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How Much Is 2.84 Ounces of Peanut Butter in Cups?

2.84 ounces of peanut butter equals 0.31 cups. That's 80.51g, and Peanut butter has a density of 258g per cup. Because ounces measure weight and cups measure volume, the result depends on the ingredient's density.

2.84 ounces of peanut butter
=
0.31cups
Result using all cup standards info
0.31 cups (US) 0.30 cups (Metric Cup) 0.26 cups (Imperial Cup)
Try: 1 ounce = 0.11 cups 2 ounces = 0.22 cups 3 ounces = 0.33 cups 4 ounces = 0.44 cups
Compare: 2.84 ounces almonds (sliced) = 0.88 cups 2.84 ounces almonds (whole) = 0.56 cups 2.84 ounces cashews = 0.59 cups
Convert a different ingredient
2.84 ounces of peanut butter is also
4.99 tbsp (tablespoons) 2.50 fl oz (fluid ounces) 73.83 ml (milliliters)
0.31

Formula and Step-by-Step

(ounces × 28.35g/oz) ÷ 258g/cup = cups
  1. Start with 2.84 ounces of peanut butter
  2. Convert ounces to grams: 2.84 × 28.35 = 80.51g
  3. 1 cup of peanut butter = 258g
  4. 80.51g ÷ 258g/cup = 0.31 cups

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Peanut butter weighs 258g per cup. Natural and processed versions may have slightly different densities.

Peanut Butter at Different Amounts

How peanut butter scales across common ounces measurements. Your amount (2.84 ounces) is highlighted.

1 oz0.11 cups2 oz0.22 cups2.84 oz0.31 cups3 oz0.33 cups4 oz0.44 cups5 oz0.55 cups6 oz0.66 cups8 oz0.88 cups

Other Amounts of Peanut Butter

Ounces US Cups Metric Cup Imperial Cup
1 ounce 0.11 cups 0.10 cups 0.09 cups
2 ounces 0.22 cups 0.21 cups 0.18 cups
2.84 ounces 0.31 cups 0.30 cups 0.26 cups
3 ounces 0.33 cups 0.31 cups 0.27 cups
4 ounces 0.44 cups 0.42 cups 0.37 cups
5 ounces 0.55 cups 0.52 cups 0.46 cups
6 ounces 0.66 cups 0.62 cups 0.55 cups
8 ounces 0.88 cups 0.83 cups 0.73 cups
10 ounces 1.10 cups 1.04 cups 0.91 cups
12 ounces 1.32 cups 1.25 cups 1.10 cups
16 ounces 1.76 cups 1.66 cups 1.46 cups

Understanding the Units

What is an Ounce?

Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.

What is a Cup?

There are three cup standards used worldwide. The US cup (236.588 ml) is used in American recipes. The metric cup (250 ml) is standard in Australia, New Zealand, and some parts of Asia. The imperial cup (284.131 ml) appears in older British and Canadian recipes. A metric cup holds about 5.7% more than a US cup, while an imperial cup holds about 20% more. Using the wrong standard can noticeably affect a recipe.

Frequently Asked Questions

About 0.31 cups, based on peanut butter having a density of 258g per cup. The exact amount depends on how the ingredient is measured and the specific product.
First convert ounces to grams (1 ounce = 28.3495g), then divide by 258 (grams per cup). For 2.84 ounces: 2.84 × 28.3495 = 80.51g, then 80.51 ÷ 258 = 0.31 cups.
For the most accurate results, weigh peanut butter on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly.
Weight-per-cup values vary because of differences in how the ingredient is measured (spooned vs scooped), grind size, moisture content, and settling during storage. Our values use standardized measurement methods from established culinary references.
Reverse the conversion: 0.31 cups × 258g/cup = 80.51g, then 80.51g ÷ 28.3495 = 2.84 ounces. Or use the Cups to Ounces converter.
person Written by Sean Day verified Reviewed by CookingConvert update Last updated Apr 3, 2026