How long can help text be when added to a control?

Help text added to a control can enhance user experience by providing guidance or clarifications regarding the use of that control. The correct character limit for help text is up to 280 characters. This length allows for sufficient information to be conveyed, ensuring that users have enough context to understand the purpose of the control without overwhelming them with too much information.

This character limit is particularly useful in maintaining readability and ensuring that the help text fits within the design of the user interface, keeping it concise yet informative. It balances the need for helpfulness with the potential risk of cluttering the interface, which could lead to confusion for users.