swap_horiz Need Grams to Cups instead?

How Much Is 1.5 Cups of Peanut Butter in Grams?

1.5 cups of peanut butter weighs 387.00 g. This is based on peanut butter having a density of 258g per cup. Because cups measure volume and grams measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 1.5 cups.

1.5 cups of peanut butter
=
387.00g
Result using all cup standards info
387.00 g (US) 408.94 g (Metric Cup) 464.77 g (Imperial Cup)
1.5 cups of peanut butter is also
387.00

Formula and Step-by-Step

cups × 258g/cup = grams
  1. Start with 1.5 cups of peanut butter
  2. 1 cup of peanut butter = 258g
  3. 1.5 × 258 = 387g

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 (1.5 cups) is highlighted.

0.33 cups85.14 g0.5 cups129 g0.75 cups193.5 g1 cup258 g1.5 cups387 g2 cups516 g3 cups774 g4 cups1,032 g

For reference, 1.5 cups of peanut butter (387g) is close in weight to an American football (410g).

Other Amounts of Peanut Butter

Cups US Grams Metric Cup Imperial Cup
0.25 cups 64.50 g 68.16 g 77.46 g
0.33 cups 85.14 g 89.97 g 102.25 g
0.5 cups 129.00 g 136.31 g 154.92 g
0.75 cups 193.50 g 204.47 g 232.38 g
1 cup 258.00 g 272.63 g 309.85 g
1.5 cups 387.00 g 408.94 g 464.77 g
2 cups 516.00 g 545.25 g 619.69 g
3 cups 774.00 g 817.88 g 929.54 g
4 cups 1,032.00 g 1,090.50 g 1,239.38 g
5 cups 1,290.00 g 1,363.13 g 1,549.23 g

Understanding the Units

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.

What is a Gram?

Grams are the preferred unit in professional kitchens and bakeries because they allow exact recipe scaling. To double a recipe, simply double the gram values. No need to worry about how tightly an ingredient is packed into a cup.

Frequently Asked Questions

About 387.00 g, 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). For 1.5 cups: 1.5 × 258 = 387.00 g.
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: 387.00 g ÷ 258 = 1.5 cups. Or use the Grams to Cups converter.