CIDR to IP Range Converter

Calculate start and end boundary IP addresses and total address count for any IPv4 CIDR block.

How It Works & Processing Standards

Calculate start and end boundary IP addresses and total address count for any IPv4 CIDR block.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

CIDR to IP Range Converter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use CIDR to IP Range Converter

  1. 1
    Input CIDR BlockType CIDR notation (e.g. 192.168.10.0/23).
  2. 2
    View Range LimitsSee start IP, end IP, and total IP count.

Common Use Cases

  • Configuring DHCP allocation pools and firewall port forward ranges
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