Loading…
Mosteller and Du Bois BSA from height and weight.
BSA is used for drug dosing and, in breast reduction, the Schnur sliding scale relates BSA to the minimum resection weight per breast at the 22nd percentile — a common proxy for medical necessity. The estimate shown is interpolated from the published 22% table. Always defer to the patient's own insurer or local Schnur table. Education only.
Mosteller BSA
1.82
m²
√((height × weight) / 3600)
Du Bois BSA
1.81 m²
0.007184 × height^0.725 × weight^0.425
Schnur minimum resection / breast
456 g
22nd-percentile threshold at 1.82 m² (Mosteller BSA)
Body surface area estimates the total external area of the body and is widely used to standardise drug dosing and physiological parameters. The Mosteller formula is the simplest; Du Bois is a classic alternative.
Mosteller BSA = √((height cm × weight kg) / 3600). Du Bois BSA = 0.007184 × height^0.725 × weight^0.425. Both give similar values for typical adults.
In breast reduction, the Schnur sliding scale links BSA to a minimum resection weight per breast, often used for medical-necessity criteria. Use your local or insurer's Schnur table for the gram thresholds.
Education only — confirm against the relevant chart and local protocol.