Use this simple yardage calculator to calculate cubic yards.
Additional Concrete Resources
Great Resource for General Concreting
Read this article about general concreting best practices: The What, Why & How of Concrete
Cold Weather Concreting report by ACI Committee
Read this PDF report about methods for producing satisfactory concrete is cold weather conditions: Cold Weather Concreting
Hot Weather Concreting report by Concrete Network
Read this article about methods for producing satisfactory concrete is hot weather conditions: Hot Weather Concreting