to determine or ascertain by mathematical methods; compute

to calculate the velocity of light.

to determine by reasoning, common sense, or practical experience; estimate; evaluate; gauge.

to make suitable or fit for a purpose; adapt (usually used passively and with an infinitive)

His remarks were calculated to inspire our confidence.

Chiefly Northern U.S.

to think; guess.

to intend; plan.

to make a computation or form an estimate.

to count or rely (usually fol. by on or upon )

They calculated on good weather.

verb

account , add , adjust , appraise , assay , cast , cipher , consider , count , determine , divide , dope out * , enumerate , figure , forecast , foretell , gauge , guess , judge , keep tabs , measure , multiply , number , rate , reckon , size up , subtract , sum , take account of , tally , tot , tote up , value , weigh , work out , aim , anticipate , assume , bank on , build , count on , depend on , design , intend , plan , rely on , suppose , think likely , trust , compute , assess , evaluate , valuate , (colloq.)expect , average , contemplate , devise , estimate , examine , expect , infer , predict , prognosticate , project , reason , score , theorize , think