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 · defined whole-root length
Also 5.906 in
Defined whole-root length · defined specimen
Typical recorded range: 10 cm to 25 cm.
A little perspective
Sweet potato vs Human brain: length comparison
The whole-root length of a sweet potato is approximately equal to the front-to-back length of the human brain.
A sweet potato is the edible, starchy root of the plant Ipomoea batatas, widely grown for food.
The human brain is the organ that processes sensory information and coordinates thought, memory, movement and many body functions.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Sweet potato
Defined whole-root length: 15 cm; defined specimen; range 10 cm–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.
USDA FoodData Central — raw fruit portions
The marked defined whole-root length is calibrated. Unmeasured illustration details are representative.
Human brain
Representative front-to-back length: 15 cm; defined specimen; range 14 cm–17 cm.
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.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 15 cm
We compare the whole-root length of a sweet potato. This is an illustrative comparison value, not a claim that every example is the same. 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 measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 15 cm | 10 cm to 25 cm | defined specimen | |
| 250 g | 150 g to 450 g | defined specimen |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
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Nearest higher valueEveryday objectsBroccoli head16 cmDefined crown diameterA broccoli head is the compact, edible crown of the broccoli plant, consisting of clustered green flower buds.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- USDA FoodData Central — raw fruit portionsReference serving masses for raw fruits; dimensions remain explicit atlas specimen choices.
There’s always another scale
Follow your curiosity.
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