Precipitable Water Calculator

Table of Mixing Ratios and PW

Mixing Ratio (g/kg) Precipitable Water (meters)
0 0.000
5 0.047
10 0.093
15 0.140
20 0.186
25 0.233
30 0.279
35 0.326
40 0.373
45 0.419
50 0.466
55 0.512
60 0.559
65 0.606
70 0.652
75 0.699
80 0.745
85 0.792
90 0.838
95 0.885
100 0.932

ChartObject Precipitable Water (meters)

Directions:

Use this calculator to calculate the amount of precipitable water for a given column of air. Precipitable water is the total amount of water in a column of air. If all of the water vapor in that column suddenly condenses to become liquid water, what would the depth of that water be in the column? This amount is known as the precipitable water.

Input Values:

Average total-water mixing ration (rT) g/kg
Bottom of the troposphere (column segment, PB) millibars
Top of the troposphere (column segment, PT) millibars

Result:

Precipitable water in meters
Precipitable water in inches