Nuts, Seeds & Butters
Convert millilitres of peanut butter to grams
One millilitre of peanut butter weighs about 1.09 g, and half a millilitre comes to roughly 0.545 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 ml of peanut butter =
1.09 g
- oz
- 0.038
- kg
- 0.0011
- lb
- 0.0024
Peanut Butter: 258 g per US cup · USDA FoodData Central. Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
Full peanut butter chart →Peanut Butter at a glance
Every number on this page comes from a single figure: 258 grams per US cup (USDA FoodData Central).
- 1 cup
- 258 g
- 1 tablespoon
- 16.1 g
- 1 teaspoon
- 5.38 g
- 1 cup in ounces
- 9.1 oz
- 100 g in cups
- 0.388 cups
- Density
- 1.09 g/ml
millilitres to grams chart for peanut butter
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Millilitres | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 15 ml | 16.4 g | 0.577 oz | 0.036 lb |
| 30 ml | 32.7 g | 1.15 oz | 0.072 lb |
| 50 ml | 54.5 g | 1.92 oz | 0.12 lb |
| 60 ml | 65.4 g | 2.31 oz | 0.144 lb |
| 100 ml | 109 g | 3.85 oz | 0.24 lb |
| 120 ml | 131 g | 4.62 oz | 0.288 lb |
| 150 ml | 164 g | 5.77 oz | 0.361 lb |
| 200 ml | 218 g | 7.69 oz | 0.481 lb |
| 240 ml | 262 g | 9.23 oz | 0.577 lb |
| 500 ml | 545 g | 19.2 oz | 1.2 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat peanut butter as 258 g per US customary cup, which works out to 1.091 g/ml. From there:
- Your millilitres figure is converted into millilitres or grams using standard unit sizes (ml = 1 ml).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 3/8 cups.
Measuring peanut butter accurately
Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many grams are in 1 millilitre of peanut butter?
1 millilitre of peanut butter is 1.09 g. This is based on a density of 258 g per US cup.
How many grams are in 2 millilitres of peanut butter?
2 millilitres of peanut butter is 2.18 g, and 0.545 g for half a millilitre.
How much is 100 g of peanut butter in cups?
100 g of peanut butter is about 3/8 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for peanut butter?
Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.