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Chia seeds — Cups to Grams

One US cup of chia seeds weighs about 170 grams. That makes it heavier than all-purpose flour, which is 120 grams per cup. Chia seeds are small and dense, packing tightly into the cup. Use the converter below to switch chia seeds between cups, grams, ounces, tablespoons and millilitres — or read the full chart underneath.

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Chia seeds conversion chart

Chia seeds — cups to grams chart
Cups	Grams	Ounces	Tablespoons	Millilitres
⅛ cup	21.25 g	0.75 oz	2	29.57 ml
¼ cup	42.5 g	1.5 oz	4	59.15 ml
⅓ cup	56.67 g	2 oz	5.33	78.86 ml
½ cup	85 g	3 oz	8	118.3 ml
⅔ cup	113.3 g	4 oz	10.67	157.7 ml
¾ cup	127.5 g	4.5 oz	12	177.4 ml
1 cup	170 g	6 oz	16	236.6 ml
1¼ cups	212.5 g	7.5 oz	20	295.7 ml
1½ cups	255 g	8.99 oz	24	354.9 ml
2 cups	340 g	11.99 oz	32	473.2 ml
3 cups	510 g	17.99 oz	48	709.8 ml

Grams to cups: chia seeds

Chia seeds — grams to cups chart
Grams	Cups	Ounces	Tablespoons
10 g	0.059	0.353 oz	0.941
25 g	0.147	0.882 oz	2.35
50 g	0.294	1.76 oz	4.71
75 g	0.441	2.65 oz	7.06
100 g	0.588	3.53 oz	9.41
125 g	0.735	4.41 oz	11.76
150 g	0.882	5.29 oz	14.12
200 g	1.18	7.05 oz	18.82
250 g	1.47	8.82 oz	23.53
300 g	1.76	10.58 oz	28.24
400 g	2.35	14.11 oz	37.65
500 g	2.94	17.64 oz	47.06

How to measure chia seeds

Chia seeds are small and dense, packing tightly into the cup.

Because a cup measures volume rather than weight, the most reliable way to measure chia seeds is with a digital kitchen scale. If you are working from cups, keep your technique consistent every time so your results are repeatable. For more, see our guide on baking by weight versus volume.

No scale yet? You don't need a fancy one; any digital kitchen scale that reads in 1-gram steps does everything on this site. Well-rated kitchen scales on Amazon →

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Substitutes for chia seeds

1 tbsp ground chia + 3 tbsp water = 1 large egg (vegan binder) (Bob's Red Mill)
Whisk and rest 10 minutes until gel-like. Works in muffins, quick breads, pancakes, and most cookies; not for recipes that depend on egg structure (meringue, sponge).
1:1 ground flaxseed for whole-seed applications (Vitamix)
Flax is earthier and nuttier; chia is milder. Both add omega-3s and crunch in granola, breads, and toppings.

See all chia seeds substitutes, ratios and sources →

Chia seeds conversions: FAQ

Why doesn't a cup of chia seeds weigh the same as a cup of water?

A cup measures volume, not weight. Chia seeds is less dense than water (170 g versus 237 g per cup), so the same volume has a different weight. Weighing in grams is the most accurate way to measure it.

Common chia seeds conversions

Quick-answer pages for the conversions people search for most.

100 g to cups

100 g chia seeds ≈ 0.588 cups

200 g to cups

200 g chia seeds ≈ 1.18 cups

250 g to cups

250 g chia seeds ≈ 1.47 cups

500 g to cups

500 g chia seeds ≈ 2.94 cups

¼ cup to grams

¼ cup chia seeds ≈ 42.5 g

½ cup to grams

½ cup chia seeds ≈ 85 g

1 cup to grams

1 cup chia seeds ≈ 170 g

2 cups to grams

2 cups chia seeds ≈ 340 g

Related converters

← All ingredient converters Cups to grams chart Recipe scaler

* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.