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WasyTech
AvailableOpen SourceMIT

CIDR Subnet Calculator

Instant, client-side IP subnet math.

Calculate IPv4 and IPv6 network ranges, broadcast addresses, and usable host counts instantly. Built with pure bitwise operations in TypeScript, this tool requires no server round-trips, ensuring zero latency and absolute privacy for your network architecture.

  • Web
Open SourceLocal processingNo account

Downloads for this utility are being prepared.

Core features

Included in the free core utility.

  • Real-time IPv4 and IPv6 CIDR parsing
  • RFC 3021 compliance for /31 and /32 subnets
  • Visual binary bitmask representation

Privacy & data handling

This utility processes data locally on your device wherever technically possible.

Processing
Local, on your device
Account
Not required
Internet
Works offline
Telemetry
No telemetry

Details

Category
Developer Tools
Platforms
Web
License
MIT

Frequently asked questions

What does CIDR Calculator do?

Calculate IPv4 and IPv6 network ranges, broadcast addresses, and usable host counts instantly. Built with pure bitwise operations in TypeScript, this tool requires no server round-trips, ensuring zero latency and absolute privacy for your network architecture.

Is CIDR Calculator free?

Yes. CIDR Calculator is free to use.

Is CIDR Calculator open source?

Yes. CIDR Calculator is open source under the MIT license.

Does CIDR Calculator require an account?

No. CIDR Calculator does not require an account.

Does CIDR Calculator send my data anywhere?

CIDR Calculator has no telemetry. Processing happens locally on your device.

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