Ascertain/determine from given facts, figures or information

To calculate is to make a mathematical computation.

1560s, "to compute, to estimate by mathematical means," from Latin calculatus, past participle of calculare "to reckon, compute," from calculus (see calculus). Meaning "to pla [..]

to work something out, a mathematical operation.

/ˈkælkjəˌleɪt/ verb calculates; calculated; calculating calculate /ˈkælkjəˌleɪt/ verb calculates; calculated; calculating Learner's definition of CALCULATE [+ object] 1  : to find (a number, [..]

to reach a conclusion by mathematical or logical methods.

make a mathematical calculation or computation judge to be probable account: keep an account of forecast: predict in advance specifically design a product, event, or activity for a certain public coun [..]

to adjust, estimate, arrange

  prophesy.

To compute or simplify.

Comes from calculus, the Latin word for pebble. In Ancient Rome, as in Ancient Greece, pebbles were used in the abacus or counting frame in order to carry out basic arithmetic computations (see abacus [..]

To work out the value of something. This does not have to mean you need a calculator!

(v) make a mathematical calculation or computation(v) judge to be probable(v) keep an account of(v) predict in advance(v) specifically design a product, event, or activity for a certain public(v) have [..]

Ascertain/determine from given facts, figures or information

prophesy