How to Use the New Job Start Date Calculator
Once you've accepted a new job, it helps to know exactly when your first day is and when probation wraps up. This calculator takes your start date and probation length and instantly shows how many days are left until your first day, plus the exact date your probation period ends.
Choose 30, 60, or 90 days, or enter a custom length. A 90-day probation period is the most common convention among US employers, though it's an informal practice rather than a legal requirement, and the exact length can vary company to company.
The probation end date is calculated as the day before your start date plus the chosen length, so it stays accurate no matter what day of the month you start. Always confirm the exact terms - including when full benefits or a performance review kick in - with your HR department or offer letter.
Frequently Asked Questions
No. In the US there's no federal law mandating a probation period at all - it's simply a common company policy, with 90 days being the most typical length. Always check your offer letter or employee handbook for the exact terms that apply to you.
Often yes for things like full benefits eligibility or a formal performance review, but this varies a lot by employer. Confirm the exact terms with your HR department rather than assuming a single nationwide rule.