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Daily Water Intake: ounces (which is litres or cups)
Water Calculator – How Much Water Should You Drink Daily?
The Water Calculator helps you estimate water volume for different uses — from filling a pool or tank to calculating your recommended daily water intake for good health.
How to Use the Water Calculator
Choose what you need:
- 📏 Volume: Enter dimensions of your pool, tank, or container (length, width, depth)
- 💧 Intake: Enter your body weight and activity level to find out how much water to drink daily
The calculator shows water volume in gallons, liters, or cubic feet and your daily intake in liters or ounces.
Water Volume Formula
Rectangular Pool/Tank: Volume = Length × Width × Depth
Daily Intake: Daily Water (oz) = Body Weight (lbs) × 0.67 + extra for exercise
Example
Pool: 10 ft × 5 ft × 4 ft = 200 cubic ft = ~1,500 gallons
Intake: 150 lbs → 150 × 0.67 = 100.5 oz daily
Common Use Cases
- Filling pools or hot tubs
- Water tank capacity planning
- Garden irrigation planning
- Calculating daily water needs
- Supporting healthy hydration habits
Why Use a Water Calculator?
This tool helps you avoid guesswork when planning water storage or making sure you drink enough water daily for better health and energy.
Frequently Asked Questions (FAQs)
How accurate is this?
It’s an estimate — for exact pool/tank measurements, measure dimensions carefully.
How much water should I drink daily?
About half your body weight (lbs) in ounces, plus extra for exercise or hot weather.
What units can I use?
You can calculate in feet, meters, gallons, liters, or cubic feet.
Does this work for large tanks?
Yes! Works for any size container if you have the dimensions.
Can I save the results?
Copy your results or print them for planning purposes.
Related tools: Volume Calculator, Water Intake Calculator.