Skip to main content
Calcimator

Water Intake Calculator

Calculate how much water you should drink daily based on your weight, activity level, and climate.

Inputs

lbs

Results

Daily Water (oz)

101 oz

Daily Water (L)3 L
8 oz Glasses13
500ml Bottles6
1L Bottles3
Cups12.6

Daily Water (oz)

101 oz

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Body Weight — Body weight in the selected unit. Accepts values from 50 lbs to 500 lbs (default: 170 lbs).
  3. Activity Level — Your typical level of physical activity. Choose from: Sedentary, Moderate Exercise, Active (daily exercise), Very Active (intense). default: 2.
  4. Climate — Expected climate at destination. Choose from: Temperate, Hot / Humid, Very Hot. default: 1.
  5. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  6. Daily Water (oz) — shown as a numeric value. This is the primary result of this calculator.
  7. Daily Water (L) — shown as a numeric value.
  8. 8 oz Glasses — shown as a numeric value.
  9. 500ml Bottles — shown as a numeric value.
  10. 1L Bottles — shown as a numeric value.
  11. Cups — shown as a numeric value.
  12. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
Ad Placeholder

Related Calculators

Calorie & TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) and daily calorie needs based on your age, weight, height, and activity level.

BMI Calculator

Calculate your Body Mass Index (BMI) to assess your weight category. Supports both imperial and metric units.

Body Fat Percentage Calculator

Estimate your body fat percentage using the US Navy method. Determine your body composition category and fat vs lean mass.

Ad Placeholder