How many grams are in a cup of popcorn kernels?

A US cup of unpopped popcorn kernels weighs about 200 grams. Kernels pack more densely than lighter grains because they are small, hard, and roughly round, leaving fewer air gaps between pieces.

Does this apply to popped popcorn?

No, this is for dry, unpopped kernels only. Popped popcorn is mostly air, so a cup of popped popcorn weighs only a few grams, not a useful comparison to the raw kernels.

How many kernels are in 2 tablespoons?

2 tablespoons is 1/8 of a cup, which works out to about 25 grams of kernels, the typical amount for a single stovetop batch that yields around 8 to 10 cups of popped popcorn.

Is this the same for yellow, white, and mushroom popcorn?

The 200 g/cup figure is a good general-purpose average. Smaller kernel varieties like mushroom popcorn can pack slightly denser, but the difference is small enough to ignore for most recipes.

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 for the same fill level.

Popcorn Kernels Cups to Grams

Name: Popcorn Kernels Cups to Grams
Availability: InStock
Author: Nham Vu

Enter a number of cups of unpopped popcorn kernels to get the weight in grams.

Popcorn Kernel Converter

Amount in Cups (unpopped)

Quick Presets

Result

100 g

≈ 3.53 oz

Quick Reference Table

Cups (unpopped)	Grams	Ounces

Values use a standard dry-kernel density of 200 grams per US cup (236.6 ml) for unpopped popcorn kernels. Popped popcorn is not comparable by weight since popping adds mostly air.

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Summary

Enter a number of cups of unpopped popcorn kernels to get the weight in grams.

How it works

Enter the number of cups of unpopped kernels you want to convert.
The gram weight updates instantly based on a 200 g/cup density.
Or click a preset button for a common recipe amount instead of typing.
Use the reference table for a quick look at other cup amounts.

Use cases

Scale a stovetop popcorn recipe written in cups to a kitchen scale in grams.
Portion out kernels by weight for a popcorn cart or concession stand.
Convert a US recipe to metric for cooking outside the US.
Check how many batches a bag of kernels will make.
Measure a single-serving batch without a measuring cup on hand.

Frequently Asked Questions

Last updated: 2026-07-24 · Reviewed by Nham Vu