Pregnancy
Pregnancy Water Intake Calculator
Quick answer
Pregnancy, breastfeeding, and GLP-1 medicines do not automatically change this estimate. Population total-water references include food; they are not minimum drinking doses. Follow individual clinical advice.
Fine-tuneMeasure in bottles · Your day
Pregnancy, breastfeeding, and GLP-1 medicines do not automatically change this estimate. Population total-water references include food; they are not minimum drinking doses. Follow individual clinical advice.
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Your daily goal: 2.7 Litres, 11 glasses.
Your daily goal
Updates instantlyof water a day · about 11 glasses · 5.5 half-litre bottles
Planning scenarios: 2.5-3.2 Litres. Use it as a flexible target, not a medical limit.
Start
2 glasses
7:00 AM
Taper
9:00 PM
for better sleep.
Food fluid
+0.7 L
typical food water
- 2.7
- Litres
- 91
- Ounces
- 11
- glasses
Why this number
WaterDailyGoal uses 33 ml/kg for a beverage planning estimate. The 30–40 ml/kg scenarios and activity/climate coefficients are site assumptions, not validated personal requirements or NAM/EFSA formulas. Pregnancy, breastfeeding, and GLP-1 medicines do not automatically change this estimate. Population total-water references include food; they are not minimum drinking doses. Follow individual clinical advice.
Full methodologyCheck personal limits
Use this estimate as a planning note because your inputs include:
- pregnancy
Follow clinician guidance first if you have symptoms, fluid limits, kidney/heart concerns, or medication instructions.
Read safety guidanceNext step
Your sip schedule
- 7:00 AM · Start the day2 glasses
- 9:48 AM · Top up2 glasses
- 12:36 PM · Top up2 glasses
- 3:24 PM · Top up1.5 glasses
- 6:12 PM · Top up1.5 glasses
- 9:00 PM · Wind down1.8 glasses
Ease off after 9:00 PM for better sleep.
Electrolytes? Not automatic
Electrolytes are not automatic. Long or heavy sweating and vomiting or diarrhea need different approaches; food, losses and medical restrictions matter. Ask a clinician or pharmacist when illness is involved.
A friendly estimate for healthy adults, not medical advice. Your needs rise with heat, exercise, illness, pregnancy, and some medications. Don't drink more than ~1 litre per hour.
Your daily goal
2.7 Litres
The link and preview image include your weight and settings.
Pregnancy water target examples
Pregnancy, breastfeeding, and GLP-1 medicines do not automatically change this estimate. Population total-water references include food; they are not minimum drinking doses. Follow individual clinical advice.
| Body weight | Estimated goal | Glasses | Note |
|---|---|---|---|
| 60 kg | 2.3 L | 9 | Check your individual plan |
| 70 kg | 2.6 L | 10.5 | Check your individual plan |
| 80 kg | 2.9 L | 11.5 | Check your individual plan |
| 90 kg | 3.3 L | 13 | Check your individual plan |
Make it easier to tolerate
Pregnancy can make large drinks uncomfortable. Smaller servings spread across the day often work better: a glass on waking, steady sips between meals, and extra fluid after walks or warm weather.
When to ask for help
Call your clinician if you cannot keep fluids down, urinate very little, feel faint, have severe headache, or notice sudden swelling. Those are not calculator problems; they need personal care.
Frequently asked
How much water should I drink while pregnant?
Pregnancy, breastfeeding, and GLP-1 medicines do not automatically change this estimate. Population total-water references include food; they are not minimum drinking doses. Follow individual clinical advice.
Do I need more water in the first trimester?
Often yes if nausea, vomiting, or food aversions reduce intake. Small, steady sips may be easier than large glasses. Call your clinician if you cannot keep fluids down or have signs of dehydration.
Can pregnant people drink too much water?
Yes. Spread fluids across the day and avoid forcing large amounts quickly. If you have kidney, heart, blood-pressure, or swelling concerns, ask your prenatal clinician for a personal limit.
Sources
- 1.U.S. National Academies (IOM/NAM), 2005 — Adequate total water intake of about 3.7 L/day for men and 2.7 L/day for women, including water from food and all beverages.Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate, Summary: water adequate intakes; drinks and food
- 2.European Food Safety Authority (EFSA), 2010 — Adequate total water intake of 2.5 L/day for men and 2.0 L/day for women under temperate conditions.Scientific Opinion on Dietary Reference Values for water, EFSA Journal 8(3):1459, abstract and conclusions
- 3.Mayo Clinic — General guidance of roughly 2.7–3.7 L of total fluids a day, with thirst and pale-yellow urine as everyday checks.
- 4.American College of Obstetricians and Gynecologists (ACOG) — Advises 8 to 12 cups (64 to 96 ounces) of water a day during pregnancy, and notes that water helps form the amniotic fluid and helps nutrients and waste move through the body.