How do I add weeks to a date?
Pick the start date, enter how many weeks to add, and the calculator returns the resulting date along with its weekday and ISO week number.
whatweek.ca
See what week of the year it is right now in Canada, including the current week number and the dates this week starts and ends.
Add Weeks to a Date
How many weeks do you want to add? The calculator returns the resulting date with its weekday and ISO week.
- Resulting date
- Wednesday, June 10, 2026
- ISO
- 2026-06-10
- Weekday
- Wednesday
- ISO week
- 2026-W24
Frequently asked questions
Can I subtract instead?
Yes — use the 'Subtract' tab or the dedicated Subtract Weeks page.
How is it calculated?
We add N × 7 days to the selected date in UTC, then return the result. This avoids ambiguity around daylight-saving transitions.