Contact

Corrections, questions and takedown requests all go to the same place.

Reporting a wrong value

Include the page URL and the value you expected. If you have a source — a manufacturer PDF, an official table, a measurement — include that too. Corrections with a source get fixed within a day or two; corrections without one take longer because they have to be verified independently.

Business enquiries

Advertising, data licensing and partnership enquiries can use the same address. Please put the topic in the subject line.