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One of the prevalent methods to increase the network lifetime is to develop uniformity in the sensor node distribution and load balancing. The existing criteria to calculate uniformity are only able to locally or globally measure the uniformity of sensor distribution in the network. In this paper, a new criterion is proposed for uniformity measurement of sensor distribution. It can calculate both global and local uniformity in various levels of node distribution. Moreover, using the model of sensing area of each sensor, this criterion has been generalized for the uniformity measurement of energy distribution in the network via calculating the uniformity of sensor node distribution. Therefore, it becomes applicable for measurement of the area coverage. In order to assess the performance of the proposed criterion, a set of sensor distribution patterns has been utilized and uniformity calculation results of these patterns have been studied.