Get trimester-specific calorie and macronutrient targets based on ACOG guidelines. Adjusts for your pre-pregnancy weight, current weight, activity level, and twins.
| Trimester | Calories | Extra | Protein | Carbs | Fat |
|---|
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What you eat during pregnancy directly affects your baby development, your energy, and your postpartum recovery. Yet most pregnancy nutrition advice is either too vague (“eat healthy”) or too extreme (“eat for two”). The truth is specific: you need precise amounts of calories, protein, and key nutrients that change by trimester. This guide gives you the actual numbers.
| Pre-Pregnancy BMI | Category | Recommended Gain |
|---|---|---|
| < 18.5 | Underweight | 12.5 – 18 kg (28-40 lbs) |
| 18.5 – 24.9 | Normal | 11.5 – 16 kg (25-35 lbs) |
| 25 – 29.9 | Overweight | 7 – 11.5 kg (15-25 lbs) |
| 30+ | Obese | 5 – 9 kg (11-20 lbs) |
Scenario 1: Normal Weight, 2nd Trimester. Maria, 28, 165 cm, pre-pregnancy 60 kg (BMI 22), currently 65 kg, lightly active. Base TDEE: 1,810. T2 addition: +340. Daily target: 2,150 cal. Macros: 98g protein, 280g carbs, 72g fat. Weight gain so far: 5 kg (on track for 11.5-16 kg total). Use our Due Date Calculator for her timeline.
Scenario 2: Overweight, 3rd Trimester. Sarah, 32, 160 cm, pre-pregnancy 80 kg (BMI 31.2), currently 87 kg. TDEE: 1,950. T3 addition: +450. Daily: 2,400 cal. Protein: 131g (higher for T3). Weight gain: 7 kg (at top of 5-9 kg target for obese BMI). Her doctor monitors closely. Quality over quantity — nutrient-dense foods, not empty calories.
Scenario 3: Twins, 2nd Trimester. Priya, 30, 168 cm, pre-pregnancy 62 kg, currently 70 kg, carrying twins. Base TDEE: 1,860. T2 twin addition: +810 (340 x 1.5 + 300 base). Daily: 2,670 cal. Protein: 131g (25% more for twins). Weight gain: 8 kg (target 16-20.5 kg for normal BMI twins). Twin pregnancies need significantly more protein and calories.
Scenario 4: Active Mom, 1st Trimester. Lisa, 25, 170 cm, pre-pregnancy 58 kg, moderately active runner. TDEE: 2,080. T1 addition: +0. Daily: 2,080 cal (same as pre-pregnancy). No extra calories needed in T1. She continues running at reduced intensity (Zone 2) with doctor approval. Morning sickness limits appetite — she eats small frequent meals. Use our Calories Burned Calculator for exercise during pregnancy.
💡 Key insight: The most important nutrient in pregnancy is protein, not calories. Protein builds every cell in your baby body, supports placenta growth, and maintains your muscle mass. Most pregnant women undershoot protein and overshoot carbs. Track protein intake specifically — aim for the calculator target every day. Carbs and fat can flex.
| Folate | 600 mcg/day |
| Iron | 27 mg/day |
| Calcium | 1,000 mg/day |
| DHA Omega-3 | 200-300 mg/day |
| Vitamin D | 600 IU/day |