Pregnancy weight gain, without the shame spiral.
Estimate your pre-pregnancy BMI category, total pregnancy gain range, and week-by-week context using public CDC-style guidance. It is a planning tool, not a judgment.
Your numbers
What the calculator shows
Pre-pregnancy BMI
22.5
Normal BMI
Total guide range
25-35 lb
18.5 to 24.9
Week-based context
9.8-15.5 lb
At week 24
Current gain
13 lb
This estimate sits inside the week-based range. Keep using your clinician's care plan as the source of truth.
What to check next in Doola
Weight gain often changes the everyday questions: protein snacks, nausea foods, supplements, drinks, and ingredient labels. Doola can help check the food or product in front of you without turning one question into a long search session.
Source basis
How the pregnancy weight gain calculator works
The calculator estimates BMI from height and pre-pregnancy weight, then maps that BMI to public pregnancy weight-gain ranges. Week-based context uses a simple first-trimester range plus later weekly gain guidance. It cannot account for personal medical context.
Underweight BMI
BMI Under 18.5
28-40 lb total
Normal BMI
BMI 18.5 to 24.9
25-35 lb total
Overweight BMI
BMI 25 to 29.9
15-25 lb total
Obesity BMI
BMI 30 or higher
11-20 lb total
Questions parents ask
How much weight should I gain during pregnancy?
CDC guidance uses pre-pregnancy BMI as the starting point. For one baby, the commonly cited total ranges are 28 to 40 lb for underweight BMI, 25 to 35 lb for normal BMI, 15 to 25 lb for overweight BMI, and 11 to 20 lb for BMI 30 or higher.
Does this calculator diagnose whether my weight gain is healthy?
No. This tool is educational. Weight gain can be affected by nausea, swelling, twins, diabetes care, appetite, medications, fluid shifts, and your clinician's plan. Use the result as a conversation starter, not a diagnosis.
Why does pre-pregnancy BMI matter?
CDC and ACOG explain pregnancy weight-gain ranges by pre-pregnancy BMI because the recommended total gain differs by BMI category. The calculator estimates BMI from height and pre-pregnancy weight, then shows the matching public-health range.
What if I am gaining faster or slower than the range?
Do not panic from one number. Check your inputs and ask your OB, midwife, or dietitian if the pattern is changing quickly, you have swelling, severe nausea, vomiting, appetite concerns, or a condition that affects nutrition or fluid balance.