Metric rectification has important applications to topics such as single-view metrology, camera calibration, optical character recognition and texture extraction or synthesis. This paper proposes a method for estimating the rectification homography of a world plane that pertains to a single view containing the images of at least two circles in general position. The method does not presuppose that the circles radii, the camera's intrinsics or the plane's vanishing line are known and can simultaneously accommodate multiple circles. Comparative experimental results demonstrate the approach's efficacy.