KLOORAN-400 Naturalization Date Calculator
Find the date you can file for US citizenship (N-400) based on your green card date.
How to use N-400 Naturalization Date Calculator
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
Features
- Instant results
- Free, no signup
- Runs in your browser, nothing is uploaded
- Works on phone and desktop
How it works
Add 5 years (or 3) to the date you became a permanent resident, then subtract 90 days for the earliest filing date.
Worked example
A green card dated June 15, 2021 completes 5 years on June 15, 2026, so you could file from March 17, 2026.
Good to know
These are planning estimates, not tax or legal advice. Rules and limits change, so confirm at irs.gov, uscis.gov, ssa.gov or with a professional.
Frequently asked questions
When can I file N-400?
You can file up to 90 days before you complete 5 years as a permanent resident (3 years if married to and living with a US citizen for 3 years).
Does travel matter?
Long trips can break continuous residence, and you need enough days physically in the US. Check uscis.gov.
Is the N-400 Naturalization Date Calculator free?
Yes. It is free, needs no signup and works on any device.