Check whether a document will still be valid through a target date plus any extra validity buffer the receiving authority requires. The useful output is not just the number: it is the number together with the assumptions and eligibility checks that can change what you should do next.
What this calculator uses
The inputs on this page are Document expiry date, Target submission / travel date, Extra validity required after target date (days). The calculation uses the values you enter for Document expiry date, Target submission / travel date, Extra validity required after target date (days) and returns the planning output described by the tool.
How to read the result
Use the actual rule for the document type. Passport, language-test, bank-statement and police-certificate validity can follow different clocks.
What the number does not prove
A checklist helps organize evidence but does not prove a document will be accepted. Check format, validity, translation, legalisation and submission rules with the receiving authority.
Best next step
Use the output as a preparation list, then verify document format, validity, certification, translation and submission channel with the receiving institution or authority.