AWS Subnet Calculator
Calculate IPv4 and IPv6 subnet boundaries using Amazon Virtual Private Cloud (VPC) and bring your own IP (BYOIP) allocation rules. Apply service presets for load balancers, Client VPN, Network Firewall, Amazon Elastic Kubernetes Service (EKS) VPC CNI modes, and ECS/Fargate task network interfaces. Everything is calculated in your browser.
Calculation
Subnet details
Classification
Representations
AWS capacity and service guidance
Accepted input formats
CIDR and addresses
Masks and host counts
Ranges and subdivisions