Never double-book yourself again.
OneSlate combines your work, personal, and side-gig calendars into one real-time availability — so anyone can book you without seeing what's on your calendar.
Three calendars. One messy schedule.
Double-bookings
A client books a slot your other calendar says is taken.
Constant switching
Checking multiple calendars before you can say yes.
Manual blocking
Copy-pasting Busy events across accounts — and missing one.
One link that knows all your calendars.
- 1Connect your calendars.
- 2OneSlate combines them into one real availability.
- 3Share one scheduling link.
Connect your calendars in a few steps.
Connect
Sign in with Google or Microsoft and add every calendar you use.
Combine
OneSlate reads free/busy across your calendars and calculates when you're actually available.
Share
Send one scheduling link. People pick a time and it lands on the right calendar.
Your schedule stays yours.
People see when you're free. They never see what you're doing.
When OneSlate mirrors busy time onto your other calendars, it uses a label you choose — never titles, locations, or attendees from the original event.
Made for anyone with more than one calendar.
Founders & executives
Company, board, advisory, and personal calendars.
Consultants & coaches
Multiple client calendars plus your own.
Freelancers
Multiple projects and contracts.
Fractional & advisory roles
Several organizations, several calendars, one availability.
From "check three calendars" to "just say yes."
A client wants to book you at 2 PM.
Which one is correct?
Scheduling, in one URL.
One booking is enough to block every calendar you sync — automatically.
Work, personal, several email addresses. Stop entering the same event again and again.
Share one URL
Guests open your OneSlate URL and pick from your real availability.
Book it once
One booking is all you need. No copy-paste to your other calendars.
Blocked everywhere
Your synced calendars are automatically blocked — following the sync rules you set up.
Built to be trusted with your calendar.
Google & Microsoft OAuth
Sign in with your own provider. You can disconnect any time.
Minimal permissions
OneSlate requests only the calendar scopes it needs to read free/busy and place bookings.
Booking pages show free/busy only
Event titles, locations, and attendees never leave your calendar.
Encrypted credentials
OAuth tokens are stored with AES-256-GCM authenticated encryption.
Per-account isolation
Each user only ever sees their own connected accounts and calendars.
Start free — and grow when you need to.
Four email addresses and two scheduling links, free. It's already enough for most people. Move up to Pro or MAX only when you actually outgrow it.
Free
Everything you need to unify your calendars.
- 4 email addresses
- 2 scheduling links
- Work, personal, side gig — one availability
- Booking pages show free/busy only
Pro
For solo workers juggling a bit more.
- 6 email addresses
- 5 scheduling links
- Everything in Free
- Auto-block on your other calendars
- Booking pages show free/busy only
MAX
For anyone consolidating a lot of calendars in one place.
- Unlimited email addresses
- Unlimited scheduling links
- Everything in Pro
- Auto-block on your other calendars
- Work, personal, side gig — one availability
Rolling OneSlate out to a whole team? We can help with shared bookings, centralized billing, and dedicated support.
Prices in USD. Change or cancel anytime.
Frequently asked questions
Does OneSlate work with Google Calendar?
Yes. Sign in with Google, add any calendars in that account, and OneSlate reads free/busy across them.
Does it work with Microsoft 365 / Outlook?
Yes. Sign in with Microsoft (Azure AD) to connect Outlook / Microsoft 365 calendars.
How many calendars can I connect?
Up to 4 calendar accounts on the free plan — enough for most people juggling work, personal, and side-gig calendars.
Can people who book me see my event details?
No. Your booking page shows only free / busy time. Event titles, locations, and attendees never appear to the person booking.
What happens on my other calendars when I have a meeting?
You can optionally mirror busy time onto your other calendars using a label you choose. Only the label is copied — never the original title, location, or attendees.
Can I use work and personal calendars together?
That's exactly what OneSlate is for. Connect both, and your booking link reflects the union of everything you're busy with.
Do people booking me need an account?
No. Guests visit your link, pick a time, and confirm — no signup required.
Is OneSlate free?
Yes. The Free plan is $0 and includes up to 4 email addresses and 2 scheduling links — enough for most people. Upgrade to Pro or MAX when you need more.