Which to use
“quantify” is a verb and “quantity” is a noun - they look or sound alike but fill different roles in a sentence.
- #21,322
- “quantify” frequency rank
- #6,401
- “quantity” frequency rank
- 27723
- confusion score
Side-by-Side Comparison
| Feature | quantify | quantity |
|---|---|---|
| Definition | To assign a quantity to. | A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items. |
Where the spellings diverge
Shared letters are muted; the letters that actually set quantify and quantity apart are highlighted. They share 7 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
quantify and quantity form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by a single letter - f in “quantify” becomes t in “quantity” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 27723, derived from the frequency rank of both members and their visual similarity.
quantify is recorded at frequency rank #21,322, classified as averb, pronounced /ˈkwɒn.tɪˌfaɪ/. quantity is at rank #6,401, tagged as anoun, pronounced /ˈkwɒn.tɪ.ti/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 27723, this pair ranks #376,619 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "quantify" and "quantity" be used interchangeably?
Remembering quantify vs quantity
The fastest way to pick the right one every time.
- Check the role first: if you need a verb, it's “quantify”; for a noun, it's “quantity”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “quantify” entry
- Browse more pairs most likely to be confused. Most confusable