The Collaborative International Dictionary of English v.0.48:
Calculable \Cal"cu*la*ble\, a. [Cf. F. calculable.] That may be calculated or ascertained by calculation. [1913 Webster]WordNet (r) 3.0 (2006):
calculable adj 1: capable of being calculated or estimated; "a calculable risk"; "calculable odds" [ant: incalculable]