Free Probation End Date Calculator

Work out when a probation period ends — free, no sign-up, nothing leaves your browser.

This is a straightforward date calculation, not a substitute for checking your contract — some employers count probation from the offer date rather than the first working day, and extensions or pauses (e.g. for extended leave) aren't reflected here.
probation end date

What a probation period is actually for

A probation period exists to let both sides properly evaluate fit before fully committing — it's genuinely a two-way arrangement, not just a trial for the employee. During probation, some contractual terms are often reduced, such as a shorter notice period on either side, making it easier for either party to part ways if the role isn't working out than it would be for an established employee. This is also usually the period during which formal performance check-ins happen most frequently, since the point is to surface problems early enough to address them, rather than letting a mismatch continue for months before anyone raises it.

Frequently asked questions

What's the most common probation length in the UK?

Three or six months are the most typical, though this varies by employer, role seniority, and industry — check your offer letter or contract for the exact length that applies to you.

Can probation be extended?

Yes, many contracts allow this — this calculator only works out the originally scheduled end date, not any extension your employer may apply.

Does notice work differently during probation?

Often, yes — many contracts specify a shorter notice period during probation than applies afterward. Check the exact wording in your contract, since this varies by employer.

Is my data sent anywhere?

No. Everything is calculated locally in your browser — nothing you enter is sent to a server.