kmvskunWhich spelling fits?

Quick tell: km is a abbrev, kun is a preposition, so they fill different roles in a sentence.

Which to use

“km” is an abbrev and “kun” is a preposition - they look or sound alike but fill different roles in a sentence.

#764
“km” frequency rank
#35,882
“kun” frequency rank
36646
confusion score

Side-by-Side Comparison

Feature km kun
Definition Einheitssymbol für Kilometer mit

Letter map: km vs kun

Shared letters muted; letters that set km and kun apart highlighted. Shared run: 1.

2 ch
km
3 ch
kun

Grammar separator: km vs kun

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: km is anabbrev and kunapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 36646, derived from the frequency rank of both members and their visual similarity.

km is recorded at frequency rank #764, classified as anabbrev. kun is at rank #35,882, tagged as aprep, pronounced [kun].

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 36646, this pair ranks #1,610,236 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of km vs kun

Shared letters: k. Private to "km": m. Private to "kun": nu.

"km" · 2 letters · shape CC  ·  "kun" · 3 letters · shape CVC

Frequently Asked Questions

Can "km" and "kun" be used interchangeably?
No - they are not even the same part of speech. "km" is an abbrev and "kun" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "km" or "kun"?
"km" is the more common of the two: it sits at frequency rank #764 in our German list, against #35,882 for "kun". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "km" and "kun". Here's where to go from here.

  • Full dictionary entry for "km" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "kun" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,610,236 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "km" and "kun" also get mixed up with nearby pairs, the highest-scored neighbour is "Koi vs kun". Nearby pair

Confusion rank #1,610,236 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list