Pregnancy Weight Gain Calculator
IOM Guidelines · Trimester Breakdown · Week Tracker · Nutrition Guide
Pre-Pregnancy Details
ft
in
lbs
weeks
lbs
Recommended Total Pregnancy Weight Gain
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Weight Status
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Current Gain vs Recommended Range —
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0 — — —
Pre-Preg BMI
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BMI Category
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Recommended Range
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Gained So Far
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Expected at Wk 20
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Still to Gain
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Current Week
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Weekly Rate
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Recommended Gain by Trimester
Where Does Pregnancy Weight Go? (at full term)
Week-by-Week Gain Schedule
WeekTrimesterExpected Gain (low)Expected Gain (high)Status
Weight Gain Scenarios
Projected total gain at term (current rate):—
Weight at recommended midpoint gain:—
Expected postpartum retained weight (6wks):—
Typical time to return to pre-pregnancy weight:—
Extra daily calories needed this trimester:—
Weight Gain Insights
Track your weekly weight gain against IOM recommended ranges. Uses your pre-pregnancy weight and BMI from Tab 1. Enter your weight at specific pregnancy weeks to see if you're on track.
Your Pregnancy Week Weights
Your Weight Gain vs Recommended Green = on track · Yellow = slightly off · Red = outside range
WeekYour WeightGain So FarRecommended (low)Recommended (high)Status
Trimester Nutrition Requirements
kcal
Daily Calorie Target
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Key Nutrients by Trimester
Daily Calories
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Extra vs Pre-Preg
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Protein (g/day)
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Iron (mg/day)
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Calcium (mg/day)
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Folate (mcg/day)
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Water (L/day)
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Vitamin D (IU/day)
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Key Foods to Prioritise This Trimester
Foods to Limit or Avoid During Pregnancy
Nutrition Insights
Weight gain recommendations based on Institute of Medicine (IOM) 2009 guidelines. Pre-pregnancy BMI categories: Underweight <18.5, Normal 18.5–24.9, Overweight 25–29.9, Obese ≥30. Trimester gain rates are approximate. Individual needs vary — always consult your OB-GYN or midwife for personalised guidance. Not a substitute for professional medical advice.