Cloud Firestore (firestore)
- Free allowance
- 1 GiB stored, 50,000 document reads per day, 20,000 writes per day, 20,000 deletes per day, exactly one free database per project
- Verdict
- ★ qualifiesusable as stated; the read path was probed
- Cost
- free tier
- Identity
- emailno card, no phone
- Binding limit
- request-rate50,000 document reads and 20,000 writes per day
- Evidence
- documented1 source; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-23checked 2026-10-23 (live); stale on 2026-11-23
| Free tier | 1 GiB stored, 50,000 document reads per day, 20,000 writes per day, 20,000 deletes per day, exactly one free database per project unit GiB; metered on request-count |
|---|---|
| Price | none stated |
| Limits |
a project may hold up to 100 databases, but only one is free, so multiple logical databases is a paid feature |
| Identity | email a Google account |
| Egress | 10 GiB a month of outbound data transfer is included in the free quota; beyond it the transfer is billed at the standard Cloud Firestore network rate, and reads are counted as operations against the daily quota free allowance: 10 GiB per month |
| Per-object cap | 1 GiB stored; a 1 MiB document size limit applies to the engine |
| Retention | data persists; there is no inactivity deletion on the free quota |
| Interface | rest, graphql a REST and gRPC API with realtime listeners; SDKs for web, mobile and server; a GraphQL-ish query surface is not offered, the REST and gRPC APIs are |
| Tooling | the Firebase Admin SDK; the gcloud and firebase CLIs; REST |
| Composes with | 1 GiB of document state with client SDKs and realtime sync, which no other free tier here gives |
| Reliability | no reliability event recorded |
| Notes | The one-database rule is the constraint that a multi-tenant design meets first, not the 1 GiB. |
| Evidence note | documented the quotas page was read and states 'exactly one free database per project'. |
| Parsed numbers |
|
Evidence 1
| date | source | what it proved |
|---|---|---|
| 2026-10-22 | firebase.google.com/docs/firestore/quotas | Free quota: 1 GiB stored data, 50,000 document reads/day, 20,000 writes/day, 20,000 deletes/day; 'Cloud Firestore allows exactly one free database per project' |
Unknown values 1
$.reliability_notenothing of this kind was observed