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Use this calculator to assess the gestational maturity of your newborn.  At the end of the examination the total score determines the gestational maturity in weeks.
 		  
SIGN NEUROMUSCULAR MATURITY SCORE SIGN SCORE
-1 0 1 2 3 4 5
Posture posture

 

posture

 

posture

 posture

 posture
Square Window square window

 square window

 square window

 square window

 square window

 square window
Arm Recoil

Popliteal Angle

Scarf Sign

Heel To Ear

 
TOTAL SCORE  WEEKS
-10 20
-5 22
0 24
5 26
10 28
15 30
20 32
25 34
30 36
35 38
40 40
45 42
50 44

TOTAL NEUROMUSCULAR  MATURITY SCORE

TOTAL PHYSICAL MATURITY SCORE
TOTAL SCORE 
WEEKS
SIGN PHYSICAL MATURITY SCORE SIGN SCORE
-1 0 1 2 3 4 5
Skin Sticky, friable, transparent

 gelatinous, red, translucent 

 smooth pink, visible veins

 superficial peeling &/or rash, few veins

 cracking, pale areas, rare veins

 parchment, deep cracking, no vessels

 leathery, cracked, wrinkled

Lanugo
 		 none

 sparse

 abundant

 thinning

 bald areas

 mostly bald
Plantar Surface  heel-toe
40-50mm: -1 <40mm: -2

 >50 mm
no crease

 faint red marks

 anterior
transverse crease only

 creases ant. 2/3

 creases over entire sole
Breast imperceptable

 barely perceptable

 flat areola
no bud

 stippled areola
1-2 mm bud

 raised areola
3-4 mm bud

 full areola
5-10 mm bud
Eye / Ear lids fused
loosely: -1
tightly: -2

 lids open
pinna flat
stays folded

 sl. curved pinna; soft; slow recoil

 well-curved pinna; soft but ready recoil

 formed & firm
instant recoil

 thick cartilage
ear stiff
Genitals (Male) scrotum flat, smooth

 scrotum empty,
faint rugae

 testes in upper canal,
rare rugae

 testes descending,
few rugae

 testes down,
good rugae

 testes pendulous,
deep rugae
Genitals (Female) clitoris
prominent & labia flat

 prominent
clitoris & small labia minora

 prominent
clitoris & enlarging minora

 majora & minora equally prominent

 majora large,
minora small

 majora cover clitoris & minora

See Also

The New Ballard Score

 

References :
Ballard JL, Khoury JC, Wedig K, et al: New Ballard Score, expanded to include extremely premature
infants.J Pediatrics 1991; 119:417-423.

 Donovan EF, et al. Inaccuracy of Ballard scores before 28 weeks' gestation. National Institute of Child Health and Human Development Neonatal Research Network. J Pediatr. 1999;135(2 Pt 1):147-52. PMID:10431107

All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither Perinatology.com nor any other party involved in the preparation or publication of this site shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.

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