Raw usage estimate

Firebase Cost Calculator 2026

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

Open the scenario planner Review my Firebase architecture

Inputs

Monthly usage assumptions

Firestore

Reads/day

Writes/day

Deletes/day

Storage, GiB

Egress, GiB/month

Realtime Database

Storage, GB

Downloaded data, GB/month

Cloud Functions

Invocations/month

Average runtime, ms

Memory, MB

CPU, GHz planning value

Egress, GB/month

This calculator uses common public pricing assumptions for planning. Exact bills vary by region, database edition, function generation, networking path, indexes, and free-tier eligibility.

Estimate

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 Cloud Functions pricing