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Both calculators run independently — change the inputs on either side to compare results.

Medication Dosage Calculator

Calculate a weight-based medication dose adjusted for patient age and kidney function. Useful for clinicians and pharmacists when standard dosing requires renal or geriatric modifications.

Patient Weight (kg)

Standard Dose (mg/kg)

Serum Creatinine (mg/dL)

Patient Age (years)

Renal Adjustment Factor

Fill in the required fields to see your result.

Medicine

Body Surface Area Calculator

Calculate body surface area (BSA) in m² using the Mosteller, Du Bois or Haycock formula from your weight and height. Clinicians use BSA to dose chemotherapy, normalise cardiac index and estimate burn coverage.

Weight (kg)

Height (cm)

BSA Formula

Fill in the required fields to see your result.

Key differences

	Medication Dosage Calculator	Body Surface Area Calculator
Category	Medicine	Medicine
Inputs required	5	3
Result	Adjusted Dose (mg)	Body Surface Area (m²)
What it does	Calculate a weight-based medication dose adjusted for patient age and kidney function. Useful for clinicians and pharmacists when standard dosing requires renal or geriatric modifications.	Calculate body surface area (BSA) in m² using the Mosteller, Du Bois or Haycock formula from your weight and height. Clinicians use BSA to dose chemotherapy, normalise cardiac index and estimate burn coverage.