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BUN/Urea Converter

Convert between blood urea nitrogen (BUN) and urea in different units.

Clinical Chemistry Renal #renal-function #bun #urea #converter
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Formula & Clinical Notes

Formula

BUN (mg/dL) = Urea (mg/dL) / 2.1428 · Urea (mmol/L) = BUN (mg/dL) × 0.357

Clinical Notes

Urea contains two nitrogen atoms; blood urea nitrogen (BUN) is the nitrogen fraction of urea. BUN (mg/dL) = Urea (mg/dL) / 2.1428 and Urea (mmol/L) = BUN (mg/dL) × 0.357. Normal BUN is roughly 7–20 mg/dL (2.5–7.1 mmol/L urea).

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