One cup of vinegar is 8.4304769 ounces, so converting cups of vinegar to ounces means multiplying by 8.4304769. That factor is specific to this ingredient — it comes from its density, not from any relationship between the two units.
The density behind that figure is 1.0102 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of vinegar weighs 239 g, so this ingredient is 101% as heavy as the same volume of water — the single fact the whole page rests on.
A cup of vinegar is 239 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 237.8 g and 241.4 g covers the range from lightly spooned to firmly packed. That 1% spread is larger than most of the adjustments recipes fuss over, and it disappears entirely the moment the ingredient is weighed instead.
One cup of vinegar is 8.43 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 1.48% of a cup of this ingredient, so the scale is precise enough for a full cup and coarse for a spoonful. That is why recipes mix the two systems: ounces for the bulk, spoons for the small amounts.
The condition this weight assumes: Mostly water with 4 to 8% acetic acid, so its density is barely different from water.
The formula
cups- The amount of vinegar you are converting, in cups
8.43047690595- Ounces per cup for vinegar, from its density of 1.0102 g/mL
ounces- The equivalent quantity in ounces
How it works, step by step
- Enter the quantity in cups.
- It is multiplied by 8.43047690595, the ounces-per-cup figure for vinegar.
- The result appears in ounces, with a second reading in g beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
1/3 cup of vinegar in ounces
A recipe calling for 1/3 cup of vinegar needs 2.81016 ounces on the scale. The arithmetic is 0.333333 × 8.4304769 = 2.810159, and halving the recipe halves the weight to 1.40508 ounces.
3/4 cup of vinegar in ounces
A recipe calling for 3/4 cup of vinegar needs 6.32286 ounces on the scale. The arithmetic is 0.75 × 8.4304769 = 6.3228577, and halving the recipe halves the weight to 3.16143 ounces.
3 cup of vinegar in ounces
3 cup of vinegar weighs out at 25.2914 ounces. Divide 25.2914 by 8.4304769 and you get back to 3 cup, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many ounces are in 1 cup of vinegar?
One cup of vinegar is 8.4304769 ounces. Half that quantity is 4.21524 ounces and double it is 16.861 ounces, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of vinegar not 236 g like water?
Because weight per cup depends on what is in the cup. Vinegar has a density of 1.0102 g per mL where water has 1.00, so a cup of it weighs 239 g rather than 236.6 g. That is a difference of 2.4 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Barely. Vinegar does not compress, so a cup of it is 239 g however it is poured — within about 1%, which is inside the accuracy of a domestic scale. This is the group where measuring by volume is defensible.
Is a fluid ounce of vinegar the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of vinegar weighs 1.054 oz, so the two readings differ by 5.38%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of vinegar would weigh 252.55 g instead of 239 g — 13.5 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
A scale, if the result matters. Volume measuring carries a spread of about 1% for vinegar — roughly 2.39 g on a 239 g cup — while a domestic scale is accurate to a gram or two. For anything where the ratio of ingredients drives the outcome, bread and pastry above all, weigh it.
How many cups of vinegar is 16 oz?
16 oz of vinegar is 1.8979 cups — 0.118617 cups to one ounce, so 16 × 0.118617 = 1.8979. Going that way is a division by 8.43048, or a multiplication by 0.118617 if you prefer.
Vinegar in cups and ounces
| Cups | Ounces | Unrounded |
|---|---|---|
| 1/8 cup | 1.05381 oz | 1.053809613 |
| 1/4 cup | 2.10762 oz | 2.107619226 |
| 1/3 cup | 2.81016 oz | 2.810158969 |
| 1/2 cup | 4.21524 oz | 4.215238453 |
| 2/3 cup | 5.62032 oz | 5.620317937 |
| 3/4 cup | 6.32286 oz | 6.322857679 |
| 1 cup | 8.43048 oz | 8.430476906 |
| 1 1/2 cup | 12.6457 oz | 12.64571536 |
| 2 cup | 16.861 oz | 16.86095381 |
| 3 cup | 25.2914 oz | 25.29143072 |
| 4 cup | 33.7219 oz | 33.72190762 |
Based on 239 g per cup of vinegar. One cup of vinegar is 8.4304769 ounces.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 239 g | 8.43 oz | 236.6 mL |
| 3/4 cup | 179.2 g | 6.32 oz | 177.4 mL |
| 2/3 cup | 159.3 g | 5.62 oz | 157.7 mL |
| 1/2 cup | 119.5 g | 4.22 oz | 118.3 mL |
| 1/3 cup | 79.67 g | 2.81 oz | 78.86 mL |
| 1/4 cup | 59.75 g | 2.11 oz | 59.15 mL |
| 1 tbsp | 14.94 g | 0.527 oz | 14.79 mL |
| 1 tsp | 4.979 g | 0.176 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Cream cheese | 227 g | 8.007 oz | 0.9595 |
| Water | 236 g | 8.325 oz | 0.9975 |
| Heavy cream | 238 g | 8.395 oz | 1.006 |
| Vinegar (this page) | 239 g | 8.43 oz | 1.01 |
| Sour cream | 240 g | 8.466 oz | 1.014 |
| Tahini | 240 g | 8.466 oz | 1.014 |
| Half-and-half | 242 g | 8.536 oz | 1.023 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.