Convert Mayonnaise — Cups, Grams & Ounces
A US cup of mayonnaise (also called mayo) weighs 220 g. Working back the other way, 100 g is about 1/2 cup and 250 g is about 1 1/8 cups. Use the calculator for any amount in between.
💡 Tip: Spoon it in and level the top; mayo traps air, so a firm fill gives a truer gram weight
Converting grams of mayonnaise back to cups
| Grams | Amount | Ounces |
|---|---|---|
| 50 | 1/4 cup | 1.76 |
| 100 | 1/2 cup | 3.53 |
| 113 | 1/2 cup | 3.99 |
| 150 | 2/3 cup | 5.29 |
| 170 | 3/4 cup | 6 |
| 200 | 7/8 cup | 7.05 |
| 225 | 1 cup | 7.94 |
| 250 | 1 1/8 cups | 8.82 |
| 300 | 1 3/8 cups | 10.6 |
| 400 | 1 7/8 cups | 14.1 |
| 500 | 2 1/4 cups | 17.6 |
Mayo jar sizes in cups
Mayo jars are labelled in fluid ounces, and 8 fl oz = 1 cup. So a standard jar of mayo holds:
| Jar size | Cups (approx) |
|---|---|
| 15 fl oz | ~1⅞ cups |
| 30 fl oz | ~3¾ cups |
| 48 fl oz | ~6 cups |
How many grams in a cup of mayonnaise?
| Cups | Grams | Ounces |
|---|---|---|
| 1/4 | 55 | 1.94 |
| 1/3 | 73.3 | 2.59 |
| 1/2 | 110 | 3.88 |
| 2/3 | 147 | 5.17 |
| 3/4 | 165 | 5.82 |
| 1 | 220 | 7.76 |
| 1 1/4 | 275 | 9.7 |
| 1 1/2 | 330 | 11.6 |
| 2 | 440 | 15.5 |
For smaller amounts: a tablespoon of mayonnaise is about 13.8 g, and a teaspoon about 4.58 g. See the full tablespoon chart for mayonnaise.
Is mayonnaise heavy or light for its category?
At 220 g per cup, mayonnaise is the lightest of the 14 liquids & dairy charted on this site. At the other end of the range, greek yogurt weighs 250 g — 14% more for the very same cup.
Swapping these by the cupful is not like-for-like. A cup of cottage cheese in place of mayonnaise puts roughly 5 g more in the bowl, so match the grams rather than the cups.
Common questions about measuring mayonnaise
- How many cups is 100g of mayonnaise?
- 100 g of mayonnaise works out at roughly 1/2 cup.
- How many cups of mayo are in a 30 oz jar?
- A 30 fl oz jar of mayo holds about 3¾ cups (8 fl oz = 1 cup).
- How many cups is a 15 oz jar of mayo?
- About 1⅞ cups — close to 2 cups.
- How many grams is 1 cup of mayonnaise?
- 1 US cup of mayonnaise weighs about 220 grams, or 7.76 ounces.
- How many cups is 170g of mayonnaise?
- About 3/4 cup — that is 170 divided by the 220 g a cup weighs.
- How many cups is 225g of mayonnaise?
- 225 g of mayonnaise works out at roughly 1 cup.
- How many cups is 250g of mayonnaise?
- 250 g of mayonnaise works out at roughly 1 1/8 cups.
- How many grams is ½ cup of mayonnaise?
- Half a US cup of mayonnaise is about 110 grams.
- Why do my numbers differ slightly?
- Thickness and air change the reading. A thick dairy product traps air when it is spooned in and settles when it is stirred or pressed level, so two cups measured the same way can still differ.