Raw usage estimate

Advanced Firebase Cost Calculator 2026

Estimate a monthly Firebase bill from direct usage numbers for Firestore, Realtime Database, and Cloud Functions.

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Inputs

Monthly usage assumptions

Firestore Standard edition reference location

Firestore

Reads/day

Writes/day

Deletes/day

Storage, GiB

Egress, GiB/month

Realtime Database

Storage, GB

Downloaded data, GB/month

Cloud Functions (1st gen, Tier 1 reference)

Invocations/month

Average runtime, ms

Memory, MB

CPU, GHz planning value

Egress, GB/month

Pricing reviewed July 12, 2026. Firestore egress uses the first common worldwide internet-transfer tier after the 10 GiB monthly allowance. Functions runtime is rounded up to 100 ms per invocation. Exact bills vary by region, destination, database edition, function generation, indexes, billing-account usage, and free-tier eligibility.

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Monthly cost

Change any input to update the estimate.

Estimated total

A raw estimate tells you what the bill could be. The scenario planner helps explain which architectural behavior creates that bill.

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Pricing references: Firebase pricing Firestore billing docs Firestore multi-region example Realtime Database billing Cloud Functions pricing