Food & Drink

How long is a corn kernel?

A corn kernel is about 1.2 cm (0.47 in) long.

What is measured: dried kernel, length

Corn kernel (1.2 cm) drawn to scale beside a grain of rice (7 mm) and a large coin (2.4 cm)
Drawn to scale, from left to right: Grain of rice (7 mm), Corn kernel (1.2 cm) and Large coin (2.4 cm).

Compare

How big is that, really?

  • About 1.7× as long as a grain of rice
  • About 2 would fit across a large coin
  • About 7 would fit end to end along a credit card
  • About 6× the width of a raindrop
  • About 24× the width of a grain of sand

Learn

Facts about Corn kernel

Each corn kernel is a botanical fruit called a caryopsis, in which the seed coat is fused to the fruit wall.

Source: Encyclopaedia Britannica — Corn; USDA FoodData Central — Corn grain, yellow, whole, dried

Food & Drink

NameSizeCompared with Corn kernel
Rice grain7 mm (0.28 in)0.58×
Pea8 mm (0.31 in)0.67×
Chickpea8 mm (0.31 in)0.67×
Coffee bean9 mm (0.35 in)0.75×
Corn kernel1.2 cm (0.47 in)this page
Blueberry1.5 cm (0.59 in)1.3×
Sunflower seed1.5 cm (0.59 in)1.3×
Grape2 cm (0.79 in)1.7×
Cherry2 cm (0.79 in)1.7×
Raspberry2 cm (0.79 in)1.7×

Test your sense of scale

Which is bigger: Corn kernel or Blueberry?

Topics

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