Water calculator
Daily water intake
Quick startPick a day type
Body weightUsed for the base estimate
Activity level
ClimateWhere you spend your day
Fine-tuneMeasure in bottles · Your day
Measure in bottlesOptional
Already drunk todayOptional — see what's left
glasses
Your dayShapes the sip schedule
Your daily goal: 2.6 litres, 10.5 glasses.
Your daily goal
2.6litres
of water a day · about 10.5 glasses or 5 half-litre bottles
Start
2 glasses
7:00 AM
Taper
9:00 PM
for better sleep.
Food fluid
+0.7 L
typical food water
- 2.6
- Litres
- 88
- Ounces
- 10.5
- Glasses
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 up2 glasses
- 6:12 PM · Top up2 glasses
- 9:00 PM · Wind down2 glasses
Ease off after 9:00 PM for better sleep.
Electrolytes? Skip them today
For everyday hydration, plain water and a normal diet cover your electrolytes just fine.
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.