4 pounds baby weight in kilos

4 pounds = 1.81 kilos

Baby Weight Information

Low Birth Weight Range

A birth weight below 2.5 kg (5.5 lbs) is considered low. Please consult with your healthcare provider for proper guidance.

How to Convert Baby Weight

Conversion Formula:

Kilograms = Pounds ÷ 2.20462262185

4 ÷ 2.20462262185 = 1.81

Baby Weight Reference Table

Pounds Kilos
3.60 1.63
3.80 1.72
4.00 1.81
4.20 1.91
4.40 2.00

Expected Baby Weight Gain

  • First 2 weeks: Regain birth weight
  • 0-4 months: 150-210 grams (5.3-7.4 ounces) per week
  • 4-6 months: 105-147 grams (3.7-5.2 ounces) per week
  • 6-12 months: 70-91 grams (2.5-3.2 ounces) per week

Quick Calculator

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Related Baby Weight Conversions

2.5 pounds baby weight in kilos3 pounds baby weight in kilos3.4 pounds baby weight in kilos3.8 pounds baby weight in kilos

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