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Table A4.5 Depth and Pressure Chart
FEET
Depth of
PSI
Bar
0.43
0.03
1
0.87
0.06
2
1.3
0.09
3
1.7
0.12
4
2.2
0.15
5
2.6
0.18
6
3.0
0.21
7
3.5
0.24
8
3.9
0.27
9
4.3
0.30
10
8.7
0.60
20
13.0
0.90
30
17.3
1.2
40
21.7
1.5
50
The figures shown above are for pure water at a temperature of 39.4
adjusted for use in liquids with a different density.
NOTE: The 'Depth and Pressure Chart' can be used to find the pressure of water in Bar or PSI at any
given depth in feet or meters. Assume you want to find the pressure at a depth of 50 feet. Locate 50 in
the 'Depth of Water' column. Then go left into the 'feet' section of the table to read the pressure as 21.7
PSI or 1.5 Bar. To find the pressure at 10 meters locate 10 in the depth column then go right into the
'meters' section of the table to read the pressure as PSI or 0.98 Bar. For depth values not given, add the
results from individual readings, for example: the pressure at a depth of 85 (meters or feet) is the sum of
the pressures for 80 + 5 (meters or feet).
46
METERS
water
PSI
Bar
1.4
0.10
2.8
0.20
4.3
0.29
5.7
0.39
7.1
0.49
8.5
0.59
9.9
0.69
11.4
0.78
12.8
0.88
14.2
0.98
28.4
2.0
42.6
2.9
56.8
3.9
71.0
4.9
26.0
1.8
60
30.3
2.1
70
34.6
2.4
80
39.0
2.7
90
43.3
3.0
100
86.6
6.0
200
130
9.0
300
173
11.9
400
217
14.9
500
260
17.9
600
303
20.9
700
346
23.9
800
390
26.9
900
433
29.9
1000
866
59.7
2000
1299
89.6
3000
1732
119
4000
o
F (4°C). The figures will need to be
85.2
5.9
99.5
6.9
114
7.8
128
8.8
142
9.8
284
19.6
426
29.4
568
39.2
710
49.0
852
58.8
995
68.6
1137
78.4
1279
88.2
1421
98.0
2842
196
4262
294
5683
392
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