I assume this will be pretty simple but can't find a way to do it.

I see I can do something similar through Leads but I work as a copywriter for a lot of web development partners.

So they have a potential project, send me the details and then I provide a quote and we go from there.

So most of my work comes from only around 10 referral partners and because these are all contacts already I can't create new leads for them.

I basically want to know my conversion rate of all new leads and interest from previous clients and partners over the last month.

Any help would be awesome.