BSA Calculator – Body Surface Area Calculator 2025
To find your body surface area, multiply your height by your weight, divide by 3600, and then take the square root of that number.
Formula:
BSA = √(H × W ÷ 3600)
Table of Variables
| Variable | Meaning |
|---|---|
| BSA | Body Surface Area (m²) |
| H | Height (in cm) |
| W | Weight (in kg) |
What is a BSA Calculator: Let’s Understand & Calculate The Body Surface Area, Know Its Importance In Medication Dosage Calculations
Think of your body as having a skin-sized footprint. That’s your body surface area (BSA) — and the BSA Calculator figures it out in seconds. It’s often used in medicine to decide drug dosages, especially in oncology and chemotherapy, where accuracy matters a lot. Instead of guessing, this tool gives you a safe and solid number.
There are different formulas like DuBois, Mosteller, and Halls, each slightly tweaking how height and weight are used. Whether you’re using a pediatric BSA calculator for kids or a version like the MDCalc or eviQ BSA calculator for clinical dosing, this tool adapts to your needs.
Planning treatment for psoriasis, burns, or atopic dermatitis? The BSA calculator also supports skin-related assessments. Need something for dogs or for chemopet dosing? It’s got that too. So whether you’re figuring out BSA for a 70kg adult, a child, or even a pet, this calculator takes the guesswork out of the equation.
