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Pregnancy Calorie Calculator

Estimate your daily pregnancy calories by trimester, see your extra calorie needs, pregnancy-focused macro targets, and track healthy weight gain with practical food guidance.

✅ Daily calories by trimester ✅ Pregnancy macro guidance ✅ Weight gain tracker
Last updated: March 2026

📝 Enter Pregnancy Details

Use pre-pregnancy weight for the best estimate. Current weight and pregnancy week improve your weight gain tracking.

If you enter pregnancy week below, the trimester will auto-sync.
Please enter a valid age (14–55).
This helps estimate where your weight gain should roughly be at this point.
Please enter a valid pregnancy week (1–40).
Please choose an activity level.
Please enter a valid height (120–220 cm).
Please enter a valid pre-pregnancy weight (30–250 kg).
Please enter a valid current weight (30–300 kg).

Results & Pregnancy Insights

Your estimate updates live as you type.

👈 Enter your pregnancy details to estimate calories and nutrition targets

Required: age, activity, height, pre-pregnancy weight, trimester.
📌 Practical note

Pregnancy nutrition is not just “eat more” — it’s eat smart

During pregnancy, your calorie needs rise gradually, but food quality matters just as much as quantity. This calculator helps you estimate calories, understand trimester-based needs, plan better macros, and track pregnancy weight gain in a calmer, clearer way.

What Is a Pregnancy Calorie Calculator?

A pregnancy calorie calculator estimates how many calories you may need per day during pregnancy. It starts with your likely maintenance calories before pregnancy, then adds trimester-specific energy needs. It can also give you useful nutrition targets such as protein, carbs, fiber, and a healthy weight gain range.

How to Use This Pregnancy Calorie Calculator

  1. Choose metric or imperial units — use whichever feels easiest.
  2. Enter age, height, and pre-pregnancy weight — these are the main inputs for the estimate.
  3. Select your activity level — this helps estimate baseline calorie needs.
  4. Select trimester or enter pregnancy week — the tool will apply the right trimester calorie addition.
  5. Optionally add current weight — this unlocks a more useful pregnancy weight gain tracker.
  6. Read your results — daily calories, macro guidance, weight gain range, and pregnancy nutrition tips.

How This Calculator Estimates Pregnancy Calories

1) Baseline calorie estimate

Your pre-pregnancy maintenance calories are estimated using your age, height, weight, and activity level. This gives a practical starting point before pregnancy-specific additions are applied.

2) Trimester calorie additions

This calculator uses a simple, widely used pregnancy calorie framework for singleton pregnancy: 1st trimester: +0, 2nd trimester: +340, and 3rd trimester: +450 calories per day.

3) Macro guidance

Pregnancy nutrition is more than calories. This tool also gives practical targets for protein, carbohydrates, fats, and fiber to support both maternal needs and fetal development.

4) Weight gain tracking

Healthy pregnancy weight gain depends heavily on pre-pregnancy BMI. That is why this tool uses your pre-pregnancy weight instead of only your current weight.

Trimester Calorie Additions

Trimester Typical extra calories/day Simple meaning
1st trimester +0 Most people do not need extra calories yet beyond baseline needs
2nd trimester +340 Energy needs usually rise as fetal growth and maternal tissue expansion increase
3rd trimester +450 Energy needs are typically highest during late pregnancy

These are general estimates for singleton pregnancy, not a personalized medical prescription.

Recommended Pregnancy Weight Gain by Pre-Pregnancy BMI

Pre-pregnancy BMI Category Total weight gain Approx. rate in 2nd/3rd trimester
< 18.5 Underweight 28–40 lb (12.5–18 kg) About 1.0–1.3 lb/week
18.5–24.9 Normal weight 25–35 lb (11.5–16 kg) About 0.8–1.0 lb/week
25.0–29.9 Overweight 15–25 lb (7–11.5 kg) About 0.5–0.7 lb/week
≥ 30.0 Obesity 11–20 lb (5–9 kg) About 0.4–0.6 lb/week

Reference ranges are for singleton pregnancy and are commonly used as a starting point for counseling.

Foods to Eat and Foods to Avoid During Pregnancy

✅ Foods to emphasize

  • Lean proteins like eggs, chicken, fish lower in mercury, beans, lentils, tofu, and Greek yogurt
  • High-fiber carbs such as oats, fruit, whole grain bread, rice, potatoes, and legumes
  • Healthy fats from avocado, nuts, seeds, olive oil, and nut butters
  • Iron-rich foods like lean red meat, beans, spinach, fortified cereals, and lentils
  • Calcium sources such as milk, yogurt, cheese, fortified alternatives, and tofu
  • Choline-rich foods like eggs, dairy, fish, and lean meats
  • Hydrating foods and fluids, especially if constipation or nausea is an issue

🚫 Foods to avoid or be cautious with

  • High-mercury fish such as shark, swordfish, king mackerel, and tilefish
  • Unpasteurized milk, cheese, or juice
  • Raw or undercooked eggs, meat, poultry, or seafood
  • Deli meats and hot dogs unless reheated until steaming hot
  • Excess caffeine — many people are told to stay below about 200 mg/day
  • Alcohol during pregnancy
  • Raw sprouts unless thoroughly cooked

Frequently Asked Questions (Pregnancy Calories)

A common general estimate for singleton pregnancy is +0 in the first trimester, +340 calories/day in the second trimester, and +450 calories/day in the third trimester on top of baseline needs.
In many practical guidance models, most people do not add extra calories during the first trimester beyond baseline maintenance needs.
A commonly used pregnancy minimum is about 71 grams of protein per day, though some people may benefit from a slightly higher intake depending on body size and clinical guidance.
A widely referenced minimum is 175 grams of carbohydrate per day during pregnancy, but many people will naturally eat more depending on total calorie needs.
Pre-pregnancy weight helps estimate baseline needs and determines the recommended pregnancy weight gain range more accurately than current pregnancy weight alone.
Common foods to avoid include alcohol, unpasteurized dairy, raw or undercooked eggs, meat or seafood, high-mercury fish, and deli meats that are not reheated until steaming hot.
This tool is designed for singleton pregnancy estimates. Multiple pregnancy often changes calorie and weight gain guidance, so use clinician advice first.
No. It is a practical estimate tool. For high-risk pregnancy, gestational diabetes, severe nausea, or special medical conditions, follow your clinician’s plan first.