8g Peanut Butter to Cups
8 grams of peanut butter is a small amount, best measured with a spoon rather than a full cup. At 258g per cup, it works out to 0.5 tablespoons.
- Cups (US Customary)
- 0.03 (⅛)
- Tablespoons
- 0.5
- Teaspoons
- 1.5
- Milliliters
- 7 ml
8 grams of peanut butter = 0.03 cups (⅛ cup / 0.5 tbsp / 1.5 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 |
|---|---|---|---|---|
| 6g | 0.02 | ⅛ | 0.4 | 1.1 |
| 7g | 0.03 | ⅛ | 0.4 | 1.3 |
| 8g | 0.03 | ⅛ | 0.5 | 1.5 |
| 9g | 0.03 | ⅛ | 0.6 | 1.7 |
| 10g | 0.04 | ⅛ | 0.6 | 1.9 |
The Math for 8g of Peanut Butter
8g divided by 258g (the weight of one cup of peanut butter) equals 0.03 cups. Multiplying that by 16 gives 0.5 tablespoons, and by 48 gives 1.5 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 8g of peanut butter fills less volume (7ml) than the same weight of water would (8ml). For a side-by-side look at how other ingredients compare, see the 8 grams to cups page.
Metric and Imperial Cup Sizes
The 0.03 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 8g, that's ⅛ metric cups or ⅛ 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.
Making More or Less Than 8g
Doubling a recipe that calls for 8g of peanut butter means weighing 16g, or measuring 0.06 cups if you're working by volume instead of weight. Halving it means 4g, or 0.02 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.
How Peanut Butter Compares to Similar Ingredients
Within condiments & sauces, density still varies by ingredient. At 8g, almond butter (240g per cup) measures ⅛ cup, while tahini (240g per cup) measures ⅛ cup, compared to ⅛ cup for peanut butter. Swapping ingredients in a recipe by cup measurement alone, without adjusting for this difference, changes the actual weight used.
Typical Uses for Peanut Butter
- 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.
Getting an Accurate Spoon Measurement
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 8 grams of peanut butter in cups?+
8 grams of peanut butter is 0.03 cups, or 0.5 tablespoons.
Should I use a spoon or a cup for 8g of peanut butter?+
At 8g, a tablespoon or teaspoon measurement is usually more practical than a fractional cup. Use 0.5 tablespoons or 1.5 teaspoons.
Is 8 grams of peanut butter the same as 8 milliliters?+
Only if it weighed the same as water. 8g of water is about 8ml, while 8g of peanut butter is 7ml, because the two have different densities.
Does the answer change for a metric or imperial cup?+
Slightly. 8g of peanut butter is ⅛ metric cups or ⅛ imperial cups, close to the US figure but not identical, since each standard defines the cup at a different volume.