MakesLab 100% Free Utility
● Privacy-First Browser Application

Best CIDR Subnet Calculator And IP Range Planner Online (2026 Free Web Utility)

Instantly plan, calculate, and visualize IPv4 CIDR blocks, subnet masks, usable host ranges, and cloud VPC sub-allocations. Free, client-side, zero tracking, and designed for DevOps, Sysadmins, and Network Engineers.

cidr-subnet-calculator-and-ip-range-planner-online
Pure Client-Side Engine (Zero Server Logging)
Click to load
/24 (255.255.255.0)
192.168.1.0/24 Private (RFC 1918 Class C)
Netmask
255.255.255.0
Wildcard Mask
0.0.0.255
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Total Host Capacity
256
Usable Hosts
254
Usable Host Range: 192.168.1.1 - 192.168.1.254
Equal Child Subnets (/n+1) SPLIT
Terraform & Cloud Config 

          

        


      


      
    


    
    

      

        

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Frequently Asked Questions

      

        

          
          
        

        

          
          
        

        

          
          
        

      

    


    
    

      
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Frequently Asked Questions

    

      Is CIDR Subnet Calculator & IP Range Planner free to use?
      
Yes, CIDR Subnet Calculator & IP Range Planner is completely free with no signup or registration required. All processing happens directly in your browser.

    

    

      Is my data safe?
      
Absolutely. Your data never leaves your device. Everything runs locally in your browser — no uploads, no servers, no tracking.

    

    

      Do I need to install anything?
      
No installation needed. CIDR Subnet Calculator & IP Range Planner works entirely in your web browser on both desktop and mobile devices.

    

    

      How do I use 
      
Simply enter or paste your input in the tool above, and the result will be generated instantly. No configuration required.

    

  

  

  
  

  
  

    
    Verified Pure Client-Side (All Tests Passed)
  


  

  

  

  
  

    

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