How do I calculate 4 weeks notice?

Add 28 days to the notice-given date unless your contract states a different rule.

4 Weeks Notice Period Calculator UK

4 weeks notice period calculator UK: enter the date notice is given and calculate 28 days ahead.

A 4-week notice period is usually 28 days. Contract wording can change this, so always check your agreement.

Is 4 weeks the same as one month?

No. Four weeks is 28 days and can differ from one calendar month.

Is this legal advice?

No, this is a planning aid only.