addWeeks

addWeeks(date, count) → date · Date & Time

Add (or subtract) weeks to a date. Equivalent to addDays(date, count * 7).

• date (required): the starting date or datetime

• count (required): number of weeks to add. Negative to subtract.

addWeeks(parseDate("2026-05-01", "yyyy-MM-dd"), 2)     // 2026-05-15
addWeeks(parseDate("2026-05-01", "yyyy-MM-dd"), -1)    // 2026-04-24