Inaccurate
This app is inaccurate. I dont know what the general contractor was thinking when he used it to hang a garage door. He needs to check it because it had me off by 8 inches. I had to log on to handy math just to get the right arc length. When you calculate the height being half the span it gives you a central angle of 160.bs. Maybe on Mars but on earth its 180. Dont waste your money!
Anthony Escamilla about
Radius Calculator