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Mayonnaise

One US cup of mayonnaise is estimated at 226 grams using our reference. How you fill the cup matters.

Maintained by cookingconversion.co · Updated September 26, 2026 · Sources checked September 26, 2026

Reference ingredient

226 g per US cup

Mayonnaise · Full-fat mayonnaise, spooned and levelled

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Ingredient

Full-fat mayonnaise, spooned and levelled

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50 grams of mayonnaise is about

0.22

US cups

Approximate recipe equivalent for Mayonnaise. Ingredient preparation and measuring technique affect the result.

Reference: 226 g per 236.5882 ml US reference cup. More precision: 0.2212 US cups.

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Mayonnaise conversions at a glance

Reference: 226 grams per US cup, full-fat mayonnaise, spooned and levelled. Values are approximate.

Grams of mayonnaise to US cups
Mayonnaise weight	US cups	Kitchen measure
30 g	0.13	a little over ⅛ cup
50 g	0.22	a little under ¼ cup
100 g	0.44	a little under ½ cup
120 g	0.53	a little over ½ cup
150 g	0.66	⅔ cup
200 g	0.88	about 0.88 cups
250 g	1.11	a little under 1 ⅛ cups

Cups of mayonnaise to grams
Cups	US cup (236.59 ml) → g	Metric cup (250 ml) → g
0.25 cups	56.5	59.7
0.3333 cups	75.33	79.6
0.5 cups	113	119.41
0.6667 cups	150.67	159.21
0.75 cups	169.5	179.11
1 cup	226	238.81
2 cups	452	477.62

Spoons of mayonnaise to grams by system
Spoon	US (14.79 / 4.93 ml)	Metric (15 / 5 ml)	Australian (20 / 5 ml)
1 tbsp	14.13	14.33	19.1
1 tsp	4.71	4.78	4.78

Mayonnaise amounts people look up

The measures most often searched for this ingredient, converted with the reference above.

Searched mayonnaise amounts in grams, US cups and ounces (approximate recipe equivalents)
Amount	Grams	US cups	Ounces (weight)
¼ US cup	56.5 g	0.25 US cups	1.993 oz
½ US cup	113 g	0.5 US cups	3.986 oz
1 US cup	226 g	1 US cups	7.9719 oz

Mayonnaise cups to grams: about 226 grams per US cup

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How to convert mayonnaise

Our reference is 226 grams per US reference cup of mayonnaise, full-fat mayonnaise, spooned and levelled. That works out to about 0.9552 grams per millilitre, so cups = grams ÷ 226 and grams = cups × 226 in US customary measures.

For metric and Australian recipes the cup holds 250 ml, so one cup of mayonnaise is about 238.81 grams. Australian tablespoons hold 20 ml rather than 15 ml, which the calculator handles when you pick that system.

Preparation changes the weight

The reference describes mayonnaise as: full-fat mayonnaise, spooned and levelled. A different form, such as sifted, packed, melted, chopped or cooked, can hold a different weight in the same cup and needs its own reference. When a recipe gives a gram amount, weigh that amount instead of converting.

Brand, moisture and how firmly the cup is filled all move the practical result. Treat the numbers here as recipe equivalents, not laboratory densities.

Where the number comes from

The reference comes from King Arthur Baking ingredient weight chart, which lists 1/2 cup as 113 grams. Published recipe weight, normalised to one reference cup. This site assigns the published cup weight to its adopted US reference cup of 236.5882365 ml; the source itself does not define an exact millilitre cup volume. Checked September 26, 2026.

A few useful answers

Kitchen questions, answered.

How many grams are in a cup of mayonnaise?

About 226 grams per US customary cup (full-fat mayonnaise, spooned and levelled), or about 238.81 grams per 250 ml metric cup, using our reference.

How many cups are 100 grams of mayonnaise?

About 0.44 US cups. Use the calculator for any other amount or cup system.

Can I substitute a similar ingredient?

A measurement conversion does not establish a recipe substitution. Two ingredients can weigh the same per cup and still behave differently in a recipe; follow the recipe author's substitution guidance.

Sources behind the numbers

Sources checked September 26, 2026. Ingredient values are recipe equivalents, not laboratory densities.