get data from Leads converted to account/contact

Can someone help me with a Request URL to get data of converted Leads?

To get the leads data I use this Request URL: https://crm.zoho.com/crm/private/xml/Leads/getRecords?authtoken= Auth Token &scope=crmapi

Now I want to know when a lead converted to a Account/Contact. Is there a same sort of request URL that I can use. Or is there a datetime field that shows the date that the lead converted to a Account/Contact?

Hope someone can help me with this.

Thanks!