Convert Mayonnaise from Teaspoon to Ounces

How many ounces is 1 teaspoon of mayonnaise?

1 teaspoon of mayonnaise (mayo) is 0.16 ounces. 2 teaspoons of mayonnaise is 0.32 ounces. 1/2 teaspoon of mayonnaise is 0.08 ounces. 1/4 teaspoon (0.25 teaspoon) of mayonnaise is 0.04 ounces. Use the converter below for any amount.

  • A teaspoon here is the 5 ml standard, the same in the UK, Europe, and Australia. A US teaspoon is fractionally smaller at about 4.9 ml. When teaspoon size matters →
  • A little over or under won't ruin the bake, though it can nudge the final taste or colour.

Mayonnaise is a thick emulsion of oil, egg yolk, and an acid such as vinegar or lemon juice. One metric cup (250 ml) weighs around 230 grams or 8.11 ounces. Most cooks reach for it as a sandwich spread or salad dressing base, but it also keeps cakes and quick breads moist when used in place of oil or sour cream.

Jars of mayonnaise are sold by volume in millilitres or by weight in grams, while recipes mix cups, tablespoons, and grams. Converting between the three saves you over-spooning into a chocolate cake batter that calls for half a cup.

Also known as

  • mayo
  • real mayonnaise

Sour cream is tangier and slightly heavier than mayonnaise (250 g vs 230 g per cup). They swap 1:1 in dressings, slaws, and dips, with mayonnaise giving a richer, less tangy result. In cake batters that lean on sour cream for tenderness, mayonnaise is a workable stand-in since both are mostly fat and water. See what 1 teaspoon of sour cream is in ounces.

Out of mayonnaise? See mayonnaise substitutes →

No measuring spoons? The tool below gets you close, and a measuring spoon set keeps small amounts accurate.

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Mayonnaise Measurement Converter

Enter a value and pick your units.

Result

0.16 Ounces

Common Mayonnaise Conversions

Here are the most common mayonnaise conversions from teaspoons to ounces.

TeaspoonsOunces
0.25 tsp0.04 oz
0.5 tsp0.08 oz
1 tsp0.16 oz
2 tsp0.32 oz
3 tsp0.49 oz
4 tsp0.65 oz
6 tsp0.97 oz
8 tsp1.3 oz
12 tsp1.95 oz

Mayonnaise Conversion Chart

The conversion chart below gives a quick reference for converting mayonnaise from Teaspoon to Ounces and other measurements.

tspouncescupgramscup(US)tbsp
1 tsp0.16 oz0.02 cup4.6 g0.02 cup (US)0.33 tbsp
2 tsp0.32 oz0.04 cup9.2 g0.04 cup (US)0.67 tbsp
3 tsp0.49 oz0.06 cup13.8 g0.06 cup (US)1 tbsp
4 tsp0.65 oz0.08 cup18.4 g0.08 cup (US)1.33 tbsp

For the reverse conversion, see 1 ounce of mayonnaise in teaspoons.

Frequently Asked Questions

What is 1 teaspoon of mayonnaise in ounces?
1 teaspoon of mayonnaise is 0.16 ounces. The ratio is fixed, so 2 teaspoons of mayonnaise is 0.32 ounces and 0.5 teaspoons is 0.08 ounces. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the mayonnaise converter
How many ounces is 1.5 teaspoons of mayonnaise?
1.5 teaspoons of mayonnaise is 0.24 ounces. The ratio is fixed, so 1 teaspoon of mayonnaise is 0.16 ounces and 2 teaspoons is 0.32 ounces. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
What is 2 teaspoons of mayonnaise in ounces?
2 teaspoons of mayonnaise is 0.32 ounces. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 teaspoon of mayonnaise is 0.16 ounces, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact ounces reading.
How many teaspoons of mayonnaise is 0.16 ounces?
0.16 ounces of mayonnaise is 0.99 teaspoons. The conversion works the same in reverse, so you can switch between ounces and teaspoons without changing the result. This helps when a recipe lists teaspoons but you would rather weigh or measure in ounces. The converter above and the chart below cover both directions for any amount.
How much is 1 teaspoon of mayo in ounces?
Mayo is another name for mayonnaise, so 1 teaspoon of mayo is 0.16 ounces, exactly the same as mayonnaise. The figure does not change with the name: 2 teaspoons is 0.32 ounces and 0.5 teaspoons is 0.08 ounces. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are mayonnaise and mayo the same thing?
Yes. Mayo is another name for mayonnaise, so they are the same ingredient and convert identically. 1 teaspoon of mayonnaise is 0.16 ounces under either name, and 2 teaspoons is 0.32 ounces. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.
What is 1/2 tsp mayonnaise in ounces?
1/2 teaspoon of mayonnaise is 0.08 ounces. The ratio is fixed, so 1 teaspoon of mayonnaise is 0.16 ounces and 2 teaspoons is 0.32 ounces. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart below for the common ones.
What is 1/4 tsp mayonnaise in ounces?
1/4 teaspoon (0.25 teaspoon) of mayonnaise is 0.04 ounces. The ratio is fixed, so 1 teaspoon of mayonnaise is 0.16 ounces and 2 teaspoons is 0.32 ounces. Quarter amounts often come up when scaling a recipe down step by step, and the figure divides cleanly. Use the converter above for any other quantity, or the chart below for the most common amounts.

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