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Pregnancy Weight Calculator

How much weight you should gain during pregnancy depends on your pre-pregnancy body mass index (BMI) and how many babies you are carrying. Use this calculator to find out which BMI category you are in and calculate your target weight range for your pregnancy.
Enter your pre-pregnancy weight and height:
(This is used to calculate your pre-pregnancy Body Mass Index)

Weight: pounds
Height: feet    inches

Community Comments (72)

Comment from Mrs.Contaldo » Posted Nov. 25, 2013 2:03pm
I started out at 125lbs pre-pregnancy. Over the first trimester I lost 5lbs just to gain it back early in my second. But unfortunately I've started losing weight again. I dismissed the weight loss in the beginning because I was always sick, but now I'm worried because I eat More than I probably should but yet can't gain.

Comment from littlesteph » Posted Nov. 18, 2013 5:03pm
i'm 5ft, my pregnancy weight was 112lb then I lost some weight, i'm 25 weeks and have gained 8lbs so far.

Comment from releasethezombabiies » Posted Oct. 15, 2013 12:47am
I'm at 12 weeks, I started at 120 and LOST 5 pounds this week. I eat fine. So, I dunno what's going on or if it's normal.

Comment from turtlegirl » Posted Aug. 14, 2013 11:06am
I started at 130lbs, 5'4. I am now up to 141lbs at 19 weeks, and I've been 141 since 16 weeks. As long as you are eating healthfully and indulging in small cravings, you will be fine.

Comment from misschic93 » Posted Aug. 7, 2013 5:27pm
I'm underweight so mine says I need to gain a few pounds the first trimester which I have already gained 3. Says I need to gain 28-40 pounds during my pregnancy. Wowzers.


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