Here is what I found on the internet, Suzanne:

Chicken, bone-in breast, cooked, cubed 1 pound (2 medium) = 1 1/2 cups (1 cup = .67 pound)

Chicken, skinless, boneless breast, cooked, cubed .60 pound (2 medium) = 1 1/2 cups (1 cup = .40 pound)

4 1/2 cups = 3 pound chicken, cooked/diced

Chicken 3/4 pound boned 2 cups cooked and diced

2 cups cooked, cubed chicken = 1 1/2 pounds chicken breasts