Firebase pricing in 2026: Spark vs Blaze and what your app will pay

Firebase plans and prices

Firebase is free until it is not. The Spark plan covers prototypes and the Blaze plan has no monthly fee, so the bill depends entirely on how your app uses Firestore, Authentication, Hosting, Cloud Functions and Storage. Each product has its own free quota and unit price, which makes the total hard to predict.

This guide prices the products that drive most Firebase bills, using rates from Firebase's official pricing page and Google Cloud's pricing pages.

Prices below were recorded on 12 October 2026. The headline figure is the lowest price you can get for that plan. Check the official page before you buy, because vendors change prices without notice.

Read this first. Firestore rates use the nam5 (US multi-region) location from Google Cloud's Firestore pricing page (USD 0.06 reads, USD 0.18 writes, USD 0.02 deletes per 100,000, storage USD 0.000246575 per GiB-hour, about USD 0.18 per GiB-month). Single-region US locations such as us-central1 are USD 0.03, USD 0.09 and USD 0.01. The scenarios assume a 30-day month for the daily free quotas (1.5M reads and 600K writes free). Identity Platform MAU pricing applies to projects upgraded to Firebase Authentication with Identity Platform. The USD 300 Blaze credit is "if eligible" per the pricing page. The third and fourth plan cards are usage rates and not plans. The Spendflo URL is a vendor profile page, not a pricing guide.

Firebase cost calculator

Move the slider to see what each plan costs at your size. The figures use the list prices on this page and leave out tax, add-ons and any discount you negotiate.

What one app costs at 30M reads and 6M writes a month, with phone sign-in and 100,000 users

Firebase bills by usage, so this table follows one app through 20,000 phone sign-ins a month and growth to 100,000 monthly active users.

Where the bill grows

A Firebase bill is product usage beyond free quotas. These are the places it moves.

What each Firebase plan includes

Compare the plans side by side. Where a cell says Check page, the vendor's pricing page was not specific enough for us to fill it in.

Features we could not place by plan: Analytics, Crashlytics, Cloud Messaging. Check the official page for which plan includes each one.

Which Firebase plan should you pick?

How to pay less for Firebase

1. Set budgets and alerts

   Create Google Cloud budget alerts before upgrading to Blaze, because Blaze bills all usage beyond the free quotas.

2. Choose the right location

   A single-region US Firestore database costs half the nam5 rate per read, write and delete.

3. Reduce phone sign-in SMS

   Offer email link, Google or Apple sign-in first and keep phone verification as a fallback.

4. Cache and paginate reads

   Cache data on the client and paginate queries so screens read fewer documents.

5. Buy committed use

   Firestore committed-use discounts cut read and write prices by about 20% for 1 year and 40% for 3 years.

6. Use the Blaze credit

   Eligible new Blaze users get USD 300 in credit, so use it to measure real usage before committing.

Subject: Firebase renewal on [renewal date]

Hi [account manager],

Our Firebase [plan] subscription renews on [renewal date]. Over the last 90 days, [active firestore reads per month] of the [paid firestore reads per month] we pay for used it.

We would like to renew with [target firestore reads per month] on a [term] term. Before we sign, please send:
1. The current list price and the price you are offering us, line by line.
2. The cap on any price increase at the next renewal.
3. The notice period if we want to cut firestore reads per month or move to another plan.

We are comparing this against [alternative] and plan to decide by [decision date]. If you can offer [target discount] percent off list, or a lower price for a longer term, we are ready to talk this week.

Thank you,
[name]
[company]

Firebase alternatives and what they cost

If this vendor does not fit, these are the closest options and what they charge.

Keeping Firebase spend under control

Every feature a developer ships changes read and write counts. The bill arrives through Google Cloud billing, and the person who wrote the query rarely sees it.

• Set budgets and alerts. Usage bills grow without anyone signing anything. Set a monthly budget and an alert at 80 percent of it.
• Tag cost to a team. Give every project an owner so a bill can be traced. Our spend management software guide covers the controls to look for.
• Review commitments before renewal. Committed spend discounts only pay off if you use the commitment. Compare 12 months of real use with the plan before you renew, using a renewal tracker.
• Count the full cost, not the list price. Support, egress, extra seats and add-ons change the real figure. Our total cost of ownership guide shows how to add it up.

Bottom line. Prototype on Spark, move to Blaze when you need Functions or Storage, and set budgets the same day. Watch phone authentication and Firestore reads, which drive most surprises, and consider committed use once usage is stable.

Firebase pricing questions

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