BED Calculator
Result
BED Calculator Calculate the Biologically Effective Dose (BED) for radiation therapy to compare fractionation schemes. — free online calculator.
Formula
- BED Calculator calculates its result from Total dose D (Gy), Dose per fraction d (Gy), Alpha/Beta ratio. It uses the formula BED = D × (1 + d/α/β); EQD2 = BED ÷ (1 + 2/α/β). Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Total dose D, Dose per fraction d, Alpha/Beta ratio. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: BED
- Total dose D: 60 Gy
- Dose per fraction d: 2 Gy
- Alpha/Beta ratio: 10
Using Total dose D (Gy) = 60, Dose per fraction d (Gy) = 2, Alpha/Beta ratio = 10, the calculated result is BED: 72 | EQD2: 60.
Sample result: Calculating…
Frequently asked questions
What does the BED calculate?
BED Calculator Calculate the Biologically Effective Dose (BED) for radiation therapy to compare fractionation schemes. — free online calculator.
Which values should I enter?
Enter Total dose D, Dose per fraction d, Alpha/Beta ratio using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: BED = D × (1 + d/α/β); EQD2 = BED ÷ (1 + 2/α/β).
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.