Study of methods to measure stress has been continuously ongoing. As such, studies have continued because this is an issue that exists in the method of our lives, yet it is hard to solve. The concept of stress is yet to be certain, with diverse interpretations because the approach method is diverse. There are significant differences in individual stress reactions, and several factors are involved. It is necessary to express stress in simple figures and to find out about it easily on a personal level. Consequently, this paper suggests the algorithms to express stress index on the base of a statistics data and a measurement tool which is used in the specific group.