You may feel hungrier than usual one week, nauseated the next, and then suddenly full after three bites. That is why "how many calories when pregnant" needs a practical answer, not a guilt trip.
The short version: ACOG says most people need no extra calories in the first trimester, about 340 extra calories per day in the second trimester, and about 450 extra calories per day in the third trimester. Those numbers are a starting point, not a scorecard.
Pregnancy nutrition is less about eating twice as much and more about eating enough of the foods that carry protein, iron, calcium, folate, iodine, choline, vitamin D, and DHA.
Key Takeaways
- First trimester: usually no extra calories are needed, especially if nausea is strong.
- Second trimester: ACOG lists about 340 extra calories per day.
- Third trimester: ACOG lists about 450 extra calories per day.
- Food quality matters more than exact math. The extra calories should mostly come from protein, fiber-rich carbohydrates, healthy fats, and key pregnancy nutrients.
- Ask for personal advice if you are losing weight, gaining very quickly, carrying twins, have gestational diabetes, have a history of an eating disorder, or cannot keep food down.
Pregnancy calorie needs by trimester
Here is the clean trimester-by-trimester version.
| Stage | Typical extra calories | What that can look like |
|---|---|---|
| First trimester, weeks 1-13 | 0 extra for many people | Keep eating regular meals if you can. Focus on nausea survival, fluids, and a prenatal vitamin. |
| Second trimester, weeks 14-27 | About 340 extra per day | Add one solid snack or slightly larger meal: yogurt plus fruit and granola, or eggs and toast. |
| Third trimester, weeks 28-birth | About 450 extra per day | Add a snack plus a small meal boost: oatmeal with nut butter, lentil soup, or salmon with rice. |
These are population-level targets. Your body is not a spreadsheet. If your provider is happy with your growth, weight trend, blood work, and symptoms, you do not need to chase a perfect number.
First trimester: eat what stays down
The first trimester is often not the season for beautifully balanced plates. Nausea, smell sensitivity, food aversions, and exhaustion can shrink your menu fast.
ACOG notes that weight gain in the first 12 weeks may be only 1 to 5 pounds, or sometimes none. That is one reason extra calories are usually not needed yet.
If food feels hard, prioritize:
- Fluids: water, milk, smoothies, broth, or electrolyte drinks if advised
- Small, frequent meals: crackers, toast, cereal, yogurt, fruit, soup
- Protein when possible: eggs, Greek yogurt, cheese, tofu, beans, chicken, fish from low-mercury choices
- Your prenatal vitamin: especially folic acid early in pregnancy
If you cannot keep fluids down, are losing weight, or vomiting repeatedly, contact your OB-GYN or midwife. Severe nausea is treatable, and hydration matters.
Second trimester: add about 340 useful calories
The second trimester is when many people feel appetite return. It is also when calorie needs usually start rising.
A useful 340-calorie add-on could be:
- Greek yogurt, berries, and granola
- Two eggs with whole grain toast
- Oatmeal with milk, banana, and peanut butter
- Hummus, pita, carrots, and a boiled egg
- Lentil soup with a slice of whole grain bread
The goal is not to add 340 calories of anything. It is to use the extra space for nutrients pregnancy actually needs.
Try this simple plate template:
| Plate part | Aim for | Examples |
|---|---|---|
| Protein | Every meal | Eggs, fish, poultry, beans, lentils, tofu, yogurt |
| Fiber-rich carbs | Most meals | Oats, whole grain bread, potatoes, rice, beans, fruit |
| Healthy fat | Small portion | Avocado, olive oil, nuts, seeds, nut butter |
| Calcium food | 2-3 times daily | Milk, yogurt, cheese, fortified soy milk, calcium-set tofu |
| Color | At least one fruit or vegetable | Berries, citrus, leafy greens, peppers, carrots |
If you want a broader food safety overview, use the pregnancy diet and nutrition guide.
Third trimester: add about 450 calories without overstuffing yourself
The third trimester can be weird. Your energy needs are higher, but your stomach has less room. Heartburn, constipation, and feeling full quickly are common.
Instead of forcing huge meals, try smaller calorie-dense add-ons:
- Smoothie with Greek yogurt, fruit, oats, and nut butter
- Avocado toast with an egg
- Trail mix with nuts, dried fruit, and cereal
- Baked potato with beans, cheese, and salsa
- Salmon, rice, and vegetables
- Cottage cheese with fruit and whole grain crackers
The FDA and EPA recommend pregnant people eat 2 to 3 servings per week of lower-mercury fish from their "Best Choices" list. Fish like salmon, sardines, trout, shrimp, cod, and tilapia can help with protein and omega-3 fats.
What if you are hungrier than the guideline?
Hunger can change a lot by week. Activity level, body size, nausea recovery, sleep, stress, and pre-pregnancy weight all matter.
The guideline is not saying, "Ignore hunger after 450 calories." It is saying pregnancy usually does not require doubling your intake.
If you are hungry all the time, first check the meal structure:
- Is there protein at breakfast?
- Are you eating enough carbohydrates, not just salad and snacks?
- Are you going too long between meals?
- Are you drinking enough?
- Are you relying on sweets because real meals feel hard?
If the answer is yes and you are still constantly hungry, bring it up at your next prenatal visit. Your provider can look at weight trend, fetal growth, blood sugar, thyroid symptoms, anemia, and whether your personal target needs adjusting.
What if you are not hungry enough?
Low appetite can happen with nausea, reflux, constipation, anxiety, medication side effects, or simply the pressure of the third trimester.
Try making food smaller and easier:
- Eat every 2 to 3 hours while awake.
- Drink calories when chewing feels hard: smoothies, milk, drinkable yogurt, or soup.
- Add olive oil, avocado, cheese, nut butter, or hummus to foods you already tolerate.
- Keep bland backups nearby: toast, cereal, crackers, rice, bananas, applesauce.
Call your provider if you are losing weight after the first trimester, cannot keep fluids down, have signs of dehydration, or are worried about your baby's growth.
Key nutrients to build the calories around
The NIH Office of Dietary Supplements notes that prenatal supplements can help, but they do not always cover every nutrient in ideal amounts. Choline is a common gap, and vegetarian or vegan diets may need closer attention to iron, B12, iodine, choline, zinc, and DHA.
| Nutrient | Why it matters | Food ideas |
|---|---|---|
| Protein | Supports fetal growth and your changing blood volume | Eggs, fish, poultry, beans, lentils, tofu, Greek yogurt |
| Iron | Supports extra red blood cells | Meat, beans, lentils, spinach, fortified cereal, prenatal vitamin if advised |
| Calcium and vitamin D | Supports bones and teeth | Dairy, fortified milk, sardines, salmon, eggs, supplements if prescribed |
| Folate or folic acid | Supports early neural tube development | Prenatal vitamin, leafy greens, beans, fortified grains |
| Iodine | Supports thyroid and brain development | Iodized salt, dairy, seafood, eggs, prenatal label check |
| Choline | Supports brain and spinal cord development | Eggs, meat, fish, dairy, soybeans |
| DHA omega-3 | Supports brain and eye development | Low-mercury fish, algae-based DHA supplement |
For supplement label help, read best prenatal vitamins. If you are early in pregnancy, the due date calculator can help you map weeks to trimesters.
When calorie targets need individual advice
Ask your OB-GYN, midwife, or a registered dietitian for a personal plan if any of these apply:
- You started pregnancy underweight or with a higher BMI.
- You are carrying twins or more.
- You have gestational diabetes, type 1 diabetes, or type 2 diabetes.
- You have hyperemesis gravidarum or ongoing vomiting.
- You have a history of an eating disorder.
- Your provider is concerned about fetal growth.
- You are vegan, vegetarian, or have a very restricted diet.
- You are gaining much faster or slower than expected.
This is not about judgment. It is about making the general guideline fit your actual pregnancy.
A simple daily rhythm works better than calorie policing for most people: three meals, one to three snacks, protein each time, and a prenatal vitamin you can tolerate.
FAQ: pregnancy calories
How many calories when pregnant in the first trimester?
Most people do not need extra calories in the first trimester. If nausea limits your diet, focus on fluids, small meals, and your prenatal vitamin. Tell your provider if you are losing weight or cannot keep food down.
How many calories when pregnant in the second trimester?
ACOG lists about 340 extra calories per day in the second trimester. That can be one nutrient-dense snack or a modest increase across meals.
How many calories when pregnant in the third trimester?
ACOG lists about 450 extra calories per day in the third trimester. Smaller meals and snacks may be easier than large portions because reflux and fullness are common late in pregnancy.
Do I need to track calories during pregnancy?
Usually, no. Tracking can help some people, but it can also create stress. For most pregnancies, meal structure, nutrient quality, weight trend, symptoms, blood work, and fetal growth are better signals than a daily calorie total.
Is it okay to eat more than the guideline?
Sometimes, yes. The guideline is an average. Your needs can be higher if you are very active, started pregnancy underweight, are carrying multiples, or are catching up after nausea. Ask your provider if hunger feels extreme or your weight trend is outside the expected range.
This article is for informational purposes only and does not replace professional medical advice. Always ask your OB-GYN, midwife, or registered dietitian for guidance specific to your pregnancy.
Sources
- ACOG. Healthy Eating During Pregnancy
- ACOG. How much weight should I gain during pregnancy?
- NIH Office of Dietary Supplements. Dietary Supplements and Life Stages: Pregnancy
- FDA. Advice about Eating Fish
