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 eye mixes quantify and quantity
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Visual trap between quantify and quantity
These two trip readers on the page rather than in the ear: quantify is /ˈkwɒn.tɪˌfaɪ/ while quantity is /ˈkwɒn.tɪ.ti/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - f in “quantify” becomes t in “quantity”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. 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.
Orthographic DNA of quantify vs quantity
Shared letters: ainqtuy. Private to "quantify": f. Private to "quantity": -.
"quantify" · 8 letters · shape CVVCCVCV · "quantity" · 8 letters · shape CVVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "quantify" for "quantity" ever safe?
Which is more common, "quantify" or "quantity"?
What to do next
Eye-level mix-up between "quantify" and "quantity" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "quantify" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "quantity" - compare definitions side by side with the headword page. Word entry
- This pair ranks #376,619 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "quantify" and "quantity" also get mixed up with nearby pairs, the highest-scored neighbour is "qualify vs quantify". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #376,619 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.