Which to use
“kg” and “km” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,770
- “kg” frequency rank
- #1,030
- “km” frequency rank
- 4800
- confusion score
Side-by-Side Comparison
| Feature | kg | km |
|---|---|---|
| Definition | Symbole du kilogramme, unité de mesure de masse du Système international (SI), valant 10³ grammes. | Symbole du kilomètre, unité de mesure de longueur du Système international (SI), valant 1000 mètres (10³ mètres). |
Letter map: kg vs km
Shared letters muted; letters that set kg and km apart highlighted. Shared run: 1.
Spelling & dictionary notes on kg vs km
kg and km are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - g in “kg” becomes m in “km”. Our composite confusion score for this pair is 4800, derived from the frequency rank of both members and their visual similarity.
kg is recorded at frequency rank #3,770, classified as asymbol. km is at rank #1,030, tagged as asymbol.
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 4800, this pair ranks #430,659 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of kg vs km
Shared letters: k. Private to "kg": g. Private to "km": m.
"kg" · 2 letters · shape CC · "km" · 2 letters · shape CC
Frequently Asked Questions
Is swapping "kg" for "km" ever safe?
Frequency check: "kg" vs "km" - which ranks higher?
What to do next
You've compared "kg" and "km". Here's where to go from here.
- Full dictionary entry for "kg" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "km" - compare definitions side by side with the headword page. Word entry
- This pair ranks #430,659 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "kg" and "km" also get mixed up with nearby pairs, the highest-scored neighbour is "kg vs ky". Nearby pair
Confusion rank #430,659 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.