oft chance (off chance)

Use its (no apostrophe) for possession; use it's (with an apostrophe) only for the contraction of it is or it has. A quick expansion test - replace the word with "it is" or "it has" - usually gives the right answer instantly.

Quick answer

its = possessive (belongs to it). it's = contraction (it is / it has). If "it is/it has" fits, use it's; otherwise use its.

its = possession: The phone lost its signal.
it's = contraction: It's been a long day. = It has been a long day.
Fast test: expand the phrase; read it aloud.

Core explanation: the rule in one sentence

Possessive pronouns (its, his, her, their) do not take an apostrophe; the apostrophe marks missing letters in contractions (it's = it is / it has).

Possessive → its (no apostrophe): the robot and its arm
Contraction → it's (with apostrophe): it's ready = it is ready

Grammar details: edge cases to watch for

It's covers only it is and it has. It doesn't stand for it would or it will - use it'll or write the words out. Possessive its follows the same pattern as his and hers: no apostrophe.

Use it's only for "it is" or "it has."
In formal writing, prefer "it is" or "it has" instead of the contraction.
Always use its for ownership, even when the owner is a thing (company, team, device).

Real usage: tone and common contexts

Contractions are fine in conversation, chat, and casual email. For formal reports or academic work, spell out "it is" or "it has." The possessive its applies in every tone.

Conversational: it's is natural and friendly.
Formal: use it is / it has for clarity.
Practical tip: when a noun like company, device, or team appears before the word, possession is usually intended - use its.

Examples: 12 copy-paste wrong/right pairs

Copy these templates when you need a quick fix. Each Incorrect line shows a common error; each Correct line gives a safe replacement.

Wrong: The cat cleaned it's paws after dinner.
Right: The cat cleaned its paws after dinner.
Wrong: Its unclear how the data was sampled.
Right: It's unclear how the data was sampled.
Wrong: The website updated it's banner this morning.
Right: The website updated its banner this morning.
Wrong: Its been three weeks since the rollout.
Right: It's been three weeks since the rollout.
Wrong: The device lost it's signal indoors.
Right: The device lost its signal indoors.
Wrong: I don't know if it's decision is final.
Right: I don't know if its decision is final.
Wrong: Its surprising how quickly the file downloaded.
Right: It's surprising how quickly the file downloaded.
Wrong: The committee changed it's schedule.
Right: The committee changed its schedule.
Wrong: It's already been approved by the team.
Right: It has already been approved by the team.
Wrong: It's role in the experiment was small.
Right: Its role in the experiment was small.
Wrong: The app lost it's cache after the update.
Right: The app lost its cache after the update.
Wrong: Its unlikely we'll finish by Friday.
Right: It's unlikely we'll finish by Friday.

Try your own sentence

Test the full sentence, not just the single word. Replace the suspect word with "it is" or "it has" and read the result; context usually makes the correct form clear.

Work, school, and casual examples (3 each)

Short, realistic pairs for each context. Each pair shows the typical error and a ready replacement.

Work (email) Wrong: It's roadmap lists three priorities for Q2.
Right: Its roadmap lists three priorities for Q2.
Work (release note) Wrong: It's been updated to version 2.1.
Right: It has been updated to version 2.1.
Work (status) Wrong: The server lost it's connection at 04:00.
Right: The server lost its connection at 04:00.
School (essay) Wrong: Its difficult to draw firm conclusions.
Right: It's difficult to draw firm conclusions.
School (lab report) Wrong: The specimen and it's container were labeled.
Right: The specimen and its container were labeled.
School (feedback) Wrong: Its clear the student understood the method.
Right: It's clear the student understood the method.
Casual (text) Wrong: Its gonna be cold tonight.
Right: It's gonna be cold tonight.
Casual (social) Wrong: The dog lost it's toy at the park.
Right: The dog lost its toy at the park.
Casual (chat) Wrong: Its nice to catch up!
Right: It's nice to catch up!

Fix your sentence: 7 rewrite patterns to paste now

Use these templates when you spot an its/it's problem. Each pattern shows a common mistake and one or more safe rewrites.

Replace contraction with full form: Original: Its been difficult to track progress. Fixes: It's been difficult to track progress. / It has been difficult to track progress.
Change contraction to possessive: Original: The committee and it's chair agreed. Fix: The committee and its chair agreed.
Formal passive: Original: Its expected to arrive tomorrow. Fixes: It's expected to arrive tomorrow. / It is expected to arrive tomorrow.
Possessive cleanup: Original: The system lost it's cache after reboot. Fix: The system lost its cache after reboot.
Make intent explicit: Original: Its clear we need more data. Fixes: It's clear we need more data. / It is clear that we need more data.
Fix misplaced contraction: Original: It's final decision will follow the review. Fix: Its final decision will follow the review.
Resolve ambiguity: Original: The app and it's users were notified. Fix: The app and its users were notified.

Memory trick, hyphenation, and spacing checks

Use the expansion test every time: if "it is" or "it has" fits, use it's; if not, use its. Think of its like his or her - they never take an apostrophe.

Hyphenation and spacing: an apostrophe is not a hyphen and must not have spaces around it. Correct: it's or its. Incorrect: it ' s, it- ' s, it 's.

Mnemonic: its = belongs to it; it's = it is / it has.
Typing tip: don't add spaces around apostrophes and keep your editor's smart-replace in check.
Editor tip: if auto-correct keeps switching correct forms, add common phrases to your user dictionary.

Similar mistakes to watch for

Mixing up its and it's often goes hand in hand with other homophone errors. Keep these quick corrections handy.

Their / they're / there Wrong: They're car is parked over there.
Correct: Their car is parked over there. (their = possession)
Your / you're Wrong: Your amazing at this.
Correct: You're amazing at this. (you're = you are)
Whose / who's Wrong: Whos jacket is this?
Correct: Whose jacket is this? (whose = possession)
Off chance Wrong: I have an oft chance of winning.
Correct: I have an off chance of winning. (off chance = unlikely possibility)
Plural possessive Wrong: The teams' schedule changed (when referring to one team).
Correct: The team's schedule changed. (use team's for one team; teams' for multiple teams)

FAQ

Is its or it's correct after a noun?

If you mean possession after a noun, use its: "The team and its captain arrived." If you mean "it is" or "it has," restructure so the contraction makes sense: "It's clear that we need more data."

Can I use it's in a formal paper?

Avoid contractions in formal writing. Write "it is" or "it has" instead of "it's" to keep a formal tone and reduce ambiguity.

What's a fast way to check which to use?

Replace the word with "it is" or "it has." If the sentence still makes sense, use it's. If not, use its. Reading the sentence aloud helps.

Why doesn't its have an apostrophe when other possessives do?

Its is a possessive pronoun like his, hers, and ours; these pronouns do not take apostrophes. Apostrophes mark contractions or noun possessives (the dog's leash).

My editor keeps auto-fixing its to it's - how do I stop that?

Turn off automatic grammar replacements or add common correct phrases to your editor's dictionary. Review suggested changes and use the expansion test rather than accepting replacements blindly.

Still unsure about a sentence?

Paste the sentence into a checker that explains suggestions before applying them, or use the expansion test and the rewrite patterns above to fix sentences quickly and consistently.