To convert from mg/dL to mmol/L using a molecular weight of 113, use this formula:

mmol/L = mg/dL / 113

For example, if the creatinine level is 1 mg/dL, then the corresponding creatinine level in mmol/L would be:

mmol/L = 1 mg/dL / 113 = 0.00885 mmol/L