Osmolarity Calculator
Enter the concentrations of solutes in mmol/L to calculate total osmolarity.
Sodium (Na+)
Please enter a valid number.
Potassium (K+)
Please enter a valid number.
Chloride (Cl-)
Please enter a valid number.
Bicarbonate (HCO3-)
Please enter a valid number.
Glucose (mg/dL)
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BUN (mg/dL)
Please enter a valid number.
Calculate Osmolarity
Result
0
mOsm/L
Formula: 2 × Na + Glucose/18 + BUN/2.8