How to calculate shipping method by weight , city of warehouse and city of customer ?

need to know How to calculate shipping method by weight , city of warehouse and city of customer  ?

The Shipping by Weight plugin can be configured for Warehouses. In Configuration > Settings > Shipping Settings, you can select "Use warehouse location".  However, it requires that you assign warehouses to products, but if you have products in "Multiple Warehouses", then nopCommerce is not smart enough to choose the warehouse closest to the customer.

The Shipping By Weight plugin can be configured for for the destination (customer) Country and State - not "city".  But, you may be able to use the States to hold your cities.

But i have different shipping fees depends on locations , like from state 1 to state 2 will be 30 , from state 1 to the same state 20  
How will configure this

When you 'Add record', you select values for
Warehouse
Country
State

ok i will try it

' Shipping options could not be loaded '
i get this message at checkout :(
i do what you said

i found it because i must enter Zip / postal code
but in my country not depend on this
want to skip this Zip / postal code from estimate shipping

' Shipping options could not be loaded ' usually means that the rate provider (Shipping By Weight in your case) is not returning any method/rates that match.  Be sure you have a 'wildcard' record with * in all fields and a from / to range like 0 - 9999999, so that it will match if nothing else more specific matches.

Am not understand what you mean by wildcard

If you mean make record with empty fields , i do this and still have the same problem