Everyday objects

Sweet potato

A sweet potato is the edible, starchy root of the plant Ipomoea batatas, widely grown for food.

Also known as: sweetpotato, Ipomoea batatas root

How big is it?

15 cm long

Also 5.906 in

Defined whole-root length · defined specimen
Typical recorded range: 10 cm to 25 cm.

Scale illustration of Sweet potato, calibrated to its defined whole-root length measurement.
The marked defined whole-root length represents 15 cm.

A little perspective

About the same scale as Human brain.

Human brain: The human brain is the organ that processes sensory information and coordinates thought, memory, movement and many body functions.

True scale
01
Sweet potato15 cmDefined whole-root length
02
Human brain15 cmRepresentative front-to-back length
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
Measurements, assumptions & sources +

Sweet potato

A defined whole sweet-potato storage root 15 cm long and 250 g. Cultivar and growing conditions vary; the tapered root body is measured without fine roots, leaves or cut surfaces.

USDA FoodData Central — raw fruit portions

The marked defined whole-root length is calibrated. Unmeasured illustration details are representative.

Human brain

A defined adult-brain specimen 15 cm front to back and 1.4 kg. Brain size and mass vary by person; these values are comparison anchors, not health benchmarks.

Defined examples — our methodology

The marked representative front-to-back length is calibrated. Unmeasured illustration details are representative.

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Why this measurement?

Why we use 15 cm

For comparison, this page uses defined whole-root length. This is labelled defined specimen: an explicit comparison model rather than a claim that every example has the same value. The recorded range is 10 cm to 25 cm.

A defined whole sweet-potato storage root 15 cm long and 250 g. Cultivar and growing conditions vary; the tapered root body is measured without fine roots, leaves or cut surfaces.

The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →

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Recorded properties

Sweet potato dimensions and measurements

PropertySelected valueRecorded rangeBasis
15 cm10 cm to 25 cmdefined specimen
250 g150 g to 450 gdefined specimen

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These links use compatible length records, ordered around the selected value.

Sources and method

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The source records and measurement method remain available for inspection.

Read the measurement and artwork methodology →

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