Estimated weight based on age

In For health professionals

Estimated weights provided by the Children’s Resuscitation Emergency Drug Dosage (CREDD) book published by Children’s Health Queensland Hospital and Health Service in August 2019. View the CREDD user guide [PDF 290.7 KB] for copyright licensing details.

Age	Estimated weight
Birth (term)	3.5 kg
1 month	4 kg
2 months	5 kg
3 months	6 kg
4 months	7 kg
6 months	8 kg
9 months	9 kg
1 year	10 kg
2 years	12 kg
3 years	14 kg
4 years	16 kg
5 years	18 kg
6 years	20 kg
7 years	22 kg
8 years	25 kg
9 years	28 kg
10 years	30 kg
11 years	35 kg
12 years	40 kg
13 years	45 kg
14 years	50 kg

Last updated: September 2024