Pregnancy Weight Gain Calculator
Gaining the right amount of weight during pregnancy is important for both your health and your baby's development. This calculator helps you understand how much weight gain is recommended based on your pre-pregnancy BMI, following WHO guidelines.
The recommended total weight gain for a singleton pregnancy ranges from approximately 11.5 kg to 16 kg for women with a normal BMI (18.5–24.9). Your healthcare provider will monitor your weight at each antenatal visit and can provide personalised advice.
Understanding Pregnancy Weight Gain
Weight gain during pregnancy is not just about the baby. It includes the placenta, amniotic fluid, increased blood volume, breast tissue, uterine growth, and essential fat stores that support breastfeeding after delivery.
Most mums gain very little weight in the first trimester (about 0.5–2 kg) and then gain more steadily during the second and third trimesters (approximately 0.4–0.5 kg per week).
Tips for Healthy Weight Gain
- Eat balanced meals with plenty of local vegetables, fruits, and protein sources
- Stay active with gentle exercise such as walking, unless your doctor advises otherwise
- Drink plenty of water throughout the day
- Avoid "eating for two" — you only need about 300 extra calories per day in the second and third trimesters
- Attend all your antenatal appointments so your weight can be monitored regularly