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How Much Is 5 Cups of Peanut Butter in Ounces?

5 cups of peanut butter equals 45.50 oz. Peanut butter has a density of 258g per cup (258g per cup), which means it's relatively heavy compared to other common cooking ingredients. For comparison, 5 cups of all-purpose flour would be 22.07 oz.

5 cups of peanut butter
=
45.50oz
Result using all cup standards info
45.50 oz (US) 48.08 oz (Metric Cup) 54.65 oz (Imperial Cup)
5 cups of peanut butter is also
45.50

Formula and Step-by-Step

cups × 258g/cup ÷ 28.3495g/oz = ounces
  1. Start with 5 cups of peanut butter
  2. 1 cup of peanut butter = 258g
  3. 5 × 258 = 1,290g
  4. Convert grams to ounces: 1,290 ÷ 28.3495 = 45.50 oz

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 cups measurements. Your amount (5 cups) is highlighted.

0.5 cups4.55 oz0.75 cups6.83 oz1 cup9.10 oz1.5 cups13.65 oz2 cups18.20 oz3 cups27.30 oz4 cups36.40 oz5 cups45.50 oz

For reference, 5 cups of peanut butter (1,290g) is close in weight to a bottle of wine (1,200g).

Other Amounts of Peanut Butter

Cups US Ounces Metric Cup Imperial Cup
0.25 cups 2.28 oz 2.40 oz 2.73 oz
0.33 cups 3.00 oz 3.17 oz 3.61 oz
0.5 cups 4.55 oz 4.81 oz 5.46 oz
0.75 cups 6.83 oz 7.21 oz 8.20 oz
1 cup 9.10 oz 9.62 oz 10.93 oz
1.5 cups 13.65 oz 14.42 oz 16.39 oz
2 cups 18.20 oz 19.23 oz 21.86 oz
3 cups 27.30 oz 28.85 oz 32.79 oz
4 cups 36.40 oz 38.47 oz 43.72 oz
5 cups 45.50 oz 48.08 oz 54.65 oz

Understanding the Units

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

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.

Frequently Asked Questions

About 45.50 oz, 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.
Multiply the number of cups by 258 (grams per cup for peanut butter), then divide by 28.3495 to convert grams to ounces. For 5 cups: 5 × 258 = 1,290g, then 1,290 ÷ 28.3495 = 45.50 oz.
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: 45.50 oz × 28.3495 = 1,290g, then 1,290g ÷ 258 = 5 cups. Or use the Ounces to Cups converter.