How does Cloud SQL high availability work?

Cloud SQL HA creates a standby instance in a different zone within the same region. The standby uses synchronous replication and automatic failover. Enabling HA roughly doubles the compute cost since you run two instances. The estimator shows the exact cost increase so you can weigh reliability against budget.

What are Committed Use Discounts for Cloud SQL?

CUDs provide up to 25% discount for 1-year commitments and 52% for 3-year commitments on Cloud SQL vCPU and memory costs. Unlike Reserved Instances on other providers, CUDs apply at the project level and can cover any Cloud SQL instance. The estimator calculates your savings for each term length.

Does the estimator include network egress costs?

Yes. The estimator includes charges for data egress between the Cloud SQL instance and clients in different regions or on the internet. Intra-region traffic to Compute Engine VMs is free. Cross-region and internet egress rates are broken out separately.

Cloud SQL Cost Estimator

StorageGCP

Estimate Cloud SQL costs for MySQL, PostgreSQL, and SQL Server with HA, read replicas, and Committed Use Discounts.

Cloud SQL Configuration

Example Presets

Database Engine

Machine Type

High Availability (HA)

Doubles instance cost by adding a standby in another zone

Read Replicas

Each replica costs the same as the primary instance.

Storage & Backups

Storage Type

Storage (GB)

Backup Storage (GB)

$0.080/GB-month

Network Egress (GB)

$0.12/GB cross-region

Committed Use Discount (CUD)

CUD discounts apply to compute (instance) costs only, not storage or licenses.

Raw Output

Output will appear here...

About This Tool

The Cloud SQL Cost Estimator calculates monthly costs for Google Cloud SQL instances running MySQL, PostgreSQL, or SQL Server. It covers machine type selection (shared-core to high-memory), storage type (SSD or HDD), high availability with regional failover, read replica pricing, and backup storage. The tool also models Committed Use Discounts that can reduce compute costs by up to 25% for 1-year commitments and 52% for 3-year commitments. Enter your desired configuration to see a detailed cost breakdown that separates compute, storage, networking, and backup charges for accurate budget planning.

When to Use This Tool

•Estimating the monthly cost of a high-availability Cloud SQL PostgreSQL instance with two read replicas for a production web application.
•Comparing SSD versus HDD storage costs for a Cloud SQL MySQL instance where high IOPS are not required.
•Calculating Committed Use Discount savings for a Cloud SQL deployment that will run continuously for at least one year.
•Sizing a Cloud SQL for SQL Server instance and comparing licensing costs against Azure SQL Database.

Frequently Asked Questions

How does Cloud SQL high availability work?: Cloud SQL HA creates a standby instance in a different zone within the same region. The standby uses synchronous replication and automatic failover. Enabling HA roughly doubles the compute cost since you run two instances. The estimator shows the exact cost increase so you can weigh reliability against budget.
What are Committed Use Discounts for Cloud SQL?: CUDs provide up to 25% discount for 1-year commitments and 52% for 3-year commitments on Cloud SQL vCPU and memory costs. Unlike Reserved Instances on other providers, CUDs apply at the project level and can cover any Cloud SQL instance. The estimator calculates your savings for each term length.
Does the estimator include network egress costs?: Yes. The estimator includes charges for data egress between the Cloud SQL instance and clients in different regions or on the internet. Intra-region traffic to Compute Engine VMs is free. Cross-region and internet egress rates are broken out separately.

Disclaimer: This tool runs entirely in your browser. No data is sent to our servers. Always verify outputs before using them in production. AWS, Azure, and GCP are trademarks of their respective owners.