Track your pregnancy weight gain

Use our Pregnancy Weight Gain Chart to monitor your weight throughout each trimester and understand what's healthy for you and your baby.

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In general, the recommended weight gain during pregnancy is based on your body mass index (BMI) before you were pregnant. BMI is a ratio of your body weight to your height. It isn’t a perfect measure—for example, if you’re particularly muscular, your BMI may indicate “overweight” or “obese” even if your body fat percentage is on the lower side—but it can help the average person measure their weight.

BMI Calculator

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Pregnancy Weight Gain Chart

See our pregnancy weight gain chart below to understand what a typical range of weight gain should look like for you.

  • Underweight

    28 to 40 lbs (about 12.5 to 18 kg)

    BMI < 18.5
  • Normal Weight

    25 to 35 lbs (about 11.5 to 16 kg)

    BMI 18.5 to 24.9
  • Overweight

    15 to 25 lbs (about 7 to 11.5 kg)

    BMI 25 to 29.9
  • Obese

    11 to 20 lbs (about 5 to 9 kg)

    BMI 30 +

What causes weight gain during pregnancy?

In addition to the baby, weight gain during pregnancy is comprised of a number of factors:

  1. Placenta
    1-2 lbs (0.5-1 kg)
  2. Amniotic Fluid
    2 lbs (1 kg)
  3. Breast Tissue
    1-2 lbs (0.5-1 kg)
  4. Blood Supply
    3-4 lbs (1-2 kg)
  5. Stored Fat
    for breastfeeding and delivery
    3-4 lbs (1-2 kg)
  6. Larger Uterus
    3 lbs (1.5 kg)
  7. Baby
    7-8 lbs (3.5-4 kg)
  8. Extra Body Fluids
    4 lbs (2 kg)
What causes weight gain during pregnancy?

What does weight gain during pregnancy indicate?

Along with the aforementioned factors that contribute to your weight gain during pregnancy, gaining weight can help ensure a healthy baby upon delivery.

If you gain less than the recommended amount of weight, it’s possible you will deliver a baby who is too small. Low birth weight babies may have trouble breast feeding, can be at increased risk of illness and may experience developmental delays.

If you gain more than the recommended amount of weight, it’s possible to deliver a baby who is too large, leading to delivery complications, C-section, pregnancy related high blood pressure and potentially obesity during childhood.

How to maintain a healthy weight during pregnancy

When you become pregnant, be sure to talk to your doctor about pregnancy health and nutrition. You may find that our recipes for pregnant women can give you some good ideas for delicious foods to eat that can nourish both you and your growing baby, and our guide for exercising during pregnancy can help you learn ways to stay active and exercise safely during pregnancy.

Be sure to track your pregnancy weight gain throughout your pregnancy and follow our pregnancy weight gain chart to stay on top of everything.

Disclaimer: This chart is not a substitute for professional medical advice. Please consult your obstetrician or healthcare provider for advice specific to your pregnancy journey.

Tools

  • Poop Tracker

  • Pregnancy Weight Gain Calculator

  • Baby Names Generator

  • Ovulation Tracker

  • Pregnancy Tracker

  • Due Date Calculator

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