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Pregnancy Calorie Calculator

Daily calorie needs during pregnancy — TDEE plus the trimester allowance (+340 in T2, +450 in T3).

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Pregnancy Calorie Calculator is free to use as often as you like, directly from this page. It covers +340 in T2, +450 in T3 — adjust any of them and the result follows immediately.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is Pregnancy Calorie Calculator?

Daily calorie needs during pregnancy — TDEE plus the trimester allowance (+340 in T2, +450 in T3).

What does it take into account?

It factors in +340 in T2, +450 in T3. Change any of them and the output follows immediately.

When would I actually use this?

Placing a pregnancy on the calendar: the estimated due date, the current week, and when the usual appointments and screenings fall.

What is the most common mistake?

Reading the due date as a deadline. It is a median: fewer than one birth in twenty happens on it, and a normal term spans several weeks around it.

How is Pregnancy Calorie Calculator different from Pregnancy Calendar?

They sit next to each other but answer different questions: Pregnancy Calendar is the one to open when you need it to a week-by-week pregnancy timeline with dates and trimesters, with your current week highlighted. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Pregnancy Weight Gain Calculator is the closest one after this: Recommended pregnancy weight gain by pre-pregnancy BMI (IOM), with the expected gain at your current week.

What else is worth having open alongside it?

Pregnancy week calculator and Alcohol Calorie Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Dating follows Naegele's rule (280 days from the last period) or the transfer date for assisted conception. An early ultrasound is more accurate than any calculation and takes precedence over it.

Further reading

All guides →
ExplainerEating for Two Is About Three Hundred Calories — and Almost None of Them in the First TrimesterThe extra energy a pregnancy costs is far smaller than the phrase suggests, and it arrives on a schedule: near zero in the first trimester, modest in the second, real in the third. Here are the published increments from EFSA, FAO/WHO/UNU and the 2023 US reference intakes, what they look like as food, and why protein and folate rise proportionally faster than calories do.GuideHow Much Weight to Gain in Pregnancy: The Guidelines by Starting BMIThe recommended range depends entirely on your BMI before pregnancy: 28 to 40 lb if you started underweight, 11 to 20 lb if you started with obesity. Here is the full table and the weekly rate behind it.ExplainerWhat Breastfeeding Actually Costs in Energy — and Why the Published Number Is Smaller Than the MilkMilk production has a computable cost: volume times energy density divided by the efficiency of conversion. Do the sum and you get about 675 kcal a day, not the 500 that gets quoted. Here is the derivation, why the published increment is deliberately lower, how much the real spread is between mothers, what the water requirement actually rests on, and why cutting calories while feeding is a clinical question.ExplainerIVF Dating Is the One Case Where the Date Is Actually KnownEvery other pregnancy is dated from an estimate. After IVF, fertilisation is timed to the hour, so gestational age is arithmetic: 266 days from fertilisation, minus the embryo's age at transfer. Here is the derivation for day-3, day-5 and day-6 embryos, why frozen and fresh transfers use the same rule, why an early scan rarely moves an IVF date, and what the two-week offset on a scan report means.GuidePregnancy Week by Week: The Calendar and What Each Stage MeansPregnancy is counted in 40 weeks from your last period, not from conception — so you are already two weeks pregnant at conception. Here is the full calendar, the trimester boundaries and what term actually means.ExplainerHow Much Milk Does a Baby Need? The Rule of Thumb and Its LimitsA formula-fed baby takes roughly 2.3 fl oz per pound of body weight per day in the first months, split across the day's feeds. Here is the table by age and weight, why breastfed babies are not measured this way, and the signs that outrank any number.