calculation

calculation — noun

1. working with numbers through addition, subtraction, multiplication, or division

1.nounB2
Definition

working with numbers through addition, subtraction, multiplication, or division to find a total or amount

Example

The engineer double-checked every calculation before approving the bridge design.

collocation: double-check a calculation

A quick calculation showed that they would need 24 chairs for the wedding.

adjective + calculation: quick calculation

Common collocations
  • do a calculation
  • make a calculation
  • quick calculation
  • accurate calculation
  • double-check a calculation
  • calculation of
Synonyms
  • computation

    more formal and technical, used in scientific or academic contexts

  • arithmetic

    refers to the branch of math itself, not a single act of finding an answer

  • sum

    simpler; usually refers to adding numbers, not multi-step processes

Usage Note

Can be countable (a specific arithmetic operation or its result) or uncountable (the process in general). 'do/make a calculation' is the most common verb pairing.

Common Mistakes

The calculation of the budget last year.
The calculation of the budget took all week.
'calculation' needs a verb to function as a noun in a complete sentence.
I done a calculation on the bill.
I did a calculation on the bill.
The past form of 'do' with 'calculation' is 'did', not 'done'.

2. a judgement about what will probably happen based on the available information a

2.nounB2
Definition

a judgement about what will probably happen based on the available information and experience, not on exact numbers

Example

My calculation was that the train would arrive within ten minutes of the scheduled time.

uncountable: my calculation [that-clause]

The coach's calculation about the other team's tactics proved correct.

Common collocations
  • by any calculation
  • calculation that
  • calculation of
  • on someone's calculation
Synonyms
  • assessment

    more formal; emphasizes careful evaluation rather than numerical logic

  • estimate

    focuses on approximate value rather than predicted outcome; more numerical

  • judgement

    broader; less analytical, more intuitive than calculation

Usage Note

Distinguish from sense 1 (NUMBERS): sense 2 involves judgement and prediction, not arithmetic. Can be used with 'that'-clauses to state what the judgement was.

Common Mistakes

My calculation says it might rain.
My calculation is that it might rain.
Use 'is that' rather than 'says' when stating the content of a calculated judgement.

3. careful, cold-hearted planning intended only to benefit oneself, often at the ex

3.nounC1
Definition

careful, cold-hearted planning intended only to benefit oneself, often at the expense of honesty or other people

Example

There was no warmth in his offer, only cold calculation about what he could gain.

collocation: cold calculation

Her decision to volunteer seemed kind, but everyone suspected pure calculation behind it.

Common collocations
  • cold calculation
  • political calculation
  • bare calculation
  • pure calculation
Synonyms
  • scheming

    more active and dishonest; suggests secret plots rather than detached calculation

  • manipulation

    focuses on controlling people, not just planning for personal gain

Antonyms

Usage Note

Uncountable only. Always carries a negative or critical tone. Frequently paired with adjectives like 'cold', 'bare', 'pure', or 'political'. Not used for neutral or positive planning.

Common Mistakes

Their calculation helped them succeed nicely.
Cold calculation guided their business decisions.
This sense is negative; avoid neutral or approving context.

Word family

Synonym discussion

Sense: noun/1

While all four words involve working with numbers, they differ in scope and register. 'Computation' is the most formal and technical — it suggests multi-step processing, often by computer ('the computation of satellite trajectories'). 'Arithmetic' names the branch of mathematics itself, not a single act; saying 'I did some arithmetic' feels less specific than 'I did a calculation'. 'Sum' is by far the simplest of the group and usually refers to adding two or more numbers together ('check the sum on the receipt'). 'Reckoning' has an old-fashioned or literary flavour and often implies a final total after counting up ('the day of reckoning'). In everyday use, 'calculation' is the broadest and most neutral choice for any number-based problem-solving.

computation ↗arithmetic ↗sum ↗reckoning

Common collocations

Nouns

Adverbs

Phrases

  • do a calculation
  • make a calculation
  • by someone's calculation
  • a matter of calculation

Prepositions

Etymology

LatinFrenchEnglish

From Latin 'calculatio', meaning 'a reckoning, a computation'. The root is 'calculus' — a small stone used for counting on an abacus. The sense of 'self-interested planning' developed in the 1800s, extending the idea of 'careful reckoning' from numbers to personal motives.