Home • Tools

Pregnancy Weight Gain Calculator

Medically reviewed by Dr. Swati Chitnis, MS, DNB Expertise: Obstetrics & GynecologyExperience: 8 years

Dr. Swati Chitnis is a gynecologist and endoscopic surgeon with over 8 years of experience. She did her bachelor in medicine at BJ Medical College & Sassoon Hospital, Pune, India and MS at the prestigious King Edward Memorial Hospital, Mumbai. Dr.

Read full bio of Dr. Swati Chitnis

Written by Swati Patwal, M.Sc. (Food & Nutrition), MBA Expertise: Food, Nutrition and HealthExperience: 10 years

Swati Patwal is a clinical nutritionist, a Certified Diabetes Educator (CDE) and a toddler mom with more than a decade of experience in diverse fields of nutrition. She started her career as a CSR project coordinator for a healthy eating and active lifestyle project catering to school children.

Read full bio of Swati Patwal

Edited by Rebecca Malachi, BSc Expertise: Pregnancy, Health and WellnessExperience: 12 years

Rebecca is a pregnancy writer and editor with a passion for delivering research-based and engaging content in areas of fertility, pregnancy, birth, and post-pregnancy. She did her graduation in Biotechnology and Genetics from Loyola Academy, Osmania University and obtained a certification in ‘Nutrition and Lifestyle in Pregnancy’ from Ludwig Maximilian University of Munich (LMU).

Read full bio of Rebecca Malachi

Last Updated on Mar 26, 2025

✔ Research-backed

MomJunction believes in providing reliable, research-backed information to you. As per our strong editorial policy requirements, we base our health articles on references (citations) taken from authority sites, international journals, and research studies. However, if you find any incongruencies, feel free to write to us.

Image: Shutterstock

How much weight should I gain or lose during pregnancy? This might be on your mind when your OB/GYN tells you to put on or lose some weight. You need to maintain the ideal recommended weight gain during pregnancy to avoid any pregnancy weight related complications.

MomJunction’s pregnancy weight gain calculator helps you in tracking your weight gain for each week of your pregnancy.

In This Article

Pregnancy Weight Gain Calculator

US Units
Metric Units

Pre-pregnancy Weight:

Current Pregnancy Week:

Your Height:

Pregnant with Twins:

No Yes

Current weight:

Pre-pregnancy Weight:

Current Pregnancy Week:

Your Height:

Pregnant with Twins:

No Yes

Current weight:

Result

Points To Be Noted

Check whether if you have a healthy weight gain using this graph-

The red dot represents your weight gain and the green area represents the ideal range of weight at your pregnancy week . You are :

Overweight - If your red dot is above the green area.
Underweight - If your red dot is below the green area.
Normal Weight - If your red dot is within the green area.

Embed This Tool

To embed this on to your site just copy and paste the below code.

<iframe id="mj-pregnancy_weight_gain_cal" width="500" height="720" allowtransparency=true loading="lazy" src="https://www.momjunction.com/pregnancy-weight-gain-calculator/?embed_id=1" frameborder=0 allowfullscreen></iframe>

If you are underweight or unable to gain the desired weight, it could affect the baby’s health and result in preterm labor. And, if you are overweight or obese, or gain weight excessively, it will affect both you and the baby causing complications in labor, C-section or a miscarriage.

You need to track your pregnancy weight and check the progress using pregnancy weight gain tracker based on height and weight before pregnancy to find out if you are under safe ranges of weight gain or not.

How Much Weight You Can Gain During Pregnancy ?

Appropriate weight gain during the weeks or trimesters of pregnancy depends on certain factors such as pre-pregnancy weight and BMI, whether you are carrying twins or multiples and more. Here is the general weight gain chart during pregnancy for recommended weight gain.

BMI Chart For Singleton Pregnancy Weight Gain

Pre-pregnancy BMI	Category	Recommended Weight Gain
< 18.5	Underweight	28-40lb (13-18kg)
18.5 – 24.9	Normal	24-35lb (11-16kg)
25-29.9	Overweight	15-25lb (7-11kg)
> 30	Obese	11-20lb (5-9kg)

BMI Chart For Twin Pregnancy Weight Gain

If you are carrying twins, you need to gain weight accordingly. Here is the general pregnancy weight gain chart for twins.

Pre-pregnancy BMI	Category	Recommended Weight Gain
18.5-24.9	Normal	28-40lb (13-18kg)
18.5 – 24.9	Normal	37-54lb (17-25kg)
25-29.9	Overweight	31-50lb (14-23kg)
> 30	Obese	25-42lb (11-19kg)

If you are carrying multiples or more, there are no set guidelines for pregnancy weight gain due to insufficient data. You should talk to your OB/GYN on how to gain the right weight.

When Do You Start Gaining Weight During Pregnancy ?

You will start to gain weight during the first trimester (due to retained water), but that is minimal. In the first month of pregnancy, there is little or no weight gain as the baby is just a tiny ball of cells. In fact, you might lose weight due to morning sickness in the initial months. Most women put on about 1.6kg in the first trimester.

During the second trimester, you will have the highest weight gain since your eating habits influence the baby’s weight. You will put around 0.5kg every week, totaling 5.5 to 6.4kg in that trimester. There will again be a considerable increase in weight during the third trimester, and it may slow down in the last month (due to food aversions or having an active baby). You will be gaining around 5kg in the last trimester. That is, normal weight gain during pregnancy should varies from 10 kg to 15 kg but again it depends on BMI ranges.

Frequently Asked Questions

What Is BMI Chart And Why It Is Important During Pregnancy? ‹11, 22, and 33 are known as Master numbers. They require unique attention and emphasis and have more potential than the other single digit numbers. They are difficult to handle, highly charged with energy, and take time to be incorporated into an individual’s personality. These three numbers form the Triangle of Enlightenment, where 11 represents vision, 22 vision with action and 33 offers guidance to the world.
Should I Lose Weight Before Getting Pregnant Again? ‹The life path 22 is the most potent and influential number. People with 22 as their life path number are the most significant innovators and thinkers in the world and use their ideas to change others’ lives. They do well in politics and business.
Is A Pregnancy Weight Gain Calculator Accurate In Predicting How Much Weight I Will Gain During Pregnancy? ‹
Good numbers are the ones which show a good impact on one’s life, although it depends on individual beliefs. They are proposed depending on a person’s name, first name, surname, date of birth, etc. Some of the good numbers in numerology include 1, 3, 7, 9, 15, 21, 25, 31, 33, 37, 43, 49, 51, 63, 67, 69, 73, 75, 79, 87, 93, 99…

Bad numbers are the ones which show a negative impact on one’s life. They also depend on a person’s belief or experience with that particular number. 13 and 4 are often regarded as bad numbers.
Can A Pregnancy Weight Gain Calculator Help Me Track My Baby's Growth? ‹Numerology has an impact on a baby’s soul and affects his/her chances of success in life. The fact is that your name is entwined with your destiny. The moment you name your baby using numerology, the name is going to become his/her lifelong companion. The right name can help your baby have an idea about the goals to pursue in life. A perfect name paves the way for a brighter future for the baby.
How Frequently Should I Use A Pregnancy Weight Gain Calculator To Track My Progress? ‹Astrology is the study of planets, their movements and their influence on human lives. The calculations are based on the positions of the sun, moon, and stars at the time of a person’s birth. Numerology is the study of numbers and their influence on human lives. The calculations are based on the date of birth and the name of a person. Both astrology and numerology can offer solutions and insights into your life, provided you believe in them.

Explore More Tools

See All

References

MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.

Freweini Gebrearegay Tela et al.; (2019); Effect of pregnancy weight gain on infant birth weight among mothers attending antenatal care from private clinics in Mekelle City, Northern Ethiopia: A facility based follow-up study.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212424#

Disclaimer:

Our pregnancy weight calculator provides just an estimation. You need to discuss your weight issues with a medical practitioner before taking any measures. MomJunction is not liable for any related issues, consequences or damages.