Pregnancy Weight Chart by Week: Track Weight Gain by BMI

During pregnancy, weight gain is both normal and necessary. A healthy amount of weight gain is crucial for the baby’s development and helps mothers maintain their own well-being. Gaining too little or too much weight can lead to complications, so it’s essential to regularly monitor weight to ensure the health of both the mother and the baby.

1. Recommended Weight Gain Range

Based on a pregnant woman's pre-pregnancy Body Mass Index (BMI), here are the recommended weight gain ranges for different BMI categories:

• BMI <18.5 (Underweight): Gain about 12.5-18 kg (28-40 lbs)
• BMI 18.5-24.9 (Normal Weight): Gain about 11.5-16 kg (25-35 lbs)
• BMI 25-29.9 (Overweight): Gain about 7-11.5 kg (15-25 lbs)
• BMI ≥30 (Obese): Gain about 5-9 kg (11-20 lbs)

2. Weight Gain by Pregnancy Stage

Weight gain during pregnancy is not linear. It typically varies based on the baby's development in each stage:

• First trimester (0-12 weeks): Weight gain is relatively small, around 1-2 kg (2-4 lbs). Some women may even experience weight loss due to morning sickness.
• Second trimester (13-27 weeks): This is the period of fastest weight gain, with an average gain of about 0.5 kg (1 lb) per week, totaling 6-8 kg (13-18 lbs).
• Third trimester (28-40 weeks): Weight gain tends to slow down, with a total gain of 4-5 kg (9-11 lbs) during the last weeks.

（🔍Healthy Tips for Managing Weight Wisely）

3. Pregnancy Weight Gain Chart by Week (kg)

Normal Weight (BMI 18.5-24.9) Pregnancy Weight Gain Tracking Chart

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Underweight (BMI <18.5) Pregnancy Weight Gain Tracking Chart

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Overweight (BMI 25-29.9) Pregnancy Weight Gain Tracking Chart

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Obese (BMI ≥30) Pregnancy Weight Gain Tracking Chart

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4. Conclusion

Using a pregnancy weight gain chart, expectant mothers can monitor their weight changes and ensure they are gaining within a healthy range. If weight gain is too fast or too slow, it’s recommended to consult a healthcare provider. A balanced diet and regular physical activity can help manage weight effectively while promoting a healthy environment for both the mother and the baby.