We have put together a list of words that are similar to CALCULATION.

17 Alternative Words Similar to calculation

1 Computation Noun      Synonym Words Like Computation
2 Figuring Noun      Synonym Words Like Figuring
3 Reckoning Noun      Synonym Words Like Reckoning
4 Deliberation Noun      Synonym Words Like Deliberation
5 Preparation Noun      Synonym Words Like Preparation
6 Procedure Noun      Synonym Words Like Procedure
7 Process Noun      Synonym Words Like Process
8 Extrapolation Noun      Hyponym
9 Idea Noun      Hyponym Words Like Idea
10 Estimation Noun      Hyponym Words Like Estimation
11 Interpolation Noun      Hyponym Words Like Interpolation
12 Estimate Noun      Hyponym Words Like Estimate
13 Integral Noun      Hyponym Words Like Integral
14 Derivative Noun      Hyponym Words Like Derivative
15 Approximation Noun      Hyponym Words Like Approximation
16 Operation Noun      Hyponym Words Like Operation
17 Recalculation Noun      Hyponym

10 definitions of calculation

1 The act or process, or the result, of calculating; computation; reckoning, estimate.
2 An expectation based on circumstances.
3 problem solving that involves numbers or quantities
4 the procedure of calculating; determining something by mathematical or logical methods
5 planning something carefully and intentionally
6 The act, process, or result of calculating.
7 An estimate based on probabilities.
8 Careful, often cunning estimation and planning of likely outcomes, especially to advance one's own interests.
9 The act of calculating; the art, practice, or manner of computing by numbers; reckoning; computation: as, to find a result by calculation; the calculation was a difficult one.
10 A series of arithmetical processes leading to a certain result.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide