Girls Head circumference-for-age 0-36 months (5th through 95th percentiles)
5th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 32.2509 |
| 0.5 | 33.68744 |
| 1.5 | 35.7756 |
| 2.5 | 37.26522 |
| 3.5 | 38.40561 |
| 4.5 | 39.31814 |
| 5.5 | 40.07086 |
| 6.5 | 40.70567 |
| 7.5 | 41.25016 |
| 8.5 | 41.7234 |
| 9.5 | 42.13913 |
| 10.5 | 42.50755 |
| 11.5 | 42.83643 |
| 12.5 | 43.13182 |
| 13.5 | 43.39853 |
| 14.5 | 43.64042 |
| 15.5 | 43.86066 |
| 16.5 | 44.06186 |
| 17.5 | 44.2462 |
| 18.5 | 44.41553 |
| 19.5 | 44.57142 |
| 20.5 | 44.71521 |
| 21.5 | 44.84806 |
| 22.5 | 44.97099 |
| 23.5 | 45.08487 |
| 24.5 | 45.19047 |
| 25.5 | 45.2885 |
| 26.5 | 45.37954 |
| 27.5 | 45.46415 |
| 28.5 | 45.5428 |
| 29.5 | 45.61594 |
| 30.5 | 45.68394 |
| 31.5 | 45.74718 |
| 32.5 | 45.80596 |
| 33.5 | 45.86058 |
| 34.5 | 45.9113 |
| 35.5 | 45.95837 |
| 36 | 45.98061 |
10th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 32.75949 |
| 0.5 | 34.17346 |
| 1.5 | 36.23326 |
| 2.5 | 37.70685 |
| 3.5 | 38.83814 |
| 4.5 | 39.74588 |
| 5.5 | 40.49672 |
| 6.5 | 41.13171 |
| 7.5 | 41.67787 |
| 8.5 | 42.15391 |
| 9.5 | 42.5733 |
| 10.5 | 42.94604 |
| 11.5 | 43.27977 |
| 12.5 | 43.58043 |
| 13.5 | 43.85274 |
| 14.5 | 44.1005 |
| 15.5 | 44.32682 |
| 16.5 | 44.53428 |
| 17.5 | 44.72501 |
| 18.5 | 44.90085 |
| 19.5 | 45.06333 |
| 20.5 | 45.21378 |
| 21.5 | 45.35334 |
| 22.5 | 45.48301 |
| 23.5 | 45.60367 |
| 24.5 | 45.71608 |
| 25.5 | 45.82092 |
| 26.5 | 45.91878 |
| 27.5 | 46.01021 |
| 28.5 | 46.09568 |
| 29.5 | 46.17562 |
| 30.5 | 46.25043 |
| 31.5 | 46.32044 |
| 32.5 | 46.38599 |
| 33.5 | 46.44736 |
| 34.5 | 46.50481 |
| 35.5 | 46.55859 |
| 36 | 46.58417 |
25th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 33.65187 |
| 0.5 | 35.02508 |
| 1.5 | 37.03282 |
| 2.5 | 38.47603 |
| 3.5 | 39.58905 |
| 4.5 | 40.48611 |
| 5.5 | 41.23136 |
| 6.5 | 41.86435 |
| 7.5 | 42.41113 |
| 8.5 | 42.88978 |
| 9.5 | 43.31329 |
| 10.5 | 43.69135 |
| 11.5 | 44.03133 |
| 12.5 | 44.33899 |
| 13.5 | 44.61891 |
| 14.5 | 44.87476 |
| 15.5 | 45.10959 |
| 16.5 | 45.32587 |
| 17.5 | 45.5257 |
| 18.5 | 45.71086 |
| 19.5 | 45.88284 |
| 20.5 | 46.04295 |
| 21.5 | 46.19229 |
| 22.5 | 46.33184 |
| 23.5 | 46.46246 |
| 24.5 | 46.58489 |
| 25.5 | 46.6998 |
| 26.5 | 46.80778 |
| 27.5 | 46.90935 |
| 28.5 | 47.00499 |
| 29.5 | 47.09511 |
| 30.5 | 47.18009 |
| 31.5 | 47.2603 |
| 32.5 | 47.33603 |
| 33.5 | 47.40757 |
| 34.5 | 47.47518 |
| 35.5 | 47.53911 |
| 36 | 47.56976 |
50th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 34.71156 |
| 0.5 | 36.03454 |
| 1.5 | 37.97672 |
| 2.5 | 39.38013 |
| 3.5 | 40.46774 |
| 4.5 | 41.34841 |
| 5.5 | 42.08335 |
| 6.5 | 42.71034 |
| 7.5 | 43.25429 |
| 8.5 | 43.7325 |
| 9.5 | 44.15743 |
| 10.5 | 44.53837 |
| 11.5 | 44.88241 |
| 12.5 | 45.19508 |
| 13.5 | 45.48078 |
| 14.5 | 45.74308 |
| 15.5 | 45.98487 |
| 16.5 | 46.20858 |
| 17.5 | 46.41622 |
| 18.5 | 46.6095 |
| 19.5 | 46.78989 |
| 20.5 | 46.95863 |
| 21.5 | 47.11681 |
| 22.5 | 47.26538 |
| 23.5 | 47.40516 |
| 24.5 | 47.53688 |
| 25.5 | 47.66118 |
| 26.5 | 47.77865 |
| 27.5 | 47.88979 |
| 28.5 | 47.99506 |
| 29.5 | 48.09488 |
| 30.5 | 48.18961 |
| 31.5 | 48.2796 |
| 32.5 | 48.36515 |
| 33.5 | 48.44654 |
| 34.5 | 48.52402 |
| 35.5 | 48.59783 |
| 36 | 48.63342 |
75th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 35.85124 |
| 0.5 | 37.11807 |
| 1.5 | 38.98533 |
| 2.5 | 40.34145 |
| 3.5 | 41.39732 |
| 4.5 | 42.25604 |
| 5.5 | 42.97566 |
| 6.5 | 43.59207 |
| 7.5 | 44.12897 |
| 8.5 | 44.60282 |
| 9.5 | 45.0255 |
| 10.5 | 45.40587 |
| 11.5 | 45.75072 |
| 12.5 | 46.06532 |
| 13.5 | 46.3539 |
| 14.5 | 46.61986 |
| 15.5 | 46.86599 |
| 16.5 | 47.0946 |
| 17.5 | 47.30765 |
| 18.5 | 47.50676 |
| 19.5 | 47.69335 |
| 20.5 | 47.86861 |
| 21.5 | 48.0336 |
| 22.5 | 48.18923 |
| 23.5 | 48.33629 |
| 24.5 | 48.47548 |
| 25.5 | 48.60743 |
| 26.5 | 48.7327 |
| 27.5 | 48.85178 |
| 28.5 | 48.9651 |
| 29.5 | 49.07308 |
| 30.5 | 49.17607 |
| 31.5 | 49.2744 |
| 32.5 | 49.36836 |
| 33.5 | 49.45823 |
| 34.5 | 49.54425 |
| 35.5 | 49.62665 |
| 36 | 49.66656 |
90th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 36.9535 |
| 0.5 | 38.16405 |
| 1.5 | 39.95459 |
| 2.5 | 41.26063 |
| 3.5 | 42.28153 |
| 4.5 | 43.11489 |
| 5.5 | 43.81575 |
| 6.5 | 44.41815 |
| 7.5 | 44.94461 |
| 8.5 | 45.41078 |
| 9.5 | 45.82799 |
| 10.5 | 46.20466 |
| 11.5 | 46.54726 |
| 12.5 | 46.86084 |
| 13.5 | 47.14942 |
| 14.5 | 47.41624 |
| 15.5 | 47.66399 |
| 16.5 | 47.89487 |
| 17.5 | 48.11074 |
| 18.5 | 48.31317 |
| 19.5 | 48.50351 |
| 20.5 | 48.6829 |
| 21.5 | 48.85236 |
| 22.5 | 49.01276 |
| 23.5 | 49.16486 |
| 24.5 | 49.30933 |
| 25.5 | 49.44677 |
| 26.5 | 49.57773 |
| 27.5 | 49.70266 |
| 28.5 | 49.822 |
| 29.5 | 49.93613 |
| 30.5 | 50.0454 |
| 31.5 | 50.15012 |
| 32.5 | 50.25058 |
| 33.5 | 50.34704 |
| 34.5 | 50.43974 |
| 35.5 | 50.52889 |
| 36 | 50.5722 |
95th Percentile
| Age (in months) | Head Circumference (in centimeters) |
|---|---|
| 0 | 37.65138 |
| 0.5 | 38.82535 |
| 1.5 | 40.56517 |
| 2.5 | 41.83732 |
| 3.5 | 42.83396 |
| 4.5 | 43.64924 |
| 5.5 | 44.3363 |
| 6.5 | 44.92803 |
| 7.5 | 45.44619 |
| 8.5 | 45.90591 |
| 9.5 | 46.31815 |
| 10.5 | 46.69106 |
| 11.5 | 47.0309 |
| 12.5 | 47.34255 |
| 13.5 | 47.62991 |
| 14.5 | 47.89613 |
| 15.5 | 48.1438 |
| 16.5 | 48.37505 |
| 17.5 | 48.5917 |
| 18.5 | 48.79526 |
| 19.5 | 48.98703 |
| 20.5 | 49.16814 |
| 21.5 | 49.33955 |
| 22.5 | 49.50211 |
| 23.5 | 49.65657 |
| 24.5 | 49.80358 |
| 25.5 | 49.94373 |
| 26.5 | 50.07751 |
| 27.5 | 50.20541 |
| 28.5 | 50.32783 |
| 29.5 | 50.44514 |
| 30.5 | 50.55769 |
| 31.5 | 50.66578 |
| 32.5 | 50.76968 |
| 33.5 | 50.86965 |
| 34.5 | 50.96593 |
| 35.5 | 51.05872 |
| 36 | 51.10387 |
Page last reviewed: August 23, 2001