THEORETICAL DEPTH AT ALTITUDE - METRIC (UPDATED VERSION)
Surface Atmospheric Pressure (in atm)
at Various Altitudes (of meters above sea level)
                     
300 600 900 1200 1500 1800 2100 2400 2700 3000
0.9649 0.9309 0.8978 0.8657 0.8345 0.8042 0.7749 0.7464 0.7187 0.6919
Actual
Depth Theoretical Ocean Depth (in msw)
(mfw) at Various Altitudes (of meters above sea level)
                     
300 600 900 1200 1500 1800 2100 2400 2700 3000
0 0 0 0 0 0 0 0 0 0 0
2 2 2 2 2 2 2 3 3 3 3
4 4 4 4 4 5 5 5 5 5 6
6 6 6 7 7 7 7 8 8 8 8
8 8 8 9 9 9 10 10 10 11 11
10 10 10 11 11 12 12 13 13 14 14
12 12 13 13 13 14 15 15 16 16 17
14 14 15 15 16 16 17 18 18 19 20
16 16 17 17 18 19 19 20 21 22 23
18 18 19 20 20 21 22 23 23 24 25
20 20 21 22 22 23 24 25 26 27 28
22 22 23 24 25 26 27 28 29 30 31
24 24 25 26 27 28 29 30 31 33 34
26 26 27 28 29 30 31 33 34 35 37
28 28 29 30 31 33 34 35 37 38 39
30 30 31 33 34 35 36 38 39 41 42
32 32 33 35 36 37 39 40 42 43 45
34 34 36 37 38 40 41 43 44 46 48
36 36 38 39 40 42 44 45 47 49 51
38 38 40 41 43 44 46 48 50 51 53
40 40 42 43 45 47 48 50 52 54 56
Ocean
Stop
Depth Safety/Emergency Decompression Stop Depth (in mfw)
(msw) at Various Altitudes (of meters above sea level)
                     
300 600 900 1200 1500 1800 2100 2400 2700 3000
4.0 4.0 3.8 3.7 3.6 3.4 3.3 3.2 3.1 3.0 2.8
6.0 5.9 5.7 5.5 5.3 5.1 5.0 4.8 4.6 4.4 4.3