Pediatric Cardioversion Energy by Weight

Cardioversion 1st/2nd · Resuscitation

Formula: 1–2–4 J/kg

Notes

• first Cardioversion: 1 Joule/kg
• second Cardioversion: 2 Joule/kg
• more Cardioversions: 4 Joule/kg

Cardioversion 1st/2nd: value for each weight

Weight	Age (estimate)	Value
2 kg	preterm	2 → 4 → 8 J 2, then 4, then 8 joules
3 kg	newborn	3 → 6 → 12 J 3, then 6, then 12 joules
4 kg	1 mo	4 → 8 → 16 J 4, then 8, then 16 joules
5 kg	2 mo	5 → 10 → 20 J 5, then 10, then 20 joules
6 kg	4 mo	6 → 12 → 24 J 6, then 12, then 24 joules
7 kg	6 mo	7 → 14 → 28 J 7, then 14, then 28 joules
8 kg	8 mo	8 → 16 → 32 J 8, then 16, then 32 joules
9 kg	10 mo	9 → 18 → 36 J 9, then 18, then 36 joules
10 kg	1 y	10 → 20 → 40 J 10, then 20, then 40 joules
11 kg	1 y 6 mo	11 → 22 → 44 J 11, then 22, then 44 joules
12 kg	2 y	12 → 24 → 48 J 12, then 24, then 48 joules
13 kg	2 y 4 mo	13 → 26 → 52 J 13, then 26, then 52 joules
14 kg	2 y 8 mo	14 → 28 → 56 J 14, then 28, then 56 joules
15 kg	3 y	15 → 30 → 60 J 15, then 30, then 60 joules
16 kg	3 y 6 mo	16 → 32 → 64 J 16, then 32, then 64 joules
17 kg	4 y	17 → 34 → 68 J 17, then 34, then 68 joules
18 kg	4 y 6 mo	18 → 36 → 72 J 18, then 36, then 72 joules
19 kg	5 y	19 → 38 → 76 J 19, then 38, then 76 joules
20 kg	5 y 6 mo	20 → 40 → 80 J 20, then 40, then 80 joules
21 kg	6 y	21 → 42 → 84 J 21, then 42, then 84 joules
22 kg	6 y 4 mo	22 → 44 → 88 J 22, then 44, then 88 joules
23 kg	6 y 8 mo	23 → 46 → 92 J 23, then 46, then 92 joules
24 kg	7 y	24 → 48 → 96 J 24, then 48, then 96 joules
25 kg	7 y 4 mo	25 → 50 → 100 J 25, then 50, then 100 joules
26 kg	7 y 8 mo	26 → 52 → 104 J 26, then 52, then 104 joules
27 kg	8 y	27 → 54 → 108 J 27, then 54, then 108 joules
28 kg	8 y 4 mo	28 → 56 → 112 J 28, then 56, then 112 joules
29 kg	8 y 8 mo	29 → 58 → 116 J 29, then 58, then 116 joules
30 kg	9 y	30 → 60 → 120 J 30, then 60, then 120 joules
31 kg	9 y 4 mo	31 → 62 → 124 J 31, then 62, then 124 joules
32 kg	9 y 8 mo	32 → 64 → 128 J 32, then 64, then 128 joules
33 kg	10 y	33 → 66 → 132 J 33, then 66, then 132 joules
34 kg	10 y 3 mo	34 → 68 → 136 J 34, then 68, then 136 joules
35 kg	10 y 6 mo	35 → 70 → 140 J 35, then 70, then 140 joules
36 kg	10 y 9 mo	36 → 72 → 144 J 36, then 72, then 144 joules
37 kg	11 y	37 → 74 → 148 J 37, then 74, then 148 joules
38 kg	11 y 4 mo	38 → 76 → 152 J 38, then 76, then 152 joules
39 kg	11 y 8 mo	39 → 78 → 156 J 39, then 78, then 156 joules
40 kg	12 y	40 → 80 → 160 J 40, then 80, then 160 joules

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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