Nuts, Seeds & Butters
Convert cups of chia seeds to grams
One cup of chia seeds weighs about 170 g, and half a cup comes to roughly 85 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 cup of chia seeds =
170 g
- oz
- 6
- kg
- 0.17
- lb
- 0.375
Chia Seeds: 170 g per US cup · USDA FoodData Central. Measure dry. Chia absorbs up to 12 times its weight in liquid once hydrated.
Full chia seeds chart →Chia Seeds at a glance
Every number on this page comes from a single figure: 170 grams per US cup (USDA FoodData Central).
- 1 cup
- 170 g
- 1 tablespoon
- 10.6 g
- 1 teaspoon
- 3.54 g
- 1 cup in ounces
- 6 oz
- 100 g in cups
- 0.588 cups
- Density
- 0.72 g/ml
cups to grams chart for chia seeds
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Cups (US) | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 1/8 cup | 21.3 g | 0.75 oz | 0.047 lb |
| 1/4 cup | 42.5 g | 1.5 oz | 0.094 lb |
| 1/3 cup | 56.7 g | 2 oz | 0.125 lb |
| 1/2 cup | 85 g | 3 oz | 0.187 lb |
| 2/3 cup | 113 g | 4 oz | 0.25 lb |
| 3/4 cup | 128 g | 4.5 oz | 0.281 lb |
| 1 cup | 170 g | 6 oz | 0.375 lb |
| 1 1/2 cup | 255 g | 8.99 oz | 0.562 lb |
| 2 cup | 340 g | 12 oz | 0.75 lb |
| 3 cup | 510 g | 18 oz | 1.12 lb |
| 4 cup | 680 g | 24 oz | 1.5 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat chia seeds as 170 g per US customary cup, which works out to 0.719 g/ml. From there:
- Your cups figure is converted into millilitres or grams using standard unit sizes (cup = 237 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 5/8 cups.
Measuring chia seeds accurately
Measure dry. Chia absorbs up to 12 times its weight in liquid once hydrated.
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 cup of chia seeds?
1 cup of chia seeds is 170 g. This is based on a density of 170 g per US cup.
How many grams are in 2 cups of chia seeds?
2 cups of chia seeds is 340 g, and 85 g for half a cup.
How much is 100 g of chia seeds in cups?
100 g of chia seeds is about 5/8 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 chia seeds?
Measure dry. Chia absorbs up to 12 times its weight in liquid once hydrated.
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.