Pregnancy Weight Gain Calculator

Pregnancy Weight Gain Calculator

Use Other Calculator: BMI Calculator.

What is Pregnancy Weight Gain Calculator?

A Pregnancy Weight Gain Calculator is a helpful tool that estimates how much weight a woman might gain during her pregnancy journey. It considers factors like pre-pregnancy weight, height, and sometimes other variables to provide an approximate range of healthy weight gain. It’s not a strict rulebook, but rather a guideline to ensure both mom and baby are on track for a healthy pregnancy. It’s always important to consult with healthcare professionals for personalized advice, as every pregnancy is unique. Think of it as a friendly navigator on the exciting road to motherhood!

How to calculate Pregnancy Weight by this online Pregnancy Weight Gain Calculator?

To calculate your weight during pregnancy week, follow these steps:

  1. Enter your Before Pregnancy Weight (kg) in the first box.
  2. Input your current pregnancy week in the second box (1 to 40 weeks).
  3. Click the calculate button.
  4. View the results section to see the Recommended Weight Range for the selected pregnancy week, Recommended Weight Gain, and Delivery Weight Range.
  5. Download the pregnancy weight gain for 1 to 40 weeks CSV Excel file from the download button.

How much can I gain weight during the pregnancy?

During pregnancy, it’s typical to gain around 11 to 12 kilograms over nine months. In the first trimester, weight gain may be minimal, often just one or two kilograms, as nausea and vomiting can affect appetite. However, as pregnancy progresses into the second and third trimesters, weight gain typically increases, with the majority occurring in the final trimester.

This gain includes the weight of the baby, placenta, amniotic fluid, and hormonal changes. Recommendations for weight gain during pregnancy vary based on pre-pregnancy BMI. For those with a normal BMI (between 18.5 to 25), a gain of 11 to 15 kilograms is advised, while underweight individuals may aim for 12 to 18 kilograms. Overweight individuals (BMI 25 to 30) are recommended to gain 7 to 11 kilograms, and those with a BMI over 30 should aim for 5 to 9 kilograms to support a healthy pregnancy.

How you can calculate your BMI?

BMI chart
BMI chart

You should follow this BMI chart. For instance, if your height is 5’5″, refer to the green boxes corresponding to this height. For example, in the row for 5’5″, the weight ranges from 52 to 65.9 kilograms. If your weight falls within this range, your BMI is considered normal. During pregnancy with a normal BMI, aim to gain 11 to 16 kilograms.

If your BMI falls within the yellow boxes, indicating overweight, which occurs if your weight ranges between 68 to 79.5 kilograms for a height of 5’5″, aim for a weight gain of 7 to 11 kilograms. Being obese, with a BMI of 30 or more, suggests a weight gain of 5 to 9 kilograms during pregnancy. For instance, if your height is 5 feet 5 inches, weighing 81.8 kilograms or above would classify you as obese, where a weight gain of 11 to 20 kilograms is recommended.

The chart categorizes green as healthy, yellow as overweight, orange as obese, and red as extremely obese. Another example: If you’re 5 feet 4 inches tall and weigh between 50 to 65.9 kilograms, your BMI is normal, and during pregnancy, aim to gain 11 to 16 kilograms. However, if your weight falls between 68 to 77 kilograms for the same height, indicating overweight, aim for a weight gain of 7 to 11 kilograms.

Benefits of using this pregnancy weight gain calculator

If you want to use our pregnancy weight gain calculator online, you can receive several benefits:

  • Quick and Convenient: Our online pregnancy weight gain calculator offers instant results, saving you time and hassle compared to manual calculations or visits to a healthcare provider.
  • Personalized Insights: Gain valuable insights into your pregnancy journey with personalized recommendations tailored to your specific needs and circumstances, helping you make informed decisions about nutrition and wellness.
  • Peace of Mind: By utilizing our reliable and accurate calculator, you can alleviate anxiety and uncertainty about your pregnancy weight gain, allowing you to focus on enjoying this special time in your life.

Accuracy of this pregnancy weight gain calculator

The accuracy of the results provided by our pregnancy weight gain calculator tool is high, with approximately 90% of women experiencing weight gain within the average range calculated. However, individual pregnancy weight gain may vary due to differences in body types among women. Nonetheless, our calculator strives to provide a 95% accurate estimation of pregnancy weight gain based on the input provided.

Frequently Asked Questions

When does weight gain occur during pregnancy?

Weight gain typically starts during the first trimester of pregnancy.

When does the greatest weight gain occur during pregnancy?

The greatest weight gain usually occurs in the second and third trimesters.

When does the first weight gain occur during pregnancy?

The first weight gain can often be noticed during the first trimester of pregnancy.

How much weight gain is normal during pregnancy?

On average, normal weight gain during pregnancy ranges from 25 to 35 pounds. Want to track yours? Use our Pregnancy Weight Gain Calculator!


Before using our pregnancy calculator, it’s important to note that the results provided are based on average weight gain during pregnancy for most women. However, there may be instances where the calculated weight gain does not align with your individual pregnancy. In such cases, you can opt for manual calculations or consult a doctor for personalized advice