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Free, 100% client-side IP subnet and CIDR calculator. Calculate IPv4/IPv6 ranges, masks, usable hosts, AWS/Azure/GCP cloud VPC offsets, and export Terraform cidrsubnet configurations instantly.

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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.

Which is more popular?
Based on our record, calculator.net seems to be more popular. It has been mentioned 72 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | devsubnet.com | calculator.net |
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| Company | Startup from India · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


DevSubnet is a 100% client-side IP subnet and CIDR calculator engineered for network engineers, DevOps specialists, and cloud architects. All calculations execute locally in the browser with zero server logging, ensuring sensitive corporate network architectures remain private. Key Features Cloud...
No description of calculator.net yet.
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DevSubnet and calculator.net.
DevSubnet's answer
Generates 1-click configuration code for Terraform, Ansible, and CloudFormation.
DevSubnet's answer
Legacy subnet calculators are often ad-heavy, send IP parameters to remote backend servers, and assume a generic two-IP loss per subnet (network and broadcast). DevSubnet eliminates security risks by processing everything locally with zero latency, while reflecting modern cloud-native realities—such as multi-AZ cloud VPC offsets, visual recursive subnet splitting, and direct IaC syntax generation.
DevSubnet's answer
The primary audience includes DevOps engineers, cloud architects (AWS, Azure, GCP), network administrators, and CCNA/CCNP certification students who need fast, secure, and mathematically precise IP planning without leaking infrastructure details.
DevSubnet's answer
Network engineers and DevOps professionals frequently plan private VPCs and Kubernetes clusters, yet most available subnet tools require transmitting sensitive CIDR blocks across the wire to unknown servers. DevSubnet was built to create a privacy-first, zero-log alternative that treats subnet calculation as an essential, high-speed developer utility with modern cloud support.
DevSubnet's answer
DevSubnet is built as a static, client-side web application utilizing modern JavaScript/TypeScript, HTML5, and Tailwind CSS. All mathematical derivations, bitwise manipulations, and CIDR calculations run locally within the user's browser engine with zero backend compute requirements.
DevSubnet's answer
Share your experience with using DevSubnet and calculator.net. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DevSubnet since Sep 2026.
Back to the 'how much house can I afford', I saw one on NerdWallet, its numbers were all over the place, another simple one calculator.net here, claims the house we can afford is $471,778 (and $31,000 down). We found a new build with... Source: almost 3 years ago
You could tackle it head on and do $1,000/mo. Per calculator.net, you would end up paying it all off in 15 months, costing you ~$14,450 including interest. Splendid, you're done. Source: about 3 years ago
So I'm making myself a cutting diet to lose weight and after using 2 different website to find my recommended calorie intake, and having the exacte same settings on both, calculator.net gives me a 1lb lost/week of 2900 cal/day,... Source: about 3 years ago
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LanCalculator - IP Subnet Calculator for IPv4/IPv6 Networks - LizardSystems
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