This short communication presented the calibration analysis methods and results of calculation formulas for shear capacities of corroded RC beams. A dataset was established which involved shear tests on 93 non-corroded control and 326 corroded RC beams with corroded longitudinal steel bars, stirrups and/or bent steel bars. Then, the generalized calibration method for calculation formulas of shear capacities of corroded RC beams was proposed. Based on the shear capacity calculation formulas for non-corroded RC beams specified by the Chinese code, the corrosion-induced reduction functions for the concrete contribution term, stirrups contribution term and bent steel bars contribution term were calibrated with test results collected in the dataset. After that, the recommended reduction functions were proposed and the corresponding recommended shear capacity calculation formulas were found reliably conservative. The calibration results were dependent on the specific shear capacity calculation formulas for non-corroded RC beams. Nevertheless, the dataset is available to all readers upon request to allow them to calibrate their own calculation formulas for shear capacities of corroded RC beams. The recommended shear capacity calculation formulas could help reliable safety assessments of existing RC structures.