Half-value layer (cm) to per centimeter
Type a value in HVL cm to get it in cm⁻¹ instantly.
0.1136cm⁻¹
That's about the same as concrete (Co-60). Cutting the beam a thousandfold takes about 60.79 cm of it.
Convert the other way: cm⁻¹ to HVL cm
What it means
How strong a shield is that?
Narrow-beam attenuation. Real shields let through more because of scattered radiation (build-up); design shielding to the relevant standards.
The math
How to convert HVL cm to cm⁻¹
HVL = ln 2 ÷ μ = 0.693 ÷ μ; TVL = ln 10 ÷ μ = 2.303 ÷ μ.
Example: 6.1 HVL cm = 0.113631 cm⁻¹.
Every unit
That shielding in every unit
Tables
HVL cm to cm⁻¹ conversion table
| HVL cm | cm⁻¹ |
|---|---|
| 0.01 HVL cm | 69.3147 cm⁻¹ |
| 0.025 HVL cm | 27.7259 cm⁻¹ |
| 0.05 HVL cm | 13.8629 cm⁻¹ |
| 0.1 HVL cm | 6.93147 cm⁻¹ |
| 0.25 HVL cm | 2.77259 cm⁻¹ |
| 0.48 HVL cm | 1.44406 cm⁻¹ |
| 1 HVL cm | 0.693147 cm⁻¹ |
| 1.2 HVL cm | 0.577623 cm⁻¹ |
| 2 HVL cm | 0.346574 cm⁻¹ |
| 4.8 HVL cm | 0.144406 cm⁻¹ |
| 6.1 HVL cm | 0.113631 cm⁻¹ |
| 10 HVL cm | 0.0693147 cm⁻¹ |
| 11 HVL cm | 0.0630134 cm⁻¹ |
cm⁻¹ to HVL cm conversion table
| cm⁻¹ | HVL cm |
|---|---|
| 0.063 cm⁻¹ | 11.0023 HVL cm |
| 0.0693 cm⁻¹ | 10.0021 HVL cm |
| 0.114 cm⁻¹ | 6.08024 HVL cm |
| 0.144 cm⁻¹ | 4.81352 HVL cm |
| 0.347 cm⁻¹ | 1.99754 HVL cm |
| 0.578 cm⁻¹ | 1.19922 HVL cm |
| 0.693 cm⁻¹ | 1.00021 HVL cm |
| 1.44 cm⁻¹ | 0.481352 HVL cm |
| 2.77 cm⁻¹ | 0.250234 HVL cm |
| 6.93 cm⁻¹ | 0.100021 HVL cm |
| 13.9 cm⁻¹ | 0.0498667 HVL cm |
| 27.7 cm⁻¹ | 0.0250234 HVL cm |
| 69.3 cm⁻¹ | 0.0100021 HVL cm |
Quick answers
Quick answers
- How many cm⁻¹ is 1 HVL cm?
- 1 HVL cm is 0.693147 cm⁻¹.
- How many cm⁻¹ is 10 HVL cm?
- 10 HVL cm is 0.0693147 cm⁻¹.
- How many cm⁻¹ is 6.1 HVL cm?
- 6.1 HVL cm is 0.113631 cm⁻¹.
The units
About these units
Half-value layer (cm) (HVL cm)
Thickness that halves the beam, in cm.
Per centimeter (cm⁻¹)
Linear attenuation coefficient in cm⁻¹.
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