Citizenship tools and calculators

Eligibility Calculator

When can you apply? Estimate your eligibility date from your green card date.

90-Day Filing Calculator

Estimate a residence-based filing date under the 90-day early-filing rule.

Mock Interview

Rehearse the entire USCIS interview with an officer who questions every answer.

Civics Practice Test

20 questions, scored just like the real 2025 civics test.

All 128 Civics Questions

Study every official question and answer at your own pace.

Current Civics Answers

The President, Vice President, Speaker, and Chief Justice answers, kept up to date.

Continuous Residence Calculator

Add your trips and see whether any of them break your continuous residence.

Document Checklist Generator

Answer a few questions and get a printable list of what to bring to your interview.

Fee and Fee-Waiver Checker

Review current fees and possible reduced-fee or fee-waiver request categories.

Will I Lose My Citizenship?

Find your country and see whether you can keep your original citizenship after you naturalize.