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Passport validity calculator
The date on your passport's cover is not the date it stops working. Many countries deny entry — and airlines deny boarding — when a passport expires within six months of the trip, which moves the real deadline half a year earlier than the cover says. Enter your expiration date and this page computes your effective travel expiry and a sane renew-by date.
The timeline, computed
Worked example — a passport that expires January 20, 2028 has this timeline:
Renew by now (recommended)
in 237 days
Tuesday, April 20, 2027
Routine processing takes weeks plus mailing both ways; renewing ~9 months out keeps every trip safe.
Effective travel expiry (6-month rule)
in 328 days
Tuesday, July 20, 2027
Many countries deny entry if your passport expires within 6 months of your trip — for international travel, this is the real expiration.
Passport expires
in 512 days
Thursday, January 20, 2028
The date on the cover — months later than the date that actually grounds you.
Knowing the dates is the easy part.
Sureday guards them: push, email — and if you don't confirm, texts, phone calls, and a person you trust. One click turns this timeline into a guarded reminder.
The six-month rule, honestly stated
The six-month validity rule is destination-country policy, not U.S. law — and it is not universal. Many countries require six months of validity beyond your entry or departure date; some require three; some accept a passport valid for the length of the stay. The practical consequence is the same: for international travel, treat the six-month mark as your working expiration, and check the State Department's country information page for each specific destination before booking.
U.S. adult passports (issued at 16 or older) are valid for ten years. Children's passports run five years and cannot be renewed at all — every child application is a new in-person appointment with both parents. That asymmetry catches families constantly: the adult passports are fine, and the child's quietly expired.
Renewing without drama
Routine processing takes weeks, plus mailing time in both directions — which is why renewing around nine months before expiration keeps every trip safe without ever thinking about expedited service. Adults 25 and older whose 10-year passport is expiring within a year (or expired less than five years ago) can now renew online through the State Department's portal, provided nothing changed (name, sex marker) and no international travel is imminent; everyone else renews by mail or, for first-timers and children, in person.
Questions people actually ask
Is the six-month rule a U.S. law?
No — it is the entry policy of the destination country, enforced at check-in and at the border. Requirements differ by country (six months, three months, or validity for the stay). Check the State Department's country information page for your destination; when in doubt, assume six months.
Can I renew my passport online?
Adults 25+ renewing a 10-year passport that is expiring within one year (or expired less than five years ago) can use online renewal, for routine service only, with no name or sex-marker change and no travel in the next several weeks. Outside those conditions, renew by mail with Form DS-82 — or in person if you're not eligible for renewal at all.
How early should I renew?
About nine months before the printed expiration. That clears the six-month rule for any trip, absorbs routine processing plus mail time, and never requires paying for expedited service.
What about my child's passport?
Passports issued under age 16 are valid five years and cannot be renewed — each application is a new in-person appointment (Form DS-11) with both parents present or a notarized consent. Plan those around school and work calendars; the appointment is the bottleneck.
Is this calculator legal or travel advice?
No — it does date arithmetic on the expiration you enter and states the general rules with links to the official sources. Destination requirements vary and change; the State Department's country pages are the authority.
Sources
- U.S. State Department — Renew your passport
- U.S. State Department — Online passport renewal
- USA.gov — Child passports
Written and maintained by Sureday. Every rule on this page was verified against the sources above on August 26, 2026; when the rules change, this page changes. Not legal advice.
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