Week Calculator

Use the week tool

Find the current ISO week and calculate week-based dates.

The name emphasizes a destination: show both the starting point and resulting date.

A clock reading or duration can cross midnight. Include the calendar date, UTC offset and named time zone whenever a result will be shared.

Confirm the calendar date, local clock time, UTC offset and named time zone so another person can reproduce the same result.

Frequently asked questions

What is week.to?

week.to is a focused week calculator tool and guide.

Why does the date matter?

A time calculation can cross midnight, so the local date and time zone are part of the answer.

Can I share the result?

Yes. Include the input date, local time, UTC offset and named time zone so the result can be checked.