How many grams are in a cup of chia seeds?

A cup of chia seeds weighs about 168 grams, which is roughly 5.9 ounces.

How many grams are in a tablespoon of chia seeds?

Since there are 16 tablespoons in a cup, one tablespoon of chia seeds weighs about 10.5 grams using the same 168 g/cup density.

Does the density change if the chia seeds are soaked?

Yes. This figure is for dry, unsoaked chia seeds. Once chia seeds absorb liquid they form a gel and swell several times in volume, so a soaked cup weighs much less than 168 g per cup of the original dry seeds.

Is this the same for black and white chia seeds?

Yes, black and white chia seeds have essentially the same density, so the same 168 g/cup figure applies to both.

Is this a US cup or a metric cup?

This tool uses the US cup (236.6 ml). A metric cup (250 ml) would give a slightly higher gram result.

Chia Seeds Cups to Grams

Name: Chia Seeds Cups to Grams
Availability: InStock
Author: Nham Vu

Enter a number of cups of chia seeds to get the weight in grams and ounces.

Chia Seeds Converter

Amount in Cups

Result

168 g

≈ 5.93 oz

Quick Reference Table

Cups	Grams	Ounces

Values are measured by US cup (236.6 ml) using a density of 168 grams per cup of dry chia seeds. Soaked or gelled chia seeds weigh far less per cup because they absorb liquid and swell in volume.

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Summary

Enter a number of cups of chia seeds to get the weight in grams and ounces.

How it works

Enter the number of cups of chia seeds you want to convert.
The gram weight updates instantly based on a fixed density of 168 g per cup.
The ounce equivalent is shown alongside the gram result.
Use the reference table for common cup amounts without typing a value.

Use cases

Scale a smoothie or pudding recipe written in cups to a kitchen scale in grams.
Convert a US recipe to metric for baking or cooking outside the US.
Check how much a serving of chia seeds weighs for a meal or macro plan.
Portion out chia seeds by weight for batch meal prep.
Match a bulk-bin cup scoop to the gram listing on a packaged product.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu