Calculate Distance between two Pin (Zip) code in SQL Server

Hello

i want to calculate Distance in KM from two pincode.

i have code its asking for billing.

<DistanceMatrixResponse>
    <status>REQUEST_DENIED</status>
    <error_message>
        You must enable Billing on the Google Cloud Project at https://console.cloud.google.com/project/_/billing/enable Learn more at https://developers.google.com/maps/gmp-get-started
    </error_message>
</DistanceMatrixResponse>

have any alternate solution.

is it posible to calculate Distance in KM from two pincode in SQL Server.

       protected void btnsubmit_Click(object sender, EventArgs e)
       {
           GetDistance(txtZip1.Text, txtZip2.Text);
       }
 
       public void GetDistance(string origin, string destination)
       {
           string url = @"https://maps.googleapis.com/maps/api/distancematrix/xml?key=AIzaSyD76RsJFYvlTD2Xxv1o8TqW9Ql_Lv7ph30&origins=" + origin + "&destinations=" + destination + "&sensor=false";
 
           HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
           WebResponse response = request.GetResponse();
           Stream dataStream = response.GetResponseStream();
           StreamReader sreader = new StreamReader(dataStream);
           string responsereader = sreader.ReadToEnd();
           response.Close();
 
           DataSet ds = new DataSet();
           ds.ReadXml(new XmlTextReader(new StringReader(responsereader)));
           if (ds.Tables.Count > 0)
           {
               if (ds.Tables["element"].Rows[0]["status"].ToString() == "OK")
               {
                   lblDuration.Text = ds.Tables["duration"].Rows[0]["text"].ToString();
                   lblDistance.Text = ds.Tables["distance"].Rows[0]["text"].ToString();
               }
           } 
       }