Serum Osmolality Calculator

Calculate serum osmolality and osmol gap

Enter the sodium value for this calculation.
mEq/L
Enter the glucose value for this calculation.
mg/dL
Enter the bun value for this calculation.
mg/dL
Enter the measured osmolality value for this calculation.
mOsm/kg

Results

Calculated Osmolality:
Calculated calculated osmolality based on your inputs.
-mOsm/kg
Osmol Gap:
Calculated osmol gap based on your inputs.
-mOsm/kg
Reference: Industry Standards.