Google Calendar API pricing: plans, limits & costs
Build a fully custom scheduling experience backed by Google Calendar availability
Pricing verified Oct 2026.
Visit Google Calendar API · Official pricing page
Free plan: Standard usage currently has no additional charge; quotas and a published daily billing threshold apply.
Google Calendar API plans compared
| Plan | Monthly | Billed annually | Limits |
|---|---|---|---|
| Free | Free | — | Standard usage at no additional cost, subject to project/user quotas |
Google updated quotas May 1, 2026. New-project limits: 10,000 requests/minute/project, 600/minute/user/project, and a 1,000,000-request daily billing threshold. Google says excess-usage billing is planned later in 2026 with at least 90 days' notice; confirm effective billing terms before scale-up. Existing projects may retain prior quotas. Workspace subscriptions are separate.
Stacks that use Google Calendar API
- Set up appointment scheduling — Let customers book themselves in. Confirmations and reminders handled automatically.
Google Calendar API pricing FAQ
Does Google Calendar API have a free tier?
Yes. Standard usage currently has no additional charge; quotas and a published daily billing threshold apply.
How much does Google Calendar API cost?
Google Calendar API is free to use — Standard usage currently has no additional charge; quotas and a published daily billing threshold apply..
How up to date is this Google Calendar API pricing?
We last verified it in Oct 2026 against Google Calendar API's public pricing page. Tool pricing changes often — always confirm on the official pricing page before committing.