Transfusion Units for Hb Target

Validated formulas only — every calculator lists its formula and source.

Approximate PRBC units to reach a target Hb at term blood volume.

Weight (kg)Current Hb (g/dL)Target Hb (g/dL)

Formula/source: Standard transfusion arithmetic (blood volume ~8% body weight; unit yield ~1.4 g/dL).