H1vshpWhich spelling fits?

Quick tell: H1 is a noun, hp is a symbol, so they fill different roles in a sentence.

Which to use

“H1” is a noun and “hp” is a symbol - they look or sound alike but fill different roles in a sentence.

#41,322
“H1” frequency rank
#9,671
“hp” frequency rank
50993
confusion score

Side-by-Side Comparison

Feature H1 hp
Definition Échelle correspondant au rapport 1:64. Symbole du horsepower, le cheval-vapeur anglo-saxon, dont les diverses définitions vont de 75 m kgf/s à 746 W.

Letter map: H1 vs hp

Shared letters muted; letters that set H1 and hp apart highlighted. Shared run: 1.

2 ch
H1
2 ch
hp

Grammar separator: H1 vs hp

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: H1 is anoun and hpasymbol. On the page they differ by a single letter - 1 in “H1” becomes p in “hp”. Our composite confusion score for this pair is 50993, derived from the frequency rank of both members and their visual similarity.

H1 is recorded at frequency rank #41,322, classified as anoun, pronounced \aʃ.œ̃\. hp is at rank #9,671, 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 50993, this pair ranks #158,378 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of H1 vs hp

Shared letters: h. Private to "H1": -. Private to "hp": p.

"H1" · 1 letters · shape C  ·  "hp" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "H1" for "hp" ever safe?
No - they are not even the same part of speech. "H1" is a noun and "hp" a symbol, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "H1" vs "hp" - which ranks higher?
"hp" is the more common of the two: it sits at frequency rank #9,671 in our French list, against #41,322 for "H1". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "H1" vs "hp" is on the table, pick a follow-up below.

  • Full dictionary entry for "H1" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "hp" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #158,378 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "H1" and "hp" also get mixed up with nearby pairs, the highest-scored neighbour is "H1 vs hae". Nearby pair

Confusion rank #158,378 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list