Peanut Butter Conversion Charts + Calculator

Convert peanut butter between grams, cups, ounces, pounds, kilograms, tablespoons, teaspoons and milliliters with the calculator and detailed conversion charts below. The default chart values use standard peanut butter measured by volume in a US culinary cup.

Peanut butter conversion standard: This page uses 1 US cup = 270 grams = approximately 9.52 ounces, based on a published value of 135 grams per 1/2 cup. Peanut butter weights can vary slightly by brand, texture and oil separation, so use a package or recipe weight when one is provided.

Popular peanut butter conversions

32 grams0.1185 cups
50 grams0.1852 cups
100 grams0.3704 cups
135 grams0.5 cups
270 grams1 cup

Peanut Butter Conversion Calculator

Convert peanut butter by weight or volume using the standard basis or your own label value.

Default: 270 g per US cup of peanut butter.
Cup choice affects cup results only; tablespoons and teaspoons use US culinary equivalents.
Tip: Natural, crunchy, whipped or reduced-fat peanut butter may not fill a cup at exactly the same weight. Adjust the grams-per-cup field when your recipe or package provides a more specific measurement.
Current basis: Peanut butter — 1 US cup = 270 g. Cups are based on a 240 mL culinary US cup; US tablespoons and teaspoons use 16 tbsp or 48 tsp per cup.

Peanut Butter Grams to Cups, Ounces and Tablespoons Chart

Use this chart for common peanut butter amounts. Change the grams-per-US-cup basis or cup standard to update every conversion table on this page.

Peanut butter: grams to US cups
Grams Ounces US Cups Nearest 1/16 Cup US Tablespoons
5 g0.176 oz0.0185 cups< 1/16 cup0.296 tbsp
10 g0.353 oz0.037 cups1/16 cup0.593 tbsp
15 g0.529 oz0.0556 cups1/16 cup0.889 tbsp
20 g0.705 oz0.0741 cups1/16 cup1.185 tbsp
25 g0.882 oz0.0926 cups1/16 cup1.481 tbsp
30 g1.058 oz0.1111 cups1/8 cup1.778 tbsp
32 g1.129 oz0.1185 cups1/8 cup1.896 tbsp
40 g1.411 oz0.1481 cups1/8 cup2.37 tbsp
50 g1.764 oz0.1852 cups3/16 cup2.963 tbsp
60 g2.116 oz0.2222 cups1/4 cup3.556 tbsp
75 g2.646 oz0.2778 cups1/4 cup4.444 tbsp
80 g2.822 oz0.2963 cups5/16 cup4.741 tbsp
100 g3.527 oz0.3704 cups3/8 cup5.926 tbsp
125 g4.409 oz0.463 cups7/16 cup7.407 tbsp
135 g4.762 oz0.5 cups1/2 cup8 tbsp
150 g5.291 oz0.5556 cups9/16 cup8.889 tbsp
200 g7.055 oz0.7407 cups3/4 cup11.852 tbsp
225 g7.937 oz0.8333 cups13/16 cup13.333 tbsp
250 g8.818 oz0.9259 cups15/16 cup14.815 tbsp
270 g9.524 oz1 cups1 cup16 tbsp
300 g10.582 oz1.1111 cups1 1/8 cups17.778 tbsp
350 g12.346 oz1.2963 cups1 5/16 cups20.741 tbsp
400 g14.11 oz1.4815 cups1 1/2 cups23.704 tbsp
450 g15.873 oz1.6667 cups1 11/16 cups26.667 tbsp
500 g17.637 oz1.8519 cups1 7/8 cups29.63 tbsp
750 g26.455 oz2.7778 cups2 3/4 cups44.444 tbsp
1,000 g35.274 oz3.7037 cups3 11/16 cups59.259 tbsp

Peanut Butter Cups to Grams and Ounces Chart

Volume-to-weight conversions depend on peanut butter texture and brand. This table begins with the default standard of 270 grams per US cup.

Peanut butter: US cups and spoons to weight
Volume Grams Ounces US Spoon Equivalent
1 teaspoon5.62 g0.198 oz1 tsp
1 tablespoon16.88 g0.595 oz1 tbsp
2 tablespoons33.75 g1.19 oz2 tbsp
1/4 cup67.5 g2.381 oz4 tbsp
1/3 cup90 g3.175 oz5 tbsp + 1 tsp
1/2 cup135 g4.762 oz8 tbsp
2/3 cup180 g6.349 oz10 tbsp + 2 tsp
3/4 cup202.5 g7.143 oz12 tbsp
1 cup270 g9.524 oz16 tbsp
1 1/4 cups337.5 g11.905 oz20 tbsp
1 1/2 cups405 g14.286 oz24 tbsp
2 cups540 g19.048 oz32 tbsp
3 cups810 g28.572 oz48 tbsp
4 cups1,080 g38.096 oz64 tbsp

Peanut Butter Ounces to Grams and Cups Chart

These are weight ounces, not fluid ounces. Ounces and grams measure the mass of peanut butter, while cups and spoons estimate its volume.

Peanut butter: ounces to US cups
Ounces Grams US Cups US Tablespoons
0.25 oz7.09 g0.0262 cups0.42 tbsp
0.5 oz14.17 g0.0525 cups0.84 tbsp
1 oz28.35 g0.105 cups1.68 tbsp
2 oz56.7 g0.21 cups3.36 tbsp
3 oz85.05 g0.315 cups5.04 tbsp
4 oz113.4 g0.42 cups6.72 tbsp
5 oz141.75 g0.525 cups8.4 tbsp
6 oz170.1 g0.63 cups10.08 tbsp
8 oz226.8 g0.84 cups13.44 tbsp
12 oz340.19 g1.26 cups20.16 tbsp
16 oz453.59 g1.68 cups26.88 tbsp
32 oz907.18 g3.3599 cups53.759 tbsp

Common Peanut Butter Amounts

The following reference values use the default standard of 270 grams per US cup. Spoon amounts are helpful for sauces, smoothies and snacks, while half-cup and full-cup amounts are common in baking recipes.

Quick peanut butter measurement reference
Measure Approximate Grams Approximate Ounces Typical Use
1 teaspoon5.63 g0.198 ozSmall topping or sauce adjustment
1 tablespoon16.88 g0.595 ozSnack portion or smoothie addition
2 tablespoons33.75 g1.19 ozCommon measured serving volume
1/4 cup67.5 g2.381 ozSmall batch sauces or fillings
1/2 cup135 g4.762 ozCookies, frosting or bars
1 cup270 g9.524 ozFull recipe batches
Important: The same volume of crunchy, natural, whipped or reduced-fat peanut butter may weigh differently than the default basis. For precise recipe work, follow the weight listed in the recipe or on the product label.

How to Convert Peanut Butter Measurements

Convert grams to cups

Cups = Grams ÷ Grams per Cup
Example: 135 g peanut butter ÷ 270 = 0.5 US cup.

Convert cups to grams

Grams = Cups × Grams per Cup
Example: 1.5 US cups peanut butter × 270 = 405 grams.

For dry weight conversions, 1 ounce = approximately 28.35 grams and 1 pound = approximately 453.59 grams. For the US culinary volume used in this chart, 1 cup equals 16 tablespoons or 48 teaspoons.

US Cups, Metric Cups and Imperial Cups

Recipes may use different cup sizes depending on country or source. Since peanut butter is measured by volume in cups, the gram amount increases when a larger cup standard is selected.

Peanut butter cup-size comparison
Cup Standard Cup Volume Used Approx. Peanut Butter Weight When It May Appear
US culinary cup240 mL270 gAmerican recipes
Metric cup250 mL281.25 gMetric-cup recipes
Imperial cup284 mL319.5 gSome older UK or Commonwealth references

Metric and imperial cup values are scaled from the stated 270 g per 240 mL US-cup basis. Real product weight may vary slightly with formulation, temperature and how evenly the peanut butter is packed.

How to Measure Peanut Butter Accurately

Peanut butter is thick, sticky and easy to leave behind on a measuring cup or spoon. A kitchen scale is typically cleaner and more consistent than trying to pack and scrape a volume measure.

Use a scale when the recipe provides grams. Place the mixing bowl on a digital scale, tare to zero and add peanut butter until the required gram amount is reached.
Stir natural peanut butter first. Oil separation can change the consistency and distribution of solids. Mix thoroughly before measuring.
Pack volume measures evenly. When using a cup or tablespoon, press peanut butter into the measure to remove air pockets, then level the top.
Scrape the full amount into the recipe. A flexible spatula helps transfer sticky peanut butter so the measured amount is not left in the cup.
Smooth and creamy

Standard Peanut Butter

The default 270 g-per-US-cup basis is a practical recipe conversion for ordinary peanut butter. Use it when a recipe names peanut butter without a more specific gram value.

Check the label

Natural or Specialty Styles

Natural, crunchy, powdered-reconstituted or whipped products can differ in density. Enter a custom grams-per-cup basis when a more suitable measurement is available.

Which Peanut Butter Conversion Should You Use?

For Recipes by Weight

  • Use grams directly whenever a recipe lists them.
  • Convert ounces or pounds to grams when the package is weight-based.
  • Weight measurement avoids sticky residue and volume-packing variation.

For Recipes by Volume

  • Use the default 270 g per US cup for standard peanut butter.
  • Choose metric or imperial cups when the recipe uses those standards.
  • Update the custom basis if a brand or recipe provides its own conversion.

Frequently Asked Peanut Butter Conversion Questions

How many cups is 100 grams of peanut butter?

Using this page’s standard of 270 grams per US cup, 100 grams of peanut butter is approximately 0.3704 US cups, or about 5.93 US tablespoons.

How many grams are in 1 cup of peanut butter?

This chart uses 270 grams per US cup of peanut butter, based on a reference value of 135 grams per 1/2 cup.

How many grams are in 1/2 cup of peanut butter?

Using the standard on this page, 1/2 US cup of peanut butter equals 135 grams.

Is 2 tablespoons of peanut butter exactly 32 grams?

Product nutrition labels often provide their own serving weights. Using this chart’s baking conversion basis, 2 US tablespoons equals approximately 33.75 grams. For nutritional tracking, follow the gram value on the specific product label.

Are peanut butter ounces the same as fluid ounces?

No. Ounces in this converter are weight ounces measured on a scale. Fluid ounces are volume measures and are not interchangeable with peanut butter weight.

Does crunchy peanut butter weigh the same as creamy peanut butter?

Not necessarily. Texture, peanut pieces, added oils and formulation can change how much peanut butter fits in a measured volume. Use the custom grams-per-cup field for a different basis.

Is weighing peanut butter better than using cups?

Yes, particularly when baking. Measuring in grams is less messy, avoids product left behind in the cup and gives a repeatable amount.

Conversion Methodology

This converter uses a published peanut butter ingredient weight reference of 1/2 US cup = 135 grams, equivalent to 1 US cup = 270 grams. Volume relationships use a practical culinary US cup of 240 mL, with 16 US tablespoons or 48 US teaspoons per cup. Metric and imperial cup results are calculated by scaling volume from the selected grams-per-US-cup basis.

Accuracy note: Peanut butter volume conversions are approximate because brands and styles can vary in ingredients, texture, oil separation and packing. When precision matters, weigh the ingredient in grams or use the conversion specified by the recipe or product.

Sources

  • King Arthur Baking Company. Ingredient Weight Chart. Accessed May 29, 2026.
  • National Institute of Standards and Technology. Metric Kitchen: Cooking Measurement Equivalencies. Accessed May 29, 2026.

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