698.05 MULTIPLE SENTENCES.
(a) Except as provided in division (b) of this section, division (E) of Section 2929.14, or division (D) or (E) of Section 2971.03 of the Ohio Revised Code, a prison term, jail term, or sentence of imprisonment shall be served concurrently with any other prison term, jail term, or sentence of imprisonment imposed by a court of this state, another state, or the United States. Except as provided in division (b)(3) of this section, a jail term or sentence of imprisonment for misdemeanor shall be served concurrently with a prison term or sentence of imprisonment for felony served in a state or federal correctional institution.
(b) (1) A jail term or sentence of imprisonment for a misdemeanor shall be served consecutively to any other prison term, jail term or sentence of imprisonment when the trial court specifies that it is to be served consecutively, or when it is imposed for a misdemeanor violation of Section 2907.322, 2921.34, or 2923.131 of the Ohio Revised Code.
When consecutive sentences are imposed for misdemeanor under this division, the term to be served is the aggregate of the consecutive terms imposed, except that the aggregate term to be served shall not exceed eighteen months.
(2) If a court of this state imposes a prison term upon the offender for the commission of a felony and a court of another state or the United States also has imposed a prison term upon the offender for the commission of a felony, the court of this state may order that the offender serve the prison term it imposes consecutively to any prison term imposed upon the offender by the court of another state or the United States.
(3) A jail term or sentence of imprisonment imposed for a misdemeanor violation of Section 4510.11, 4510.14, 4510.16, 4510.21, or 4511.19 of the Ohio Revised Code shall be served consecutively to a prison term that is imposed for a felony violation of Section 2903.06, 2903.07, 2903.08, or 4511.19 of the Ohio Revised Code or a felony violation of Section 2903.04 of the Ohio Revised Code involving the operation of a motor vehicle by the offender and that is served in a state correctional institution when the trial court specifies that it is to be served consecutively.
When consecutive jail terms or sentences of imprisonment and prison terms are imposed for one or more misdemeanors and one or more felonies under this division, the term to be served is the aggregate of the consecutive terms imposed, and the offender shall serve all terms imposed for a felony before serving any term imposed for a misdemeanor.
(ORC 2929.41)