Cloud NAT pricing
Cloud NAT pricing is based on the following usage:
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An hourly price for the NAT gateway that is based on the number of VM instances that are using the gateway. The per-hour rate is capped at 32 VM instances. Gateways that are serving instances beyond the maximum number are charged at the maximum per-hour rate.
Google Cloud counts VM instances that get a NAT assignment as using the gateway. The NAT gateway performs source NAT (SNAT) for data transfer traffic from resources that don't have external IP addresses, and destination NAT (DNAT) for ingress packets that arrive as responses to outbound packets.
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A per-GiB cost for data transfer that is processed by the gateway. The data processing price is the same across all regions. Data transfer costs to send traffic from the VM out of the network also apply.
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An hourly price for each static or ephemeral external IP address that is used by a NAT gateway.
| Number of assigned VM instances | Price per hour for NAT gateway | Price per GiB processed, inbound and outbound data transfer | Price per hour for a static or an ephemeral external IP address used by a NAT gateway** |
|---|---|---|---|
| Up to 32 VM instances | $0.0014 * the number of VM instances that are using the gateway | $0.045 | $0.005 |
| More than 32 VM instances | $0.044 | $0.045 | $0.005 |
If you pay in a currency other than USD, the prices listed in your currency on Cloud Platform SKUs apply.
The total cost for running a NAT gateway and running traffic through it is as follows:
total cost for running the gateway = hourly cost for the NAT gateway + cost per GiB of data that is processed by the gateway + hourly cost for the external IP addresses used by the gateway + data transfer costs for any traffic leaving the network
Pricing example
The following table shows the estimated monthly cost for a single NAT gateway that uses external IP addresses to serve a different number of VM instances. For both cases, the gateway runs for 720 hours in a billing cycle.
| Usage | Estimated bill |
|---|---|
14 VM instances Gateway uses one external IP address Gateway processes 100 GiB of traffic (data transfer) |
($0.0014 * 14 instances * 720 hours) + ($0.005 * 1 external IP addresses * 720 hours) + (100 GiB processed traffic * $0.045) = $22.21 |
36 VM instances Gateway uses two external IP addresses Gateway processes 200 GiB of traffic (data transfer) |
($0.044 * 720 hours) + ($0.005 * 2 external IP addresses * 720 hours) + (200 GiB processed traffic * $0.045) = $47.88 |
Logging pricing
NAT logging pricing is described in Network Telemetry pricing.
Standard pricing for Cloud Logging, BigQuery, or Pub/Sub apply.
What's next
- Read the Cloud NAT documentation.
- Try the Pricing calculator.
- Learn about Cloud NAT solutions and use cases.