School Timetable Generator.

Build a timetable in six steps

1. School: tick the working days (Monday–Friday, Monday–Saturday or Sunday–Thursday presets), list the periods of the day with their breaks and lunch, and close the slots that are free for everyone, such as a free afternoon.
2. Subjects: give each one a colour, the room it needs (laboratory, computer room, sports hall or another type) and whether its lessons are single periods, may be doubled or must be doubled.
3. Teachers: tick the subjects each person teaches, set optional daily and weekly maxima and click their availability grid: once for unavailable, twice for “rather avoid”.
4. Classes: enter the hours per week of each subject and choose the teacher. A live counter compares the hours requested with the lesson slots of the week, and you can duplicate a class to create a parallel one.
5. Rooms and preferences: add the shared rooms, then choose how strongly to avoid gaps, spread subjects over the week, limit consecutive periods and keep heavy subjects in the morning.

Lists of names can be pasted, one per line. Load the example (a fictitious school with 6 classes and 11 teachers) to see a complete project before entering your own.

Generate, check and adjust

Before the calculation, the tool checks the data and explains each blocking problem, for example a teacher assigned 26 hours with only 22 available slots, or a class asking for more hours than the week contains. Each message takes you to the step to fix.

The calculation runs in your browser and shows its progress; you can cancel it. The result lists any preference issues left; click one to highlight the slots concerned. Switch between the views by class, by teacher and by room.

To adjust the result, drag a lesson to another slot, or click it and then click the target. Green slots are allowed; red slots are refused and say why (teacher busy, room taken, closed slot). Dropping a lesson on another lesson of the same class swaps them. Lock the lessons you want to keep, then press Regenerate: locked lessons stay where they are.

Export, print and share

Export one timetable or all of them as an A4 landscape PDF (one page per class, teacher or room, Arabic and other scripts included), a PNG image, an Excel workbook with one sheet per class and teacher, or a CSV list of every lesson. Print uses a clean layout without the page around it.

Each teacher’s week can be exported as a recurring calendar (.ics) for Google Calendar, Outlook or Apple Calendar; for single events see the ICS Event Generator. Save the whole project as a .json file to continue later or on another computer, or copy a share link: the data travels inside the link. To plan the school year itself, use the Printable Calendar.