Total reaction cross sections of deuteron, $sigma_d^{rm R}$, are calculated by a microscopic three-body reaction model. The reaction model has no free adjustable parameter and applicable to reactions at various deuteron incident energies $E_d$ and with both stable and unstable nuclei. The predicted $sigma_d^{rm R}$ are consistent with those evaluated by a phenomenological optical potential for $E_dleq 200$ MeV in which the potential has been parametrized. A simple formula of $sigma_d^{rm R}$ up to $E_d=1$ GeV, as a function of $E_d$, the target mass number $A$ and its atomic number $Z$, is given.
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