Pediatric Face Mask Size by Weight

Face Mask · Equipment

Notes

Newborns: round masks
Babies: round masks
Infants: masks with air cushion in the edge
Children: masks with air cushion in the edge

Face Mask: value for each weight
Weight	Age (estimate)	Value
2 kg	preterm	Size 0, round
3 kg	newborn	Size 1, round
4 kg	1 mo	Size 1, round
5 kg	2 mo	Size 1, round
6 kg	4 mo	Size 1
7 kg	6 mo	Size 1
8 kg	8 mo	Size 1
9 kg	10 mo	Size 1
10 kg	1 y	Size 2
11 kg	1 y 6 mo	Size 2
12 kg	2 y	Size 2
13 kg	2 y 4 mo	Size 2
14 kg	2 y 8 mo	Size 2
15 kg	3 y	Size 2
16 kg	3 y 6 mo	Size 2
17 kg	4 y	Size 2
18 kg	4 y 6 mo	Size 2
19 kg	5 y	Size 2 to 3
20 kg	5 y 6 mo	Size 2 to 3
21 kg	6 y	Size 2 to 3
22 kg	6 y 4 mo	Size 2 to 3
23 kg	6 y 8 mo	Size 2 to 3
24 kg	7 y	Size 3
25 kg	7 y 4 mo	Size 3
26 kg	7 y 8 mo	Size 3
27 kg	8 y	Size 3
28 kg	8 y 4 mo	Size 3
29 kg	8 y 8 mo	Size 3
30 kg	9 y	Size 3 to 4
31 kg	9 y 4 mo	Size 3 to 4
32 kg	9 y 8 mo	Size 3 to 4
33 kg	10 y	Size 3 to 4
34 kg	10 y 3 mo	Size 3 to 4
35 kg	10 y 6 mo	Size 3 to 4
36 kg	10 y 9 mo	Size 3 to 4
37 kg	11 y	Size 3 to 4
38 kg	11 y 4 mo	Size 3 to 4
39 kg	11 y 8 mo	Size 3 to 4
40 kg	12 y	Size 3 to 4

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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