There are so many ways for create a contact from account detail page. In this i let you know the easiest way:
Create a Account detail page VF Button. Make a standard controller and VF page with contact fields in editable formate. Give this page URL in VF button. Using controller fill all the account information in contact field and put the save functionality in it.
Using this you can fill field with account information according to your need. Please try and let me know if there is any other question.
There are so many ways for create a contact from account detail page.
In this i let you know the easiest way:
Create a Account detail page VF Button. Make a standard controller and VF page with contact fields in editable formate.
Give this page URL in VF button. Using controller fill all the account information in contact field and put the save functionality in it.
Using this you can fill field with account information according to your need.
Please try and let me know if there is any other question.
Thanks