Terms of use
Using the service
SubnetTidy is a free browser-based network calculation and learning tool. Features may change as the service develops. You may use exported calculation results for your learning and network plans.
The site does not execute commands on devices or scan hosts. Use its results in environments you are authorized to manage and follow the applicable operational policies.
Limits of the results
Counts follow the stated arithmetic rules. They do not fully account for special-purpose space, cloud reservations, device support or actual address availability. Independently review important changes against your deployment environment.
Practice scores are temporary learning aids, not certifications or examination results. Valid syntax and arithmetic do not guarantee connectivity, performance or security.
Your work and contact
Calculations are not automatically saved. Export needed results before reloading, changing languages or closing the tab. You are responsible for keeping your downloaded files.
Nothing here is intended to remove rights provided by applicable law. Contact the operator listed on the Contact page with problems or feedback.