Per Basketball Reference, the Cleveland Cavaliers currently hold the best odds to win Eastern Conference

Source

1) Cleveland 19.0%

2) Chicago 16.0%

3) Miami 13.4%

4) Milwaukee 13.1%

5) Atlanta 11.8%

6) Brooklyn 11.5%

7) Boston 4.0%

8) Philadelphia 3.1%

Golden State currently leads the Western Conference with 57.6% odds.