This free water deficit reference table shows the free water deficit for a range of body weight values, assuming a current sodium of 154 mEq/L and a body water fraction (0.6 men, 0.5 women) of 0.6. Every figure is computed with the same engine that powers our Free Water Deficit Calculator, so the numbers are exact.
| Body weight | Free water deficit |
|---|---|
| 18 kg | 1.08 |
| 35 kg | 2.10 |
| 53 kg | 3.18 |
| 70 kg | 4.20 |
| 110 kg | 6.60 |
| 140 kg | 8.40 |
| 210 kg | 12.60 |
| 350 kg | 21.00 |
| 490 kg | 29.40 |
| 700 kg | 42.00 |
How to use this table
Find the row closest to your body weight and read across to the free water deficit. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Free Water Deficit Calculator for a precise answer.
Need a value that is not in the table? — the Free Water Deficit Calculator does it instantly, for free, with the formula and a worked example built in.
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