Newborn baby
A newborn baby is a human infant in the earliest period immediately after birth.
How big is it?
50 cm long
Also 1.64 ft
Length · example
A little perspective
About the same scale as Platypus.
Platypus: The platypus is a semi-aquatic mammal native to eastern Australia, notable for its duck-like bill and egg-laying reproduction.
Measurements, assumptions & sources +
Newborn baby
A 50 cm, 3.5 kg example. Not a health or growth benchmark.
Defined examples — our methodology
The marked length is calibrated. Unmeasured illustration details are representative.
Platypus
A representative adult platypus 50 cm from bill to tail and 1.5 kg. Sex and population affect size, and the broad tail is included in total length.
San Diego Zoo Wildlife Alliance — Platypus
The marked representative total length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 50 cm
For comparison, this page uses length. This is labelled example: an explicit comparison model rather than a claim that every example has the same value.
A 50 cm, 3.5 kg example. Not a health or growth benchmark.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Newborn baby dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 50 cm | Not recorded | example | |
| 3.5 kg | Not recorded | example |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · PeopleHuman femur45 cmThe human femur is the thigh bone, connecting the hip to the knee and supporting body weight during movement.
Around the same scale · Living thingsPlatypus50 cmThe platypus is a semi-aquatic mammal native to eastern Australia, notable for its duck-like bill and egg-laying reproduction.
Nearest higher value · PeopleHuman torso60 cmThe human torso is the central part of the body between the shoulders and hips, containing most major internal organs.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
There’s always another scale
Follow your curiosity.
Living thingsPlatypus50 cmThe platypus is a semi-aquatic mammal native to eastern Australia, notable for its duck-like bill and egg-laying reproduction.PeopleHuman femur45 cmThe human femur is the thigh bone, connecting the hip to the knee and supporting body weight during movement.
SpaceSputnik 158 cmSputnik 1 was the first artificial satellite launched into Earth orbit by the Soviet Union in 1957.
SportBoomerang40 cmA boomerang is a curved, flat tool traditionally used for sport or hunting, designed to return to the thrower when thrown correctly.
ContainersSamovar urn5 LA samovar urn is a traditional metal vessel used to heat and serve tea, especially in Russian and Central Asian cultures.
Everyday thingsA2 paper59.4 cmA2 paper is an ISO 216 paper format produced by halving an A1 sheet across its longer side.
Living thingsMeerkat50 cmA meerkat is a small, social mammal from southern Africa that lives in cooperative groups and forages for insects and other small animals.PeopleHuman torso60 cmThe human torso is the central part of the body between the shoulders and hips, containing most major internal organs.