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Brack Calc is a tool for using specific gravity and temperature to calculate salinity. Designed primarily for aquarists keeping brackish water fish, also has some use for marine biologists.

What's New

Version 4.2.4d0:
  • Added concentration (weights of salt per unit volume of water) in metric and imperial units.


Mac OS X 10.3 or later

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Brack Calc User Discussion

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Anonymous Member IconReview

Absolutely Fantastic! Thanks for taking the time to construct this app!


Reply1 reply
Version 3.0
Anonymous Member Icon

No problem, and thanks for the positive feedback.



Anonymous Member IconReview

I woud not use an app like this because... well i have no fishes :) but I think it's always nice of people taking the time to make those apps that make you glad to have a Mac helping in your life... We are getting all the advantages of OS X (Stable and easy) and all of Windows (Lots of app for all pupose).


Reply2 replies
Version 2.0.2

BTW, the plural of fish is... fish. ;)

Anonymous Member Icon

it depends on the context:

[quoting here]
Fishes is the proper English plural form of fish that biologists use when speaking about two or more fish species, as in "There are over 25,000 fishes in the world" (meaning that there are over 25,000 fish species in the world). When speaking of many fish that all are part of the same species, then the word "fish" is used, as in "There are several million fish in the species Gadus morhua."

cheers, phil

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> 5 1


Current Version (4.x)


Downloads 3,004
Version Downloads 38
License Free
Date 02 Sep 2008
Platform OS X / PPC 32 / Intel 32
Price Free
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