Spherical and Cartesian coordinates
Caution: Different authors use different conventions for the symbols theta and phi. They are frequently reversed. The convention used here is from Griffiths

Eqn:B.1 

Eqn:B.2 

Eqn:B.3 
Spherical and Cartesian coordinate conversions
Some identities. (Griffiths pp. 38, and back cover) Conversion between spherical and Cartesian coordinates

Eqn:B.4 

Eqn:B.5 
Gradient and Curl in Spherical coordinates
Some identities. (Griffiths pp. 42,447) Gradient and Curl in spherical coordinates:
See Also
References
 GriffithsED – Introduction to ElectroDynamics, (3rd edition) 1999
External Links