Trademark & copyright disclosure

About the name "9DC"

"9DC" is used on this website solely as the domain-name identifier of 9DC.com. On this site, "DC" is used only in its generic, descriptive technical sense of direct current, and "9" refers to the nine free calculators the site offers.

No claim of exclusive rights is made in the letters, numbers or combinations "9", "DC" or "9DC". This website is not affiliated with, endorsed by, sponsored by or connected to:

• DC Comics or any entertainment brand using "DC";
• the District of Columbia or any government body;
• any data-center operator, company, product, organisation or person using "9DC", "DC" or a similar name or number.

The 9DC badge on this site is an original typographic mark and is not intended to resemble any third-party logo.

Third-party marks

Names of vehicles, manufacturers, charging networks, connectors and standards (for example Tesla, NACS, J3400, CCS, CHAdeMO, Type 2, GB/T), equipment makers, publishers and YouTube channels are trademarks or registered trademarks of their respective owners. They are used only to identify products, standards and sources, in a nominative and descriptive manner. Their use does not imply any affiliation or endorsement.

Copyright

All original text, calculators, source code, illustrations and design on 9DC.com are © 2026 9DC.com. Embedded YouTube videos remain the property of their creators and are displayed using YouTube's standard embed player. Factual figures from public sources are credited on the pages and in our resources directory.

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