Equivalent Dose Calculator
☢ Nuclear & Decay. Use the Equivalent dose formula to find equivalent dose, absorbed dose, quality factor: pick the value you want, type the others, and the answer updates as you go.
Q: 1 for γ/β, 20 for α particles.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Equivalent dose | Sv |
| Absorbed dose | Gy |
| Quality factor | no unit |
Worked example
Find the equivalent dose when Absorbed dose = 0.01 Gy, Quality factor = 20.
Using H = D × Q: Equivalent dose = 0.2 Sv.
Frequently asked questions
What is the formula for Equivalent dose?
H = D × Q. Q: 1 for γ/β, 20 for α particles.
What do the letters stand for, and what units are used?
Equivalent dose in Sv, Absorbed dose in Gy, Quality factor.
How do you calculate equivalent dose?
Put the values into H = D × Q. For example, with Absorbed dose = 0.01 Gy, Quality factor = 20, equivalent dose = 0.2 Sv.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (equivalent dose, absorbed dose, quality factor) and fill in the others: it rearranges the formula for you.
