How is each block end time calculated?

The planner adds the duration in minutes to the start time. After adding a block, the next start time auto-fills to that end time so blocks chain together.

Does it save my plan?

No. The schedule lives only in your browser tab and clears when you reload or close the page. Nothing is sent to a server.

Yes — you can enter any start time you like, so overlaps are possible if you set them. Blocks are sorted by start time for easy reading.

What is time blocking?

Time blocking is assigning each part of your day to a specific task in advance, instead of working from an open to-do list. It reduces context switching and makes your day's capacity visible.

What happens if a block crosses midnight?

Clock times wrap within a 24-hour day, so a block starting at 23:30 for 60 minutes ends at 00:30. The planner shows the wrapped end time.

Can I remove or change a block?

Yes. Each block can be removed, and you can add new ones at any start time. The list re-sorts by start time so your day stays in order.

How is total scheduled time worked out?

It sums the durations of all your blocks and shows the total in hours and minutes, so you can quickly tell whether your plan fits the time you have.

Time Blocking Planner

Time blocking planner — give every hour a job

Time blocking means assigning each part of your day to a specific task instead of working from an open to-do list. This planner lets you build a back-to-back schedule of focused blocks, see each one’s end time, and check your total committed time at a glance. It suits anyone planning a deep-work day, a study session, or a meeting-heavy calendar.

How it works

Each block has a start time (HH:MM), a duration in minutes, and a label. The planner converts the start time to minutes-from-midnight, adds the duration, and converts back to a clock time for the end time, wrapping within a 24-hour day:

end = (start in minutes + duration) mod 1440 → HH:MM

After you add a block, the next start time auto-fills to that end time, so consecutive blocks chain together without manual maths. Blocks are sorted by start time, and the total scheduled time is the sum of all durations.

Example

Add “Deep work” starting at 09:00 for 90 minutes — it ends at 10:30, and the next start pre-fills to 10:30. Add “Email” for 30 minutes (ends 11:00), then “Planning” for 45 minutes (ends 11:45). The planner shows three blocks in order and a total of 2 hours 45 minutes scheduled.

Everything runs in your browser and is never uploaded.