Convert Roentgen to Microsievert
Enter the number of roentgens that you want to convert to microsieverts.
How to Convert Roentgens to Microsieverts
The roentgen and microsievert are both units of radiation dose. By definition, 1 roentgen equals exactly 8770 microsieverts. This means to convert roentgens to microsieverts, you multiply by 8770.
Formula
Step-by-Step Example
Convert 5 R to microsieverts:
We need to convert roentgens to microsieverts
Since 1 R = 8770 μSv, multiply by 8770
5 × 8770 = 43850
5 R = 43850 μSv
Roentgen to Microsievert Conversion Table
Quick reference table for common roentgen to microsievert conversions. Click any value for detailed calculation.
| Roentgens (R) | Microsieverts (μSv) |
|---|---|
| 0.1 R | 877 μSv |
| 0.5 R | 4385 μSv |
| 1 R | 8770 μSv |
| 2 R | 17540 μSv |
| 5 R | 43850 μSv |
| 10 R | 87700 μSv |
| 25 R | 219250 μSv |
| 50 R | 438500 μSv |
| 100 R | 877000 μSv |
About These Units
Roentgen (R)
The roentgen (R) measures ionization produced by X-rays or gamma rays in air. One roentgen produces 2.58×10⁻⁴ C/kg of ionization. Approximately: 1 R ≈ 8.77 mGy or 0.877 rad in soft tissue. Named after Wilhelm Röntgen, discoverer of X-rays.
Microsievert (μSv)
A microsievert (μSv) equals 0.001 mSv or 0.1 mrem. Common exposures: dental X-ray ~5 μSv, chest X-ray 20 μSv, transatlantic flight 40-80 μSv, banana (K-40) 0.1 μSv. Most radiation meters display μSv/h for environmental monitoring.
Frequently Asked Questions
How do I convert roentgens to microsieverts?
To convert roentgens to microsieverts, multiply the value by 8770. For example, 10 R = 87700 μSv.
How many microsieverts are in 1 roentgen?
1 roentgen equals 8770 microsieverts.
What is the formula for roentgens to microsieverts?
The formula is: μSv = R × 8770.