The present disclosure relates to interactive systems and methods for dimensioning with a mobile device. The mobile device can include an accelerometer, imager, and a corresponding algorithm configured to compute dimensions based on a plurality of inputs from the accelerometer, imager, etc. Specifically, the accelerometer allows the mobile device to measure acceleration and time, and the algorithm is configured to convert these measurements into distances. Additionally, with a three-axis accelerometer, the user can move the device off an axis being measured and still receive an accurate measurement, i.e. the algorithm can compensate for off-axis movement. Further, the present invention can incorporate an imager on the mobile device to provide additional compensation supplementing the algorithm and allowing the user additional freedom to be positioned away from the starting and end-point of a measurement.