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There's a free plan; paid tiers are quoted.
Firebase can start at $0 per month, but that does not mean every project stays free. Spark includes capped daily and monthly quotas; exceed them and services stop until quotas reset. Blaze keeps those no-cost allowances, then charges for usage beyond them, with no annual price published. Eligible new users may get $300 in Google Cloud credit, and SQL Connect has a three-month no-cost trial. Those offers are separate from Firebase’s ongoing plan pricing.
01Every plan, line by line
| Plan | Billed annually | Billed monthly | Built for |
|---|---|---|---|
| Spark | — | $0 | Projects within free quotas |
| Blaze | — | $0 | Projects needing usage-based scaling |
Add-ons and overages
- Extensions are free to install; underlying Firebase and Google Cloud usage may be charged. Data Connect/Cloud SQL and integrated services such as Cloud Build and BigQuery may incur charges.
- Firestore overages: $0.03/100,000 reads; $0.09/100,000 writes; $0.01/100,000 deletes; $0.108–$0.15/GiB-month stored; $0.12/GiB egress.
- Functions overages: $0.40/million invocations; $0.0000025/GB-second; $0.0000100/CPU-second; $0.12/GB outbound networking.
- Hosting: $0.026/GB stored and $0.15/GB transfer beyond the free tier. App Hosting uncached outbound bandwidth: $0.20/GiB beyond 10 GiB monthly, plus Google Cloud rates.
- Authentication: $0.0055/MAU from 50,000 to 100,000 MAU for standard providers; phone verification varies by country (US $0.01, UK $0.04, India $0.07 per verification).
- Remote Config: $0.000006/request beyond 100,000 daily. Test Lab: $1/device-hour virtual or $5/device-hour physical beyond daily free limits.
- Cloud Build: $0.003/minute beyond 120 minutes daily.
02What the plan grid doesn't tell you
Database overages
Beyond free Firestore quotas, reads cost $0.03 per 100,000, writes $0.09 per 100,000, and deletes $0.01 per 100,000; storage and egress also cost extra.
Authentication charges
Standard-provider authentication costs $0.0055 per MAU from 50,000 to 100,000. Phone verification is priced by country; US verification is $0.01 each.
Hosting and bandwidth
Hosting beyond its free tier costs $0.026 per GB stored and $0.15 per GB transferred. App Hosting has separate uncached bandwidth charges.
Functions and services
Functions, Cloud Build, Test Lab, Remote Config, and integrated services can incur usage charges beyond their free allowances.
03Which plan should you buy?
| If you are… | Get | Why |
|---|---|---|
| Small projects within quotas | Spark | It costs $0 and fits projects within the listed free limits; exceeding quotas stops services until they reset. |
| Apps needing usage-based scaling | Blaze | It retains Spark’s no-cost quotas and lets usage scale beyond them, with charges based on consumption. |
| Teams needing predictable bills | Spark | Its listed quotas make costs easier to bound, but services stop at the limits rather than continuing through paid overages. |
04Is Firebase worth the money?
Firebase offers a broad app backend at a $0 entry price, with databases, authentication, hosting, functions, monitoring, testing, and engagement tools in the platform. The trade-off is that Blaze has no fixed monthly price: bills depend on usage, and integrated Google Cloud services may add charges. Spark avoids overage bills by stopping services at quota limits. Whether Firebase costs less than another backend cannot be determined from the pricing information here; compare your expected usage and required services before switching.
Firebase pricing FAQ
Is Firebase free or paid?
Both. Spark is free within its published quotas, including 50,000 monthly active users for Authentication and 50,000 Firestore reads per day. Blaze has a $0 base fee and includes Spark’s no-cost quotas, but usage beyond free allowances is billed. On Spark, excess usage stops services until quotas reset.
What is replacing Google Firebase?
The pricing information here does not indicate that Firebase is being replaced. Firebase is Google’s platform for building, deploying, testing, monitoring, and scaling apps. If you are evaluating a switch, compare alternatives against the services you use and your expected usage; no replacement or migration path is specified here.
What is Google Firebase used for?
Firebase provides app-development services without requiring teams to manage backend infrastructure. Its listed capabilities include NoSQL databases, authentication, serverless functions, hosting and storage, crash and performance monitoring, device testing, messaging, and Remote Config for app engagement.
Which is cheaper, Firebase or Supabase?
We can’t name a cheaper option from the pricing information available here; it includes Firebase prices but no Supabase pricing or like-for-like usage comparison. Firebase starts at $0, while Blaze charges for usage beyond free quotas. Compare expected database, bandwidth, authentication, and compute usage on both platforms.