Home in vs. hone in: which phrase is correct?

The short answer

Home in on is the standard phrase, built from the verb home, meaning to move steadily toward a target the way a homing pigeon returns to its loft. Hone in on is a very common variant that grew from mishearing home as hone, and most style guides still treat it as an error, though it now appears often enough in casual speech that some dictionaries note it as a variant.

• Standard: home in on
• Common error: hone in on
• Safer choice in formal writing: home in on

What home in and hone mean

Home in on means to move closer and closer to something, whether a physical place, a topic, or an answer. The detective homed in on the one detail that did not match the suspect's story. A missile can also home in on a heat signature, which is the original, literal use of the phrase, later extended to describe focusing on ideas and answers as well as places. Editors, teachers, and writing guides consistently list home in on as the preferred form.

Hone, on its own, means to sharpen or perfect something through steady practice, as in hone a skill or hone a knife. Hone in is not a standard phrase; the verb hone simply does not take the preposition in the way home does. When you mean sharpen, use hone alone, without in, as in she honed her argument before the debate.

Why hone in caught on

Home and hone sound almost identical in fast speech, and both suggest a kind of narrowing focus, which made the swap easy to miss. Once hone in on started appearing in speeches and news broadcasts, listeners picked it up as if it were the original phrase, and it spread from there. The error is now widespread enough that some dictionaries list it as a variant, but that does not make it the preferred form in careful, edited writing, where home in on remains the safer choice.

Home in vs. hone in on in a sentence

The committee wants to home in on the budget items that changed the most (not: the committee wants to hone in on the budget items). She spent the summer honing her pitch until it was five minutes shorter (not: she spent the summer homing her pitch). Investigators are honing in on a suspect is common in casual talk, but home in on is the safer, standard choice for writing. Keep the two verbs separate and neither sentence will read as a mistake.

Remember it

Picture a homing pigeon flying straight toward its home; that image is exactly what home in on describes, narrowing in on one target. Save hone for sharpening something over time, like honing a blade or a skill through practice. If you can replace the phrase with zero in on and it still makes sense, home in on is the word you want, and if the sentence is about improving a skill, reach for hone by itself instead.