I-94 Stay Limit Calculator accuracy and testing

Formula source

• Estimated last day = entry date + authorized-stay days - 1 if entry date counts as day one; otherwise entry date + authorized-stay days. Reminder date = estimated last day - reminder lead days.

Test cases

Known limitations

• This calculator does not determine admission class, D/S notation, extensions, status changes, unlawful presence, grace periods, or case-specific immigration consequences.

Assumptions

• This is a planning estimate only, not legal advice, not an official government eligibility decision, and not an official deadline determination.
• Authorized-stay days and counting method are user-entered assumptions.
• The calculator does not retrieve official I-94 records or current immigration rules.
• Dates and thresholds are processed locally in your browser and are not stored by Calwarden.

Unit handling

• Entry Date accepts calendar dates.
• Authorized-Stay Days accepts values in days.
• Count Entry Date as Day One accepts Yes/No values.
• Reminder Lead Time accepts values in days.
• Reference Date accepts calendar dates.
• Days Remaining is displayed in days.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.
• Input precision follows configured step values where provided.

Version history

Change log