Magneto-inertial range dominated by magnetic helicity has been studied using results of the numerical simulations, laboratory measurements, solar, solar wind, and Earth's magnetosphere observations (spacecraft measurements). The spectral data have been compared with the theoretical results obtained on the basis of the distributed chaos notion in the frames of the Kolmogorov-Iroshnikov phenomenology. The transition from magnetohydrodynamics to kinetics in the solar wind and at the special events (reconnection and Kelvin-Helmholtz instability) in Earth's magnetosphere has been discussed in this context.