🛠️ New Tool
Water Intake Calculator — How Much Water Should You Drink Per Day? | Toolzie
How much water do YOU need per day? Find your personalized hydration target based on weight, activity level, and climate.
Formula: Base = 0.5–1 oz per lb of body weight (0.033 L per kg), then adjusted for activity, climate, and special conditions. For a 160 lb person, baseline is ~96–128 oz/day.
💧 Your Daily Water Target
Ounces
— oz
Cups (8 oz)
— cups
Milliliters
— mL
Liters
— L
⏰ Hydration Schedule
- 🌅 Morning (7 AM): — oz (1 glass upon waking)
- ☕ Mid-Morning (10 AM): — oz
- 🥗 Lunch (12:30 PM): — oz (1 glass with meal)
- 🥤 Afternoon (3 PM): — oz
- 🍽️ Dinner (6:30 PM): — oz (1 glass with meal)
- 🌙 Evening (8:30 PM): — oz (small to avoid sleep disruption)
📊 Breakdown
- Baseline (from body weight): — oz
- Activity bonus: — oz
- Climate adjustment: — oz
- Special condition: — oz
💧 Hit your target every day. A 32oz insulated water bottle makes it easy to track 4 refills a day.
📌 5 Hydration Tips
- ✓ Drink a glass of water first thing in the morning. You lose ~1 lb of water overnight through breathing and sweat — rehydrate before coffee.
- ✓ Don't wait until you're thirsty. Thirst is already a 1-2% dehydration signal. Sip consistently through the day instead.
- ✓ Add electrolytes for workouts over 60 min or hot weather. Plain water alone can dilute sodium levels during heavy sweating — pair with a pinch of salt or electrolyte powder.
- ✓ ~20% of your daily water comes from food. Cucumber, watermelon, oranges, soup, and yogurt all count. Don't double-count by drinking on top of a water-rich meal.
- ✓ Urine color is the easiest hydration check. Aim for pale straw-yellow. Clear = overhydrated; dark yellow = drink more within the next hour.
Disclaimer: This calculator provides general hydration estimates based on common formulas. Individual needs vary with health conditions, medications, altitude, and diet. Consult a doctor or registered dietitian for personalized advice.