ICM Logo Matthias Tomczak

Enter your values: red boxes are mandatory

T (ºC), temperature: *

S, salinity: *

P (db, 10 kPa), pressure: *

c (T, S, P) = m/s

This calculator computes the Sound speed in seawater

Note:10 kPa = 1 dbar is close to the pressure increase that corresponds to a depth increase of 1 m. If you enter a pressure value equal to the depth in metres it will give an approximate result.

Temperature uses IPTS-68, salinity uses PSS-78; see reference.

Calculation based on Fofonoff, P. and R. C. Millard Jr (1983) Algorithms for computation of fundamental properties of seawater.Unesco Technical Papers in Marine Sciences 44, 53 pp.