BSA Dosage Calculator (Body Surface Area)

BSA Dosage Calculator (Body Surface Area) is evaluated from Weight, Height and Dose per m^2. The calculation reports BSA, Single Dose and Total Dose.

Results

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About the BSA Dosage Calculator (Body Surface Area)

BSA Dosage Calculator (Body Surface Area) is treated here as a quantitative relation between Weight, Height, Dose per m^2 and Doses per Cycle/Day and BSA, Single Dose, Total Dose and BSA Category.

The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.

Formula basis:
BSA (Mosteller) = sqrt(height_cm x weight_kg / 3600)
Single Dose (mg) = BSA (m^2) x Dose per m^2 (mg/m^2)
Total Dose = Single Dose x Doses per Cycle

Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.

Formula & How It Works

The calculation applies the following relations exactly as recorded in the metadata:

BSA (Mosteller) = sqrt(height_cm x weight_kg / 3600)
Single Dose (mg) = BSA (m^2) x Dose per m^2 (mg/m^2)
Total Dose = Single Dose x Doses per Cycle

Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.

Worked Examples

Example 1: Paclitaxel for Breast Cancer — 65 kg Female, 165 cm

Inputs

weight_kg: 65 height_cm: 165 dose_per_m2: 175 doses_per_day: 1
BSA: 1.73 m^2. Single Dose: 302.1 mg. Total Dose: 302.1 mg. BSA Category: Average (1.7-1.99 m**2) - typical adult range

With Weight = 65, Height = 165, Dose per m^2 = 175 and Doses per Cycle/Day = 1 as the stated inputs, the result is BSA = 1.73 m^2, Single Dose = 302.1 mg and Total Dose = 302.1 mg. Each value corresponds to the declared output fields.

Example 2: Cisplatin for NSCLC — 80 kg Male, 178 cm

Inputs

weight_kg: 80 height_cm: 178 dose_per_m2: 75 doses_per_day: 1
BSA: 1.99 m^2. Single Dose: 149.2 mg. Total Dose: 149.2 mg. BSA Category: Average (1.7-1.99 m**2) - typical adult range

With Weight = 80, Height = 178, Dose per m^2 = 75 and Doses per Cycle/Day = 1 as the stated inputs, the result is BSA = 1.99 m^2, Single Dose = 149.2 mg and Total Dose = 149.2 mg. Each value corresponds to the declared output fields.

Example 3: Pediatric Methotrexate — 30 kg Child, 120 cm

Inputs

weight_kg: 30 height_cm: 120 dose_per_m2: 3000 doses_per_day: 1
BSA: 1 m^2. Single Dose: 3,000 mg. Total Dose: 3,000 mg. BSA Category: Small (< 1.5 m**2) - verify dose with oncology pharmacist

With Weight = 30, Height = 120, Dose per m^2 = 3,000 and Doses per Cycle/Day = 1 as the stated inputs, the result is BSA = 1 m^2, Single Dose = 3,000 mg and Total Dose = 3,000 mg. Each value corresponds to the declared output fields.

Example 4: 5-Fluorouracil for Colorectal Cancer — 75 kg, 170 cm

Inputs

weight_kg: 75 height_cm: 170 dose_per_m2: 400 doses_per_day: 1
BSA: 1.88 m^2. Single Dose: 752.8 mg. Total Dose: 752.8 mg. BSA Category: Average (1.7-1.99 m**2) - typical adult range

With Weight = 75, Height = 170, Dose per m^2 = 400 and Doses per Cycle/Day = 1 as the stated inputs, the result is BSA = 1.88 m^2, Single Dose = 752.8 mg and Total Dose = 752.8 mg. Each value corresponds to the declared output fields.

Common Use Cases

  • Calculate chemotherapy dose from BSA
  • Determine carboplatin and cisplatin dosing
  • Compute methotrexate dose for rheumatology
  • Calculate BSA for pediatric oncology dosing