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US Naturalization Physical Presence Calculator

Naturalization requires physical presence for at least half the statutory period: 913 days of five years, or 548 days of three years for the spouse of a US citizen. Enter your absences to see where you stand.

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  • Both the 5-year and 3-year routes
  • Flags absences over six months and over a year
  • Continuous residence treated as a separate test
  • Overlapping trips counted once

Time spent outside the country

1to

Meets the requirement with 1825 days

1825 days present of the 913 required, in the window 2021-08-20 to 2026-08-18.

912 days of absence still affordable

These counts have to hold for years, and reconstructing them later rarely convinces anyone. iReside keeps the record as it happens.

Two tests, and passing one is not passing both

Physical presence and continuous residence are assessed separately, and a single long trip can satisfy one while breaking the other. iReside keeps the day-by-day record either way.

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Common questions

How many days do I need?
At least half the statutory period. For most applicants that is 913 days out of five years. For the spouse of a US citizen applying under the three-year rule it is 548 days out of three years.
What is the difference between physical presence and continuous residence?
Physical presence is a day count. Continuous residence asks whether you kept the US as your home without a disruptive break. They are separate requirements and you must satisfy both, which is why you can have plenty of days and still be refused.
Does a long trip break continuous residence?
An absence of more than six months but less than a year raises a rebuttable presumption that continuity broke, which you can try to overcome with evidence. An absence of one year or more breaks it outright, apart from narrow exceptions such as approved N-470 cases.
Which absences count against me?
Every day outside the United States, including partial days at each end of a trip. Short trips add up faster than people expect across a five-year window.
Does time before I got my green card count?
No. The statutory period runs backwards from the date you file Form N-400, and only time as a lawful permanent resident counts toward it.
Is this calculator legal advice?
No. Naturalization eligibility also involves good moral character, residence in a state or district, and other requirements this tool does not assess. Use it for the day count and consult an immigration attorney on anything marginal.

Related tools

Track your days automatically

Stop counting manually. iReside uses GPS to log your state every day in the background. Get alerts before you hit thresholds. Generate audit-ready reports with one click.

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This calculator is for informational purposes only and does not constitute tax, legal, or financial advice. Tax residency rules are complex and vary by jurisdiction. Consult a qualified tax professional for advice specific to your situation.