How to calculate Pump head?

the main equation to calculate the pump head and friction losses is

Darcy-Weisbach

Colebrook

Hazen-Williams

you may use a program for calculating the head like 

H-SYM elite program

Train pipe sizer

Pipe flow expert

this program is easy to use and you can deal with it easily 

if you search for excel sheet on the internet you will fined many 

if you need an example try to contact me at en_sherif_m at yahoo