Legal
Terms & Conditions
Last updated: September 25, 2026
Using HDLbits
HDLbits provides educational material and browser-based tools for practicing hardware description languages and digital design. You may use the site for lawful learning and development. Do not disrupt the service, attempt to gain unauthorized access, or use it to violate another person's rights.
Your work
Your editor drafts are stored in your browser. You are responsible for keeping any separate copy of work you want to preserve. HDLbits does not promise that browser-stored drafts will remain available.
Educational content and availability
Problems, explanations, and simulator results are provided for practice and learning. They may contain mistakes and are not a substitute for professional engineering review. The site and its tools are provided as available; functionality may change, be interrupted, or be removed.
Third-party software
The site includes third-party tools and software. Those components remain subject to their own licenses and notices, which are provided with the relevant component where applicable.
Updates and contact
These terms may be revised as the site evolves. Continued use after an update means you accept the revised terms to the extent permitted by applicable law. Questions can be sent through the Contact Us page.