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How Much Is 1.1 Cups of Peanut Butter in Ounces?

1.1 cups of peanut butter equals 10.01 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, 1.1 cups of all-purpose flour would be 4.86 oz.

1.1 cups of peanut butter
=
10.01oz
Result using all cup standards info
10.01 oz (US) 10.58 oz (Metric Cup) 12.02 oz (Imperial Cup)
1.1 cups of peanut butter is also
10.01

Formula and Step-by-Step

cups × 258g/cup ÷ 28.3495g/oz = ounces
  1. Start with 1.1 cups of peanut butter
  2. 1 cup of peanut butter = 258g
  3. 1.1 × 258 = 283.8g
  4. Convert grams to ounces: 283.8 ÷ 28.3495 = 10.01 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 (1.1 cups) is highlighted.

0.33 cups3.00 oz0.5 cups4.55 oz0.75 cups6.83 oz1 cup9.10 oz1.1 cups10.01 oz1.5 cups13.65 oz2 cups18.20 oz3 cups27.30 oz

For reference, 1.1 cups of peanut butter (283.8g) is close in weight to a can of soup (305g).

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
1.1 cups 10.01 oz 10.58 oz 12.02 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?

The US cup (236.588 ml) is slightly smaller than the metric cup used in Australia and some other countries (250 ml). When following recipes from different countries, check which cup standard is being used.

What is an Ounce?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

Frequently Asked Questions

About 10.01 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 1.1 cups: 1.1 × 258 = 283.8g, then 283.8 ÷ 28.3495 = 10.01 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: 10.01 oz × 28.3495 = 283.8g, then 283.8g ÷ 258 = 1.1 cups. Or use the Ounces to Cups converter.