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quantify

/ˈkwɑːntɪfaɪ/·verb

to express or measure something as a quantity — to put a number on it
Fig. 1 — A double handful of coffee beans goes onto the pan of a dial scale, and for a second they are just a loose brown heap — the sort of amount you'd wave a hand at and call 'about enough'.
01Definition

To quantify is to put a number on something — to turn a vague 'a lot' or 'it helped' into a measured amount you can compare and check. You quantify a loss in pounds, a risk as a percentage, an improvement in points. The word comes from Latin quantus, 'how much', and its whole business is answering that question. The interesting cases are the hard ones: quantifying something that resists it — pain, well-being, the value of a view — usually by finding a proxy or a scale to stand in for the number nobody can read directly.

02In use
  • iInsurers try to quantify a risk before deciding how much a policy should mitigate it.
  • iiIt is easy to say the change helped; it is harder to quantify by how much.
  • iiiEconomists struggle to quantify how strongly the two trends really correlate.
03Collocations
  • quantify the risk
  • quantify the impact
  • hard to quantify
  • quantify the benefit
  • quantify precisely

Family quantification (noun) · quantifiable (adjective) · quantity (noun)

04Relations

=measure, gauge, calculate, count, assess

06TOEFL & IELTS

A strong academic verb for both exams, and a CV favourite through its adjective. 'Quantifiable results' and 'quantify the impact' show the precise, evidence-minded register graders reward, and the common frame 'it is hard to quantify X' is a ready-made hedge for Task 2. Do not confuse it with qualify (to describe conditions or qualities, not amounts) — the look-alike is the real trap. The noun is quantification, and it belongs to numbers, never to grammar's quantifiers (many, few).

07Asked
What does quantify mean?
To quantify is to express something as a quantity — to put a definite number on it instead of a vague word. You quantify a cost in pounds, a risk as a percentage, an effect in points. In the scene above, a loose heap of beans becomes an exact weight on the scale: 'about enough' turns into a figure you can record and compare. The word's whole job is answering 'how much?'
What is the difference between qualify and quantify?
They look and sound alike but split on quantity versus quality. Quantify puts a number on something — how much, how many. Qualify describes or limits it — adding conditions, or naming a quality ('he qualified his praise', 'a qualified success'). You quantify the size of a loss; you qualify a claim by noting its exceptions. The shared quant-/qual- opening is exactly why they get swapped, but numbers belong to quantify.
What does quantifiable mean?
Quantifiable means able to be expressed as a number or amount — a quantifiable cost, a quantifiable benefit. It is prized in CVs and reports because it signals hard evidence: 'quantifiable results' means outcomes you can point to in figures, not vague claims. Its opposite, for things that resist measurement, is unquantifiable or intangible — the value of trust, say, or peace of mind.
Can you quantify something abstract, like happiness or risk?
Often, but only through a stand-in. Since you cannot read happiness off a dial, researchers quantify it with a proxy — a survey score, a scale of 1 to 10, a rate of some measurable behaviour — and treat that as the number. Risk is quantified as a probability. The figure is only as good as the proxy behind it, which is why 'hard to quantify' is an honest thing to admit about feelings and values.
What is the noun form of quantify?
Quantification — 'the quantification of risk', 'this resists quantification'. It names the act of putting things into numbers, and often appears where a writer is noting how difficult that is. The wider family runs back to quantity (an amount) and forward to quantifiable (measurable). Keep it clear of grammar's quantifiers — words like many, much, and few — which are a different topic entirely.
How do you use quantify in a sentence?
Typically with an abstract object you are pinning to a number: 'quantify the impact', 'quantify the loss', 'quantify the benefit'. The most useful academic frame is the hedge 'it is hard to quantify' — 'the social cost is real but hard to quantify precisely'. It pairs naturally with evidence verbs: you gather data in order to quantify an effect, then report the figure.