Area Calculator Demo What are you trying to find the area of? Square or Rectangle Circle Triangle (with a 90° angle) Square or Rectangle Length ft. Width ft. Area of Your Square or Rectangle sq. ft. Circle Diameter ft. Area of Your Circle sq. ft. Triangle (with a 90° angle) Side one ft. Side two ft. Area of Your Triangle (with a 90° angle) sq. ft. Submit If you are human, leave this field blank.
