kilovskoWhat's the difference?

Which to use

“kilo” and “ko” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#24,489
“kilo” frequency rank
#10,717
“ko” frequency rank
35206
confusion score

Side-by-Side Comparison

Feature kilo ko
Definition Clipping of kilogram. A local shape to which the ko rule applies; a ko shape.

Where the eye mixes kilo and ko

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
kilo
2 ch
ko

Visual trap between kilo and ko

A purely visual mix-up. kilo (/ˈkiːləʊ/) and ko (/ˈkəʊ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 35206, derived from the frequency rank of both members and their visual similarity.

kilo is recorded at frequency rank #24,489, classified as anoun, pronounced /ˈkiːləʊ/. ko is at rank #10,717, tagged as anoun, pronounced /ˈkəʊ/.

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 35206, this pair ranks #313,988 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of kilo vs ko

Shared letters: ko. Private to "kilo": il. Private to "ko": -.

"kilo" · 4 letters · shape CVCV  ·  "ko" · 2 letters · shape CV

Known mistypes of this pair

  • kiloiklo · killo · kiol · kkilo · klio

Frequently Asked Questions

Can "kilo" and "ko" be used interchangeably?
No. They are said differently (/ˈkiːləʊ/ versus /ˈkəʊ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "kilo" or "ko" show up more?
"ko" is the more common of the two: it sits at frequency rank #10,717 in our English list, against #24,489 for "kilo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "kilo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ko" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #313,988 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "kilo" and "ko" also get mixed up with nearby pairs, the highest-scored neighbour is "kilo vs kno". 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 #313,988 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list