"How long will you stay in the US?" — how to answer
Direct answer: Give the number that matches the "Intended Length of Stay" on your DS-160 and justify it with the itinerary in one sentence; the admission length itself is decided by CBP at the port of entry, not promised at the interview.
How the question is asked
The U.S. Department of State publishes no official interview script; officers question freely around what they need to establish. These are the most common phrasings of this probe, collected from public interview accounts:
- How long do you plan to stay in the US?
- How long will you be in the United States?
- When will you come back? (cross-checking your return)
- Chinese-language equivalent at China posts: 你打算待多久?
What the officer is evaluating
Two things are being checked. The first is plain consistency: the number in your mouth must be the same answer as the DS-160's "Intended Length of Stay" and your arrival/departure dates — a form that says 10 days and an answer of "two or three months" is the most common, and most avoidable, mismatch. The second is proportionality: the stay has to fit the trip you describe. "Five months, just hanging out in New York" pulls follow-ups straight into funding and home ties.
One misconception is worth defusing early: the number you give at the interview is not your admission period. The visa decides whether you may travel; the CBP officer at the port of entry decides how long that visit may last (commonly up to six months for B1/B2), recorded on your I-94. The right posture for this question is an honest plan, not a padded one.
Answer framework
- 1. Number first, dates second
"About 12 days — leaving around September 10, back around the 22nd." The number matches the DS-160; if you cannot recall exact dates, say "as filled in my DS-160" rather than inventing new ones at the window. - 2. Justify the number in one sentence
Make the itinerary explain the duration: "12 days — five in Los Angeles, three in Las Vegas, two in transit." Itinerary and duration corroborate each other, and follow-ups thin out. - 3. Name the pull back home
If asked "why that length", the credible answer is usually domestic: your annual leave is that long, your return-to-work date, a family arrangement. A concrete reason to return makes the number believable. - 4. Say so when it is undecided
Do not invent precision for open plans. "About ten days; the return ticket isn't booked yet — the dates in my DS-160 are the reference" beats a fabricated date that collapses under one follow-up.
Common mistakes
- Confusing visa validity with stay length: "the visa is ten years, so I can stay ten years" — validity and admission period are different things, and this misconception is an instant red flag.
- Padding the number: planning two weeks but saying two months "for flexibility" invites a chain of funding and ties questions; report the honest plan.
- Quoting a number that fights the DS-160: the form's Intended Length of Stay says 10 days, you say three months — checkable on the spot.
- Inventing dates: improvising departure or return dates you cannot back with the form or a ticket just creates the next inconsistency.
- Volunteering extension plans: "maybe I'll extend if I like it" — B1/B2 extension is a separate application, and raising it unprompted adds immigrant-intent doubt.
Sample answerFICTIONAL SAMPLE
Sample (fictional person, shown for structure — not a model answer): "About 12 days. I plan to fly September 10 and return on the 22nd — five days in Los Angeles, three in Las Vegas, the rest in transit. The dates match my DS-160."
That sentence packs duration, dates, itinerary density, and a pointer back to the form. If the officer asks "why only 12 days", the next sentence should be a concrete home-side arrangement (annual-leave quota, return-to-work date) — not another tour of the US itinerary.
Consistency with your DS-160
Open the DS-160 and check three fields: "Intended Length of Stay" (days), "Date of Arrival/Departure", and "Locations You Will Visit" — your spoken answer must cover the same facts.
If tickets are bought, reconcile them with the form; when a ticket and the form disagree, the burden of explanation lands on you.
For companions sharing one itinerary (parents traveling together, for example), both people must give the same days and cities — officers may ask each and compare.
Related DS-160 fields
How to practice this question
The fastest way to make this answer automatic is to have someone drill you at window pacing. qianyu (签屿/VisaIsle) is an AI mock visa interviewer for the US B1/B2 visitor visa that reads your DS-160, cross-checks it against your spoken answers and supporting documents to catch every inconsistency, and drills you with realistic 214(b)-style consular questioning at three difficulty levels — with pay-as-you-go credit packs from ¥29.9 for Chinese applicants. New users get 1 free training credit on sign-up.
FAQ
Is the number I say the length I'll be admitted for?
No. What you state at the interview is your plan; the CBP officer at the port of entry decides the admission period (commonly up to six months for B1/B2), recorded on your I-94. Visa validity, admission period, and I-94 are three different things — at the interview, state the plan accurately.
My itinerary is still open — what do I say?
Answer from the plan you entered on the DS-160 and state the open fact plainly: "about ten days, return ticket not booked yet, the form dates are the reference." That is far more credible than a precise invented date; the form is your official statement to the consulate.
Is a shorter stay easier to pass with?
No. The assessment is fit — duration versus purpose, itinerary, and funding — not absolute length; one month for a family visit and three days for business are both normal. Shrinking a real one-month plan to "one week" to look safer only manufactures inconsistency when documents or follow-ups disagree.
Updated 2026-08-16