Pregnancy Weight Gain Calculator – Healthy Weight During Pregnancy
Calculate recommended total weight gain during pregnancy based on pre-pregnancy BMI.
❤️ Health📐
Pre-pregnancy weight (lbs)
Height (inches)
Current pregnancy week
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Pregnancy Weight Gain Calculator – Healthy Weight During Pregnancy | result |
Step-by-Step Examples
Example 1
140lb, 5ft5, week 20
- BMI: 23.3 (normal) | Recommend: 25-35 lbs total
- By week 20: ~10-12 lbs expected
✓ 25-35 lbs total
Example 2
200lb, 5ft6, week 28
- BMI: 32.3 (obese) | Recommend: 11-20 lbs total
✓ 11-20 lbs total
Example 3
115lb, 5ft4, week 32
- BMI: 19.7 (normal) | Recommend: 25-35 lbs
✓ 25-35 lbs total
Real-World Applications
Pregnant Women
Track healthy weight gain by trimester.
OB/GYN Offices
Advise patients on weight gain goals.
Midwives
Monitor pregnancy weight milestones.
Registered Dietitians
Provide nutrition guidance in pregnancy.
Common Mistakes to Avoid
⚠️
Gaining too little
Inadequate weight gain raises risk of preterm birth and low birth weight. Eating for the baby matters.
⚠️
Gaining too much
Excess weight gain increases risk of gestational diabetes, C-section, and difficulty losing postpartum weight.
Frequently Asked Questions
Weight gain by trimester? ▾
First trimester: 1-5 lbs. Second trimester: ~1 lb/week. Third trimester: ~1 lb/week.
What accounts for pregnancy weight? ▾
Baby (~7-8 lbs), placenta, amniotic fluid, uterine/breast tissue, blood volume, body fluid, fat stores.
Losing weight during pregnancy? ▾
Not generally recommended unless severe obesity (BMI 40+). Consult your OB. Fetal nutrition is the priority.