Advanced VPC Calculator & Subnet Planner

Plan and visualize your cloud network architecture with CIDR calculator, subnet distribution, and infrastructure-as-code export

🌐 Professional VPC Network Planning Tool

Calculate CIDR blocks, plan subnets across availability zones, visualize network architecture, check for IP conflicts, and export to Terraform or CloudFormation. Perfect for AWS, Azure, and GCP network planning.

⚙️ VPC Configuration

Format: IP/Prefix (e.g., 10.0.0.0/16, 172.16.0.0/12, 192.168.0.0/24)

📊 VPC Information

🗂️ Subnet Allocation

Visual Network Architecture

Terraform Configuration

CloudFormation Template

Estimated Monthly Costs

Features

  • CIDR Calculator: Validate and calculate IP ranges for VPC blocks
  • Multi-Cloud Support: AWS, Azure (VNet), and GCP configurations
  • Subnet Planning: Automatic subnet distribution across availability zones
  • Multiple Strategies: Even distribution, public/private, or 3-tier architecture
  • Visual Diagrams: ASCII network architecture diagrams
  • IP Conflict Detection: Validate subnet overlaps and conflicts
  • IaC Export: Generate Terraform and CloudFormation templates
  • Cost Estimation: Estimate monthly costs for VPC components
  • Client-Side: 100% browser-based, your network plans stay private

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FAQs

How should I pick a VPC CIDR?
Choose a non‑overlapping private CIDR (RFC1918) sized for growth (e.g., 10.0.0.0/16). Avoid conflicts with on‑prem or peered networks.
What subnet sizes are recommended?
/24 is common for application tiers; /28–/26 for smaller/internal tiers. Balance IP usage, AZ distribution, and future scale.
How do I avoid overlapping IPs?
Use the planner’s conflict warnings and reserve ranges for peering/VPN. Keep a registry for all assigned CIDRs across environments.
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