Pediatric Intraosseous Needle Size by Weight

Intraosseous Needle · Equipment

Notes

<40 kg: 15 mm (pink)
>40 kg: 25 mm (blue)
>40 kg and obese: 45 mm (yellow)

Intraosseous Needle: value for each weight
Weight	Age (estimate)	Value
2 kg	preterm	Not listed for this weight
3 kg	newborn	15 millimeters, pink
4 kg	1 mo	15 millimeters, pink
5 kg	2 mo	15 millimeters, pink
6 kg	4 mo	15 millimeters, pink
7 kg	6 mo	15 millimeters, pink
8 kg	8 mo	15 millimeters, pink
9 kg	10 mo	15 millimeters, pink
10 kg	1 y	15 millimeters, pink
11 kg	1 y 6 mo	15 millimeters, pink
12 kg	2 y	15 millimeters, pink
13 kg	2 y 4 mo	15 millimeters, pink
14 kg	2 y 8 mo	15 millimeters, pink
15 kg	3 y	15 millimeters, pink
16 kg	3 y 6 mo	15 millimeters, pink
17 kg	4 y	15 millimeters, pink
18 kg	4 y 6 mo	15 millimeters, pink
19 kg	5 y	15 millimeters, pink
20 kg	5 y 6 mo	15 millimeters, pink
21 kg	6 y	15 millimeters, pink
22 kg	6 y 4 mo	15 millimeters, pink
23 kg	6 y 8 mo	15 millimeters, pink
24 kg	7 y	15 millimeters, pink
25 kg	7 y 4 mo	15 millimeters, pink
26 kg	7 y 8 mo	15 millimeters, pink
27 kg	8 y	15 millimeters, pink
28 kg	8 y 4 mo	15 millimeters, pink
29 kg	8 y 8 mo	15 millimeters, pink
30 kg	9 y	15 millimeters, pink
31 kg	9 y 4 mo	15 millimeters, pink
32 kg	9 y 8 mo	15 millimeters, pink
33 kg	10 y	15 millimeters, pink
34 kg	10 y 3 mo	15 millimeters, pink
35 kg	10 y 6 mo	15 millimeters, pink
36 kg	10 y 9 mo	15 millimeters, pink
37 kg	11 y	15 millimeters, pink
38 kg	11 y 4 mo	15 millimeters, pink
39 kg	11 y 8 mo	15 millimeters, pink
40 kg	12 y	25 millimeters, blue

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Values imported unchanged on 2026-11-04. Independent verification against official sources is in progress (see Methodology).

Last updated: 2026-11-04