■ FreeWhen

Find a time that actually works.

Send people a window, let them mark when they're free, and see which slot covers the most of the room — rooms and equipment included.

New

Create a board

Set a date range and time window, list who's invited, and get a code to share.

Have a code

Join a board

Enter the code someone sent you to mark your availability or check the results.

1

Create a board with a date range and time window

2

Everyone marks when they're free — no calendar needed

3

The board ranks every slot by how much of the group it covers

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Create a board

Set the window you're trying to schedule within. You can add rooms or equipment that need to be free too.

The board ranks windows of this length, not single cells.
You'll enter each resource's availability yourself right after creating the board.

Board created

Share this code with everyone who needs to respond.

Anyone who opens the link lands straight on this board.

This is your key to editing the board, invitees and resources. It's remembered in this browser — save it somewhere safe to use another device, and don't share it.

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Join a board

Enter the code you were sent, or paste the whole share link.

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Edit board

Change the title, dates, daily window, meeting length, invitees or resources. Responses people have already given are kept; anything outside the new window is simply hidden.

Removing someone hides them from "waiting on"; any availability they already saved still counts.
Removed resources stop constraining the board. New ones need their availability entered from the hub.
← leave board

You're the organiser on this device. Keep this link private — it grants editing rights.
Respond

Mark my availability

Fill in the grid with the times you're free.

Check

View the board

See which times cover the most people right now.

Resources

Each room or piece of equipment needs its own availability. Until it's entered, it doesn't constrain the board.

Only the organiser can enter or change resource availability.

Manage responses — organiser only: remove an entry so someone can start over
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Mark your availability

Click a cell to toggle it. Click a date or time label to select the whole row or column.

or
Files are read in your browser. Links are fetched once and not stored. Either way, only the free/busy grid is saved.
Where do I find my calendar link?
  • Google Calendar: Settings → click your calendar on the left → Integrate calendar → copy Secret address in iCal format.
  • Outlook / Microsoft 365: Settings → Calendar → Shared calendars → Publish a calendar → copy the ICS link.
  • iCloud: in Calendar, share the calendar as Public Calendar and copy the link (webcal:// is fine).

These links give read access to your calendar, so don't share them. FreeWhen doesn't keep the link or the calendar.

Quick fill with rules — "busy Mon/Wed/Fri 10–11", "free Tue & Thu 10–4"
Start from Rules apply top to bottom; later rules win.

Applying replaces the grid. You can still click or drag cells afterwards to fix exceptions.

Not free Free
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