COSH Function in Excel: Syntax, Examples and Free Practice

By Rinkesh Shah, founder of Cellgrids.

COSH is an Excel Math & Trig function. Returns the hyperbolic cosine of a number.

COSH syntax

=COSH(number)

COSH is used in financial models and engineering-style calculations where precise numeric work is needed.

Open the live Excel-style spreadsheet and try COSH yourself. No Excel install or sign-up needed to start.

What does the COSH function do in Excel?

Returns the hyperbolic cosine of a number.

What is the syntax of COSH in Excel?

The syntax is =COSH(number). number: A number to use in the calculation.

Where can I practice COSH online for free?

Open the free live spreadsheet on Cellgrids and try COSH yourself. No Excel install is needed and you can start without signing up.