How much does 2 yards of topsoil cover?

Excuse me, I'm curious about the coverage of topsoil. Could you please explain to me how much area 2 yards of topsoil would cover? I'm trying to determine the quantity I need for a gardening project and want to ensure I have enough. Is there a general rule of thumb for this, or does it depend on factors like the soil's density and the project's specifics? Thank you for your help!