Passport Validity Checker (3-Month and 6-Month Rule for Travel)
Whether your passport has enough validity left for a trip, given its expiry date, the day you leave the destination and the validity the country requires.
Results
What this tool does
Many countries refuse entry if your passport expires too soon after the trip, not just before it. The Schengen area asks for a passport valid at least three months beyond the day you plan to leave (and issued within the last ten years); many other countries ask for six months from entry or from departure. The count here is from the day you leave, in whole months, and shows how many months you are short. Rules vary by country and nationality and change without notice, so check the destination's official entry requirements, and renew in time: processing can take weeks.
Formula
days left = expiry − departure · whole months left = 12 × Δyears + Δmonths − 1 if the expiry day comes before the departure day
Variables
| Symbol | Meaning | Unit |
|---|---|---|
ey | Passport expiry — year | — |
em | Passport expiry — month (1–12) | — |
ed | Passport expiry — day of the month | — |
ly | Day you leave the country — year | — |
lm | Day you leave the country — month (1–12) | — |
ld | Day you leave the country — day of the month | — |
rq | Validity the country requires after you leave | months |
PD | Days of validity left on the day you leave | d |
PM | Whole months of validity left | — |
PK | Does the passport meet the requirement? | — |
PS | Months short of the requirement | — |
Worked example
- Passport expiry — year2027
- Passport expiry — month (1–12)6
- Passport expiry — day of the month30
- Day you leave the country — year2026
- Day you leave the country — month (1–12)12
- Day you leave the country — day of the month20
- Validity the country requires after you leave3 months
- Days of validity left on the day you leave192 d
- Whole months of validity left6
- Does the passport meet the requirement?Yes
- Months short of the requirement0
Limitations
- For work that must comply with a standard or be signed off, check the result against the applicable code and have it reviewed by a qualified engineer.
- Dates are handled in the proleptic Gregorian calendar, which is the one computers use. For dates before the Gregorian reform of 1582 this differs from what was written at the time.