Quick Click Flooring Estimator Tool
 

If you're looking to re-floor one of your rooms but its a little quirky in size. Check out this website. Its kinda nice. It'll calculate areas for rooms with angled corners. It also calculates areas that you don't want included in the area calculation. For instance, if you want a tile pathway that meets up with a carpeted area. Its kinda just fun to play around with too.

Quick Click Flooring Estimator Tool by FindAnyFloor.com

huh, pretty cool. though I just finished the last of the 2 rooms I had to do. one was that 'custom' size. So many angles. It wasn't bad for the floor, but cutting the angle for the trim was insane. then the second floor was a rectangle. SOOO much easier.