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Mayonnaise — Cups in Ounces
How many ounces of mayonnaise in 1 cup?
1 cup of mayonnaise equals 8.11 ( ~ 8 1/8) ounces*
About mayonnaise measurements
Mayonnaise is an oil-in-water emulsion, and the reference density here is about 0.97 g/ml, or roughly 230 g per cup. Light mayo is thinned with water and whipped air, so it spoons lighter than full-fat; pressing it firmly into the measure squeezes out pockets and steadies the weight.
Cups of mayonnaise equivalent in ounces?

FAQs on mayonnaise volume to weight conversion
1 cup of mayonnaise equals how many ounces?
1 cup of mayonnaise is equivalent 8.11 ( ~ 8 1/8) ounces.
How much is 8.11 ounces of mayonnaise in cups?
8.11 ounces of mayonnaise equals 1 cup.
US cups to Ounces of Mayonnaise Conversion Chart
Note: Fractions are rounded to common recipe fractions (1/8, 1/4, 1/3, 1/2, 2/3, 3/4…). Values are rounded to 3 significant figures.
| US cups to ounces of Mayonnaise | |
|---|---|
| 0.507 ( ~ 1/2 ) ounces | |
| 1.01 ( ~ 1 ) ounces | |
| 2.03 ( ~ 2 ) ounces | |
| 2.7 ( ~ 2 2/3 ) ounces | |
| 4.06 ( ~ 4 ) ounces | |
| 5.41 ( ~ 5 1/3 ) ounces | |
| 6.08 ( ~ 6 1/8 ) ounces | |
| 1 US cup | 8.11 ( ~ 8 1/8 ) ounces |
| 1 | 8.62 ( ~ 8 2/3 ) ounces |
| 1 | 9.13 ( ~ 9 1/8 ) ounces |
| 1 | 10.1 ( ~ 10 1/8 ) ounces |
| 1 | 10.8 ( ~ 10 3/4 ) ounces |
| 1 | 12.2 ( ~ 12 1/8 ) ounces |
| 1 | 13.5 ( ~ 13 1/2 ) ounces |
| 1 | 14.2 ( ~ 14 1/4 ) ounces |
| 2 US cups | 16.2 ( ~ 16 1/4 ) ounces |
| 2 | 16.7 ( ~ 16 3/4 ) ounces |
| 2 | 17.2 ( ~ 17 1/4 ) ounces |
| 2 | 18.3 ( ~ 18 1/4 ) ounces |
| 2 | 18.9 ( ~ 19 ) ounces |
| 2 | 20.3 ( ~ 20 1/4 ) ounces |
| 3 US cups | 24.3 ( ~ 24 1/3 ) ounces |
| 4 US cups | 32.4 ( ~ 32 1/2 ) ounces |
| 5 US cups | 40.6 ( ~ 40 1/2 ) ounces |
| 6 US cups | 48.7 ( ~ 48 2/3 ) ounces |
| 8 US cups | 64.9 ( ~ 65 ) ounces |
| 10 US cups | 81.1 ( ~ 81 1/8 ) ounces |
References:
Popular Volume to Weight Conversions
A note on cooking ingredients measurements
Notes: results are rounded (by default) to 3 significant figures. Cooking conversions use standard ingredient densities — the exact weight varies slightly with the brand and how tightly the ingredient is packed ☺.