Pregnancy Calorie Calculator
Estimate daily calorie needs during pregnancy based on pre-pregnancy weight, activity, and trimester (IOM/ACOG guidelines).
Personal Information
Pregnancy Calories Results
Recommended Daily Calories
2,236kcal/day
Maintenance (TDEE)
1,896kcal/day
Pregnancy Addition
340kcal/day
BMR (Resting)
1,379kcal/day
Recommended Weight Gain
25–35 lb (normal weight)
Real-World Examples
See how calculations work across different profiles.
2nd Trimester, Lightly Active
145 lb pre-pregnancy, 5'5", 30yrs
~2,440
kcal/day total
3rd Trimester, Moderate
160 lb pre-pregnancy, 5'7", 28yrs
~2,720
kcal/day total
1st Trimester, Sedentary
130 lb pre-pregnancy, 5'4", 26yrs
~1,900
kcal/day (no addition)
Reference Data
| Pre-pregnancy BMI | Category | Recommended Gain |
|---|---|---|
| Below 18.5 | Underweight | 28–40 lb |
| 18.5–24.9 | Normal | 25–35 lb |
| 25.0–29.9 | Overweight | 15–25 lb |
| 30.0 and above | Obese | 11–20 lb |
Frequently Asked Questions
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Frequently Asked Questions
How many extra calories do I need during pregnancy?
According to the Institute of Medicine (IOM) and American College of Obstetricians and Gynecologists (ACOG), most people need no extra calories in the 1st trimester, about 340 kcal/day more in the 2nd trimester, and about 452 kcal/day more in the 3rd trimester above pre-pregnancy needs. These are averages; your own needs depend on weight, activity, and how your pregnancy progresses.
Why are no extra calories recommended in the first trimester?
In the first trimester the fetus is very small and energy demands are minimal. Early weight gain is typically modest. The focus should be on nutrient quality (folate, iron, protein) rather than extra calories. Many people naturally eat a bit less early on due to nausea.
Where should the extra pregnancy calories come from?
Favor nutrient-dense foods rather than empty calories. Following USDA MyPlate guidance, build meals around vegetables, fruits, whole grains, lean protein, and dairy. Key nutrients include folate (leafy greens, legumes), iron (lean meats, beans), calcium, and DHA (low-mercury fish, walnuts). The FDA advises limiting caffeine to under 200 mg/day and avoiding alcohol entirely during pregnancy.
How much weight should I gain during pregnancy?
IOM guidance by pre-pregnancy BMI: underweight (BMI <18.5) 28–40 lb, normal weight (18.5–24.9) 25–35 lb, overweight (25–29.9) 15–25 lb, and obese (BMI ≥30) 11–20 lb. Total gain is spread across all trimesters; most occurs after the first.
Is it safe to diet or try to lose weight while pregnant?
Intentional weight loss is generally not recommended during pregnancy. If you are overweight or have obesity, your clinician may suggest controlled, supervised guidance, but calorie restriction should only be done under medical supervision. Always discuss weight goals with your obstetrician.
Should I count calories every day during pregnancy?
For most people, strict daily calorie counting is unnecessary. Eating to gentle hunger, following a balanced pattern, and tracking weight trend (not daily swings) is usually enough. Use this calculator as a planning estimate, and confirm specifics with your healthcare provider.
Educational use only. This calculator provides estimates for educational and informational purposes. It is not medical, nutritional, or dietary advice. Consult a registered dietitian or healthcare provider for personalized guidance.
Last updated: 2026 · CalorieFig Editorial Team