Normal Hemoglobin in Children by Weight

Hemoglobin · Normal Values

Notes

• Hemoglobin levels in the newborn are high
• Deepest values with 3 months

Hemoglobin: value for each weight

Weight	Age (estimate)	Value
2 kg	preterm	160–200 g/L 160 to 200 grams per liter
3 kg	newborn	160–200 g/L 160 to 200 grams per liter
4 kg	1 mo	110–160 g/L 110 to 160 grams per liter
5 kg	2 mo	100–120 g/L 100 to 120 grams per liter
6 kg	4 mo	100–120 g/L 100 to 120 grams per liter
7 kg	6 mo	100–120 g/L 100 to 120 grams per liter
8 kg	8 mo	100–120 g/L 100 to 120 grams per liter
9 kg	10 mo	100–120 g/L 100 to 120 grams per liter
10 kg	1 y	100–120 g/L 100 to 120 grams per liter
11 kg	1 y 6 mo	100–120 g/L 100 to 120 grams per liter
12 kg	2 y	100–120 g/L 100 to 120 grams per liter
13 kg	2 y 4 mo	100–120 g/L 100 to 120 grams per liter
14 kg	2 y 8 mo	100–120 g/L 100 to 120 grams per liter
15 kg	3 y	100–120 g/L 100 to 120 grams per liter
16 kg	3 y 6 mo	100–120 g/L 100 to 120 grams per liter
17 kg	4 y	100–120 g/L 100 to 120 grams per liter
18 kg	4 y 6 mo	100–120 g/L 100 to 120 grams per liter
19 kg	5 y	110–130 g/L 110 to 130 grams per liter
20 kg	5 y 6 mo	110–130 g/L 110 to 130 grams per liter
21 kg	6 y	110–130 g/L 110 to 130 grams per liter
22 kg	6 y 4 mo	110–130 g/L 110 to 130 grams per liter
23 kg	6 y 8 mo	110–130 g/L 110 to 130 grams per liter
24 kg	7 y	110–130 g/L 110 to 130 grams per liter
25 kg	7 y 4 mo	110–130 g/L 110 to 130 grams per liter
26 kg	7 y 8 mo	110–130 g/L 110 to 130 grams per liter
27 kg	8 y	110–130 g/L 110 to 130 grams per liter
28 kg	8 y 4 mo	110–130 g/L 110 to 130 grams per liter
29 kg	8 y 8 mo	110–130 g/L 110 to 130 grams per liter
30 kg	9 y	110–130 g/L 110 to 130 grams per liter
31 kg	9 y 4 mo	110–130 g/L 110 to 130 grams per liter
32 kg	9 y 8 mo	110–130 g/L 110 to 130 grams per liter
33 kg	10 y	110–130 g/L 110 to 130 grams per liter
34 kg	10 y 3 mo	110–130 g/L 110 to 130 grams per liter
35 kg	10 y 6 mo	110–130 g/L 110 to 130 grams per liter
36 kg	10 y 9 mo	110–130 g/L 110 to 130 grams per liter
37 kg	11 y	110–130 g/L 110 to 130 grams per liter
38 kg	11 y 4 mo	110–130 g/L 110 to 130 grams per liter
39 kg	11 y 8 mo	110–130 g/L 110 to 130 grams per liter
40 kg	12 y	120–180 g/L 120 to 180 grams per liter

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

Last updated: 2026-11-05