is vs it's, What's the Difference?

Which to use

“is” is a verb and “it's” is a contraction - they look or sound alike but fill different roles in a sentence.

#8
“is” frequency rank: #55
“it's” frequency rank: 63
confusion score

Side-by-Side Comparison

Feature	is	it's
Definition	third-person singular simple present indicative of be	Contraction of it + is.

Where the eye mixes is and it's

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

2 ch

4 ch

it's

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: is is /ɪz/ while it's is /ɪts/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 63, derived from the frequency rank of both members and their visual similarity.

is is recorded at frequency rank #8, classified as averb, pronounced /ɪz/. it's is at rank #55, tagged as acontraction, pronounced /ɪts/.

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 63, this pair ranks #529,943 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of is vs it's

Shared letters: is. Private to "is": -. Private to "it's": t.

"is" · 2 letters · shape VC · "it's" · 3 letters · shape VCC

Frequently Asked Questions

Can "is" and "it's" be used interchangeably?

No - they are not even the same part of speech. "is" is a verb and "it's" a contraction, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "is" or "it's"?

"is" is the more common of the two: it sits at frequency rank #8 in our English list, against #55 for "it's". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "is" and "it's". Here's where to go from here.

Full dictionary entry for "is" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "it's" - compare definitions side by side with the headword page. Word entry
This pair ranks #529,943 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"is" and "it's" also get mixed up with nearby pairs, the highest-scored neighbour is "it's vs ith". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.