N-400 Physical Presence & Travel Days Calculator
Count N-400 physical-presence days from an unlimited travel ledger, flag long absences and show a 90-day early-filing candidate while keeping continuous residence separate. Inputs stay in your browser.
This check compares the complete N-400 physical-presence total with the selected USCIS threshold. It does not convert that result into overall naturalization eligibility. Review note: Complete the N-400 travel record before using the day total.
Context matters.
- USCIS treats the day of departure and the day of return as days physically present in the United States.
- An absence longer than six months can disrupt continuous residence; an absence of one year or more is a separate major issue unless a specific exception applies.
- The three-year spouse route has its own marital-union and citizenship conditions. Selecting it here does not establish those facts.
- The early-filing date is only a candidate based on the entered Permanent Resident Since date. USCIS will reject filing more than 90 days early, and every other requirement still applies.
Sources & scope
The calculation guide and this source trail show what the result means, where the rule came from and when it was last reviewed. This is source-and-calculation QA, not a claim of medical, legal, tax or other professional review; time-sensitive decisions still belong with the linked authority.
A visible path from input to answer.
Count N-400 physical-presence days from an unlimited travel ledger, flag long absences and show a 90-day early-filing candidate while keeping continuous residence separate. The page keeps the calculation scope and its limits beside the result so the output can be checked, copied or revisited.
- Read the record. The calculator uses Planned N-400 filing date, Naturalization basis, How should physical presence be entered?, Trips outside the United States and Physical-presence days from the complete travel record and 6 additional fields supplied in the form.
- Apply the scope. It applies the United States naturalization physical-presence screen — USCIS route, complete N-400 travel record and separate continuous-residence requirements control reference and the explicit date, unit and counting conventions shown in the result.
- Expose the checkpoints. Intermediate rows, warnings and timeline events stay visible; the emphasized row identifies the primary checkpoint when one exists.
This check compares the complete N-400 physical-presence total with the selected USCIS threshold. It does not convert that result into overall naturalization eligibility. Review note: Complete the N-400 travel record before using the day total.
- Statutory lookbackAug 30, 2021 – Aug 30, 2026
- Calculated physical-presence total1,827 days
- Overall N-400 eligibilityNot determined
Calculation purpose: Count N-400 physical-presence days from an unlimited travel ledger, flag long absences and show a 90-day early-filing candidate while keeping continuous residence separate. This is a high-sensitivity reference output; the linked authority or qualified professional controls the final decision.
Calendar inputs use plain year-month-day semantics. Leap days, month ends, date-pair order and unsupported dates are checked before the result is shown.
Rule set 2.0.0 · Last reviewed 2026-08-28 · Next review due 2027-02-28. The source panel below contains the linked evidence.
What to know before using the result.
Are departure and return days U.S. physical-presence days?
Yes. USCIS N-400 instructions count the day you leave and the day you return as days present in the United States.
Can I paste all of my trips instead of totaling the days myself?
Yes. Enter one departure/return pair per line. CalcSpan counts complete days outside the United States, deduplicates overlapping entries and exports the audit as CSV.
Is 913 days enough to prove naturalization eligibility?
No. It is the physical-presence threshold for the general five-year route. Continuous residence, district residence, good moral character, English/civics and other requirements remain separate.
Does 90-day early filing lower the physical-presence requirement?
No. Early filing can affect when an application is submitted, but the required physical-presence days must still be met at filing.