[shannon]

Try using this calculator. It has a selection for being male at birth. I have found it to be pretty close, but it is still a trial and error for different bra manufactures.
You can also check out Bratabase.com. They have measurements for a wide variety of bra manufacturers.

For example:
I love my 42DD Cacique, but they don't make it anymore.
https://www.flickr.com/photos/185932746@N07/52456782974/in/datetaken-public/

I also love my Curvy Couture 40H.
https://www.flickr.com/photos/185932746@...en-public/

But after a good pumping I can fit into my Parfait Charlotte Bra 38K
https://www.flickr.com/photos/185932746@...en-public/


You can also check out Bratabase.com. They have measurements for a wide variety of bra manufacturers.