it through once

Say a batch you are making for a crowd asks for 4 ounces, and your equipment is only marked in grams. Take the one-ounce figure of 28.3 grams and apply it 4 times: 113 grams. Measure that out and you are done.

Both units answer to the same standard, so the step never shifts.

Why this figure never moves

This one is fixed by definition rather than measured, so it carries no rounding and no dependence on what is being weighed. One ounce is exactly 28.3 grams, and every row above is that one ratio multiplied out.

The metric units are defined against each other in powers of ten, which is why none of these rows needs a repeating decimal.

The troy ounce is a different unit

Gold and silver are weighed in troy ounces at 31.10 g each, against 28.35 g for the ounce used for food. Nothing in a kitchen uses the troy ounce.

What moves this number

Only a misread scale or a misplaced decimal. The conversion itself has no room to move.

Where a recipe disagrees with the chart, follow the recipe — the writer measured, the chart calculated.

Going the other way: grams to ounces

One gram comes back to 0.035 ounce, so the two directions are reciprocals of each other: multiply by 28.3 going out and divide by it coming back.

The reverse figure matters most when a recipe and a packet disagree: 0.035 ounce per gram settles it.

Measuring it properly

For very small amounts, weigh a larger batch and divide it. Two grams measured directly sits at the limit of a domestic scale; twenty grams split into ten does not.

A kitchen scale settles this outright. Put the empty container on, press tare so it reads zero, then add until you reach the figure.

Weigh on a hard, level surface. A scale standing on a folded cloth or an uneven hob reads differently every time it is set down.

Let the reading settle before trusting it. Most kitchen scales take a second to stop climbing, and the figure they show first is not the figure they mean.

When you can round and when you cannot

Anything that has to react — yeast, baking soda, gelatin — works as a proportion of everything around it. Round those and you have changed the proportion, not merely the amount.

Round the same way every time you make the dish. Consistency beats accuracy here, because a result you can repeat is a result you can adjust next time.

Where a recipe gives an odd figure it usually got there by conversion rather than by choice. Rounding it back to the round number it started as is often closer to the intent than the decimal.

Round freely for anything savoury you can taste and adjust. Keep the decimal for baking, brining and anything involving yeast, where the ratio rather than the amount is doing the work.

Where this usually goes wrong

Rounding at every step instead of once at the end. Three roundings through a chain of units drift further than any single one of them did.

Reading a figure meant for a different scale of measurement. A number quoted in grams and used as kilograms is out by a thousand, and the mistake looks perfectly reasonable on the page.

Forgetting to tare after setting the bowl down. The container weight rides along in every reading afterwards, and it is a constant error rather than a random one.

Trusting a scale below its useful floor. Under a few grams most kitchen scales round to the nearest step and show a tidy number that was never measured.

Why this one gets looked up

Translating a recipe usually leaves the units alone, so 1 ounce is 28.3 grams is the part still left to work out.

Batch cooking for the freezer is where the arithmetic starts. 1 ounce is 28.3 grams, and every later quantity is a multiple of that.

Anyone moving a recipe into a smaller tin meets this first. 1 ounce is 28.3 grams, and the rest of the scaling follows once that is settled.

Anyone cooking along with a video is converting on the fly. 1 ounce is 28.3 grams is worth having settled before the pan is hot.

Halving and doubling

Half of 1 ounce is 14.2 grams. Double it and you have 56.7 grams; triple it and you are at 85 grams. A batch cut to a quarter needs 7.09 grams.

The relationship is a straight multiple all the way through, so any factor scales the same way.

One and a half batches come to 42.5 grams, six times to 170 grams and a dozen to 340 grams. Cut to a third it is 9.45 grams.

The exact number against the practical one

The exact figure for 1 ounce is 28.3. Written the way most cooks would write it, 28 grams, it is out by 0.35 — about 1.2 per cent. On one batch that is invisible.

Scaled four times the gap is 1.4, which is where it starts to show in anything that has to set.

The quantities that come up most

Recipes rarely ask for round numbers. 1/4 ounce comes to 7.09 grams; 1/2 ounce comes to 14.2 grams; 3/4 ounce comes to 21.3 grams.

Larger batches follow the same line: 1 1/2 ounces comes to 42.5 grams; 2 1/2 ounces comes to 70.9 grams.

Write the converted figure onto the recipe itself. The next time you make it, the sum is already done.

Ounces to Grams Conversion Formula

To convert a weight in ounces, multiply the ounce amount by 28.3. The result is the equivalent weight in grams. Write the units beside the calculation so volume and weight cannot be confused.

For a decimal ounce amount, keep the decimal intact while multiplying. Do not treat the digits after the decimal point as a separate fraction. That mistake can produce a result far from the intended quantity.

If your recipe gives a mixed number, convert the fractional part to a decimal before applying the formula. Enter the complete ounce value into the calculator rather than converting its parts independently.

A kitchen scale makes the converted value useful. Put the empty bowl on the scale, use the tare function, switch to grams, then add the ingredient until the display reaches the calculated weight.

Taring matters because the conversion describes the ingredient, not the container. Forgetting to remove the bowl’s weight makes the measured portion too small, especially with a heavy mixing bowl or pan.

Use mass ounces, not fluid ounces. A fluid ounce measures volume, while the formula converts weight. A liquid marked in fluid ounces needs a volume conversion or an ingredient-specific weight, depending on the recipe.

Cups create the same problem. Cup standards differ, and equal cup volumes of flour, sugar, oil, and water do not weigh alike. Convert a stated ounce weight directly; do not route it through cups.

For the reverse calculation, multiply grams by 0.035. This is useful when a scale shows grams but a recipe or label requires ounces. Keep the original gram reading visible so you can check the entry.

Rounding should happen after the calculation, not before it. Early rounding compounds error when a batch is scaled, several ingredients are converted, or small amounts strongly affect flavour and texture.

Match the final precision to the scale. If its display cannot show the calculated detail, choose the nearest value it can measure. Retain more precision in your notes for later scaling.

Do not assume the converted weight must look similar to the ounce figure. Grams use a smaller unit, so the written amount changes substantially even though the physical quantity stays identical.

Check suspicious results by estimating direction rather than memorising another constant. Ounces converted to grams should produce a larger numeral; grams converted to ounces should produce a smaller numeral.

Ingredient labels can help verify the result, provided the label reports net weight rather than serving volume. Compare like units and confirm that the decimal point was entered in the correct place.

Weight Ounces Versus Fluid Ounces

Weight ounces and fluid ounces measure different things. A weight ounce belongs on a scale. A fluid ounce belongs in a jug or measuring spoon. Use grams for weight conversions, not for liquid volume markings.

This matters because ingredients do not share the same density. A fluid ounce of water weighs close to its volume expectation, but oil, honey, cream, flour, and chopped nuts do not behave the same way.

If a recipe says ounces for flour, sugar, butter, cheese, meat, chocolate, or nuts, treat it as weight unless the recipe clearly says fluid ounces. Put the bowl on the scale, tare it, and weigh the ingredient.

If a recipe says fluid ounces for milk, stock, cream, wine, or oil, use a liquid measure. Do not convert that amount with an ounces-to-grams chart unless you also know the ingredient’s density.

The common mistake is reading “oz” as “fl oz”. That can ruin baking fastest. Flour measured by volume packs differently depending on scooping, settling, and humidity. The same marked volume can give a different weight each time.

Butter is another common trap. Some packaging shows weight ounces, while measuring jugs show fluid ounces. Melted butter in a jug and solid butter on a scale are not interchangeable unless the recipe gives the method clearly.

For dry goods, the scale is usually the safer tool. It removes guessing from spooning, levelling, chopping size, and air gaps. This is why grams are useful in baking: they describe the actual amount in the bowl.

For liquids, the measuring jug is often practical, especially in sauces, soups, and drinks. Read it at eye level on a flat surface. A tilted jug or a high viewing angle gives a false line.

Use the wording in the recipe as your first clue. “Ounces” beside meat, flour, chocolate, or cheese usually means weight. “Fluid ounces” beside water, stock, or juice means volume. If the recipe uses “fl oz”, do not use the weight chart.

Imported recipes add another source of error. Cup sizes and labelling customs vary, and ounces may appear beside both weights and liquids. If precision matters, follow the unit type before converting anything.

The practical rule is simple: weigh solids and thick ingredients when the recipe gives ounces; measure pourable liquids when it gives fluid ounces. Convert only weight ounces to grams.

Leave fluid ounces as volume unless a tested recipe gives the gram weight.

Ounce to Gram Reference Table

Use the reference table as a cooking shortcut, not as a maths exercise. Find the ounce amount in the left column, then weigh the matching gram amount on your scale. This keeps the recipe moving and avoids mental arithmetic with sticky hands.

For dry ingredients, weigh the grams directly into the bowl. Flour, cocoa, sugar, nuts, grated cheese, and chopped chocolate all pack differently in cups and spoons. The table gives you a steadier result than scooping by eye.

Start with an empty bowl on the scale, press tare, then add the ingredient until the display matches the chart. Tare again before the next ingredient.

This keeps each addition separate and prevents one small weighing error from spreading through the whole recipe.

Use 0.25 ounces and 0.5 ounces for small flavouring ingredients where the amount still matters. Spices, yeast, gelatine, salt, and leavening agents can change texture or taste quickly. A casual pinch can be too little or too much.

For larger amounts, use the nearest row in the chart and weigh once. Do not build a large weight from repeated small spoonfuls unless your scale is slow to respond. Repeated additions invite overshooting, especially with fine powders.

If your scale shows whole grams only, use the gram value shown in the table and stop at the closest display reading. Do not switch between ounces and grams midway through a recipe. Pick one unit system and stay with it.

Check whether the recipe means weight before using this table. Ounce weights belong on a scale. Liquid measures belong in a jug. The same word can appear in both contexts, and using the wrong tool is a common cause of dense cakes and thin batters.

For butter, chocolate, cheese, and meat, trim the ingredient to the gram amount after checking the table. For powders and grains, pour slowly near the end. The last small shake matters more than it looks on a digital display.

Do not assume packaged food is exact enough for baking. A labelled block or bag may not divide cleanly into recipe portions. Weigh the part you use, especially after cutting, grating, melting, or reserving some for topping.

If a recipe gives both units, follow the one that looks more deliberate for the source. Professional baking recipes often treat grams as the working measure. Older household recipes may have ounces first.

The table helps you standardise without changing the recipe.

Keep the chart near your scale, not buried in a drawer. The useful habit is fast lookup, tare, weigh, and move on. That prevents rough conversions, overfilled cups, and repeated corrections once the mixture is already combined.

Measuring Ingredients Accurately by Weight

Use a digital kitchen scale for any ingredient where precision affects texture, set, or seasoning. Flour, sugar, butter, chocolate, nuts, cheese, and salt all pack differently by volume, so weight gives the cook a repeatable result.

Place the mixing bowl or a small dish on the scale before adding food. Press tare so the display returns to zero. Add the ingredient slowly, then stop as soon as the target weight appears.

If the scale overshoots, remove a little with a spoon rather than tipping the bowl. Tipping often removes too much, especially with flour, cocoa, yeast, spices, and fine salt.

For sticky ingredients, weigh into a lightly oiled spoon, paper, or small cup set on the scale. This keeps honey, syrup, nut butter, and soft cheese from clinging to the main bowl and changing the measured amount.

For chopped ingredients, cut first and weigh after cutting. A whole piece may look close, but trimming, peeling, grating, or chopping changes what actually goes into the recipe.

For flour, do not scoop with the measuring cup and then convert the cup measure. Scooping compresses flour unevenly. If the recipe gives ounces, use the ounce amount and the chart, then weigh the gram amount directly.

For butter, use the wrapper marks only as a quick guide. Wrappers shift, sticks vary by region, and softened butter smears. Put the bowl on the scale, tare it, and add butter until the display matches the converted weight.

For small quantities, use a scale that responds clearly to gram changes. A large postal-style scale may lag or jump, which matters with yeast, baking powder, spices, coffee, and salt.

Check the scale unit before measuring. Many kitchen mistakes come from leaving the display in ounces after converting to grams, or from reading the wrong unit while adding ingredients quickly.

Keep the scale on a flat, stable surface, away from a mixer, hot hob, or crowded bench. Vibration, heat, and a tilted base can make the reading drift while the ingredient is being added.

Weigh each ingredient separately if the recipe is unfamiliar. Taring between additions is efficient, but a mistake late in the bowl is hard to remove. Separate weighing protects expensive ingredients and avoids unbalanced doughs or batters.

Other ways this gets asked

The same question is typed in these ways, and the chart above covers every one:

For every kitchen figure in one place, see the full conversion chart.

Sources

• NIST Handbook 44, Appendix C: General Tables of Units of Measurement
• King Arthur Baking, Ingredient Weight Chart

By ingredient

The answer changes with what is being measured. These pages give the figure for one ingredient each:

• Troy Ounces to Grams Chart

Related conversions

• Troy Ounces to Grams Chart
• How Many Milligrams Are in an Ounce?
• Convert Kilograms to Grams