What date is 4 weeks from today?

The answer at the top of this page is worked out in your browser against today's date, so it is always current — there is no cached "today" baked into the page.

4 weeks is exactly 28 days. Because that is a whole number of weeks, the result always falls on the same day of the week as the start date.

Calendar arithmetic is less obvious than it looks. Adding 4 weeks to January 1, 2026 gives January 29, 2026, while the same offset from July 1, 2026 gives July 29, 2026 — the same span, but landing on a different weekday. The table above lists the result from the 1st of every month of 2026 so you can read off the pattern directly.

For an offset from a date other than today — or to measure the gap between two dates you already have — use the date difference calculator.