Meters of seawater to pounds per square inch
Type a value in msw to get it in psi instantly.
58.78psi
That's 1.43× as deep as an open water dive, while the recreational limit is 1.25× deeper. A lungful of surface air would be squeezed to about one 4th of its volume.
What it means
How much pressure is that?
Seawater adds one atmosphere every 10 m; fresh water needs 10.3 m for the same, because it is less dense.
The math
How to convert msw to psi
Depth adds to the atmosphere already above you: ATA = depth in msw ÷ 10 + 1, and in feet ATA = fsw ÷ 33 + 1.
Example: 30 msw = 58.7838 psi.
Every unit
Your depth in every unit
Tables
msw to psi conversion table
| msw | psi |
|---|---|
| 0 msw | 14.6959 psi |
| 5 msw | 22.0439 psi |
| 10 msw | 29.3919 psi |
| 15 msw | 36.7399 psi |
| 20 msw | 44.0878 psi |
| 30 msw | 58.7838 psi |
| 40 msw | 73.4797 psi |
| 50 msw | 88.1757 psi |
| 60 msw | 102.872 psi |
| 100 msw | 161.655 psi |
| 200 msw | 308.615 psi |
psi to msw conversion table
| psi | msw |
|---|---|
| 0 psi | -10 msw |
| 5 psi | -6.5977 msw |
| 10 psi | -3.1954 msw |
| 15 psi | 0.206895 msw |
| 20 psi | 3.60919 msw |
| 30 psi | 10.4138 msw |
| 40 psi | 17.2184 msw |
| 50 psi | 24.023 msw |
| 60 psi | 30.8276 msw |
| 100 psi | 58.046 msw |
| 200 psi | 126.092 msw |
Quick answers
Quick answers
- How many psi is 1 msw?
- 1 msw is 16.1655 psi.
- How many psi is 10 msw?
- 10 msw is 29.3919 psi.
- How many psi is 30 msw?
- 30 msw is 58.7838 psi.
The units
About these units
Meters of seawater (msw)
Depth in the sea. Every 10 m adds one atmosphere.
Pounds per square inch (psi)
The US pressure unit, on tank and gauge markings.
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