Nephrology · Internal Medicine

BUN mmol/L to mg/dL calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Urea (mmol/L)

mg/dL

Allowed range: 1.4–196.08 mg/dL

Result

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Clinical inputs

Urea (mmol/L)Accepted range: 0.5 to 70

Primary source

Labcorp SI Unit Conversion Table (Conventional to SI / SI to Conventional columns). Urea nitrogen, blood (BUN): mmol/L × 2.80 = mg/dL. This calculator multiplies urea (urea nitrogen) in mmol/L by 2.801 (28.01 g of nitrogen per mole of urea) to give BUN in mg/dL. (2026)

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