Nuts, Seeds & Butters
Convert teaspoons of peanut butter to grams
One teaspoon of peanut butter weighs about 5.38 g, and half a teaspoon comes to roughly 2.69 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 tsp of peanut butter =
5.38 g
- oz
- 0.19
- kg
- 0.0054
- lb
- 0.012
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
teaspoons to grams chart for peanut butter
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Teaspoons (US) | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 1/4 tsp | 1.34 g | 0.047 oz | 0.0030 lb |
| 1/2 tsp | 2.69 g | 0.095 oz | 0.0059 lb |
| 3/4 tsp | 4.03 g | 0.142 oz | 0.0089 lb |
| 1 tsp | 5.38 g | 0.19 oz | 0.012 lb |
| 1 1/2 tsp | 8.06 g | 0.284 oz | 0.018 lb |
| 2 tsp | 10.8 g | 0.379 oz | 0.024 lb |
| 3 tsp | 16.1 g | 0.569 oz | 0.036 lb |
| 4 tsp | 21.5 g | 0.758 oz | 0.047 lb |
| 6 tsp | 32.3 g | 1.14 oz | 0.071 lb |
| 8 tsp | 43 g | 1.52 oz | 0.095 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 teaspoons figure is converted into millilitres or grams using standard unit sizes (tsp = 4.93 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 teaspoon of peanut butter?
1 teaspoon of peanut butter is 5.38 g. This is based on a density of 258 g per US cup.
How many grams are in 2 teaspoons of peanut butter?
2 teaspoons of peanut butter is 10.8 g, and 2.69 g for half a teaspoon.
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.