Serum Osmolality Calculator
Sodium (Na⁺)
mEq/L
Please enter a valid sodium level.
Glucose
mg/dL
Please enter a valid glucose level.
BUN
mg/dL
Please enter a valid BUN level.
Calculate
Serum Osmolality
Formula: 2 × Na⁺ + Glucose/18 + BUN/2.8