How to display a simulator for shipping rate by size, weight and location on the frontpage?

I would like to know if there is a plugin I can use to display a simulator on the frontpage. In my platform, I just take care of forwarding packages that my clients have already purchased on other platforms that doesn’t deliver to them (outside the us). I need to give my clients a quote (on the frontpage), based on size, weight and address, so they know much they should pay if they use my service. Currently, I use UPS for the delivery. I think the plugin should use an api call so I can get the correct price (negotiated price UPS), add my marge and give the quote. I hope I am understandable.

Thank you very much for your help