100 Grams of Peanut Butter to Cups
100 grams of peanut butter is a typical single-recipe amount, equal to 0.39 cups at a density of 258g per cup.
- Cups (US Customary)
- 0.39 (⅜)
- Tablespoons
- 6.2
- Teaspoons
- 18.6
- Milliliters
- 92 ml
100 grams of peanut butter = 0.39 cups (⅜ cup / 6.2 tbsp / 18.6 tsp)
Peanut Butter has a density of approximately 258g per cup. Creamy, natural style runs closer to 240g. Source: USDA FoodData Central. This is the figure used everywhere on this page, including the tablespoon and teaspoon values, so the numbers stay consistent whether you're reading the summary line, the table, or the FAQ answers below.
| Grams | Cups | Fraction | Tablespoons | Teaspoons |
|---|---|---|---|---|
| 90g | 0.35 | ⅓ | 5.6 | 16.7 |
| 95g | 0.37 | ⅜ | 5.9 | 17.7 |
| 100g | 0.39 | ⅜ | 6.2 | 18.6 |
| 110g | 0.43 | ⅜ | 6.8 | 20.5 |
| 120g | 0.47 | ½ | 7.4 | 22.3 |
How the 100g Figure Is Calculated
100g divided by 258g (the weight of one cup of peanut butter) equals 0.39 cups. Multiplying that by 16 gives 6.2 tablespoons, and by 48 gives 18.6 teaspoons, since one cup always equals 16 tablespoons or 48 teaspoons regardless of the ingredient.
Peanut Butter is denser than water, which weighs about 236g per cup. That's why 100g of peanut butter fills less volume (92ml) than the same weight of water would (100ml). For a side-by-side look at how other ingredients compare, see the 100 grams to cups page.
If Your Recipe Uses Metric or Imperial Cups
The 0.39 cup figure above uses the US Customary cup (236.588ml). Recipes written outside the US sometimes use a metric cup (250ml) or an imperial (uk) cup (284.131ml) instead. At 100g, that's ⅜ metric cups or ⅓ imperial cups of peanut butter, close to the US figure but not identical. The cup standard switch in the converter above recalculates this instantly for any gram amount.
Scaling 100g Up or Down
Doubling a recipe that calls for 100g of peanut butter means weighing 200g, or measuring 0.78 cups if you're working by volume instead of weight. Halving it means 50g, or 0.19 cups. Weight scales exactly with simple multiplication; cup measurements compound any scooping error each time they're doubled or halved, so weighing is more reliable the more a recipe is scaled.
Peanut Butter vs. Other Condiments & Sauces
Within condiments & sauces, density still varies by ingredient. At 100g, almond butter (240g per cup) measures ⅜ cup, while tahini (240g per cup) measures ⅜ cup, compared to ⅜ cup for peanut butter. Swapping ingredients in a recipe by cup measurement alone, without adjusting for this difference, changes the actual weight used.
Where 100g of Peanut Butter Fits in a Recipe
- Peanut butter cookies typically use 130g to 260g per batch.
- Smoothies often call for 30g (about 2 tablespoons) per serving.
- No-bake energy bites usually need about 130g for a dozen.
How to Measure It Accurately
Condiments & Sauces
Use a spatula to level thick condiments like peanut butter or tahini after pressing them into the cup to remove air gaps.
For exact results
Stir thick condiments well before measuring, since separation during storage (common in natural nut butters) can make the top and bottom of the jar measure differently.
For every gram amount at once, the peanut butter conversion chart lists peanut butter across the full range from 1g to 1000g in one table.
Frequently Asked Questions
What is 100 grams of peanut butter in cups?+
100 grams of peanut butter is 0.39 cups (⅜ cup), or 6.2 tablespoons.
How do I measure 100 grams of peanut butter without a scale?+
Use ⅜ cup, spooned in and leveled off with a straight edge. If you only have tablespoons, use 6.2 tablespoons instead.
Why is peanut butter's gram-to-cup ratio different from other ingredients?+
Peanut Butter weighs 258g per cup because of its own density. Creamy, natural style runs closer to 240g.
Does a metric or imperial cup change this 100g conversion?+
Yes, slightly. 100g of peanut butter is ⅜ metric cups or ⅓ imperial cups, versus ⅜ US cups, since each cup standard holds a different volume.