Total Body Water Calculator [Body Water Intake]
To find your total body water, multiply your body weight by 2/3. To convert it to volume, divide your body weight by 62.4.
Formula:
WW = 2/3 × BW
WV = BW ÷ 62.4
Table of Variables
| Variable | Meaning |
|---|---|
| WW | Weight of Water in Body (kg) |
| WV | Volume of Water (litres) |
| BW | Body Weight (kg) |
What is a Total Body Water Calculator | Estimate The Requirement Of Water In Your Body & Its Importance:
Your body is mostly water — and the Total Body Water Calculator helps you figure out just how much. On average, about two-thirds of your weight is water. This tool uses simple math to estimate that amount, whether you’re looking at it by weight or volume. It’s quick, free, and makes science feel like common sense.
Ever wondered how to calculate total body water from weight? Or needed the total body water in litres? This calculator handles both, whether you’re male or female. There are versions based on the Watson formula for total body water too, and special adjustments for total body water calculation female.
You can use this to understand your body water percentage, compare it to a total body water percentage chart, or even check for a body water deficit. If you’re working on hydration, health, or just learning how the body works, this calculator gives you the answers—no lab coat required.
