How to Convert Roentgens to Grays
To convert roentgens to grays, divide the value by 114.025.
The Formula
Grays = Roentgens ÷ 114.025
Key Fact
1 gray = 114.025 roentgens
Tip: To convert grays back to roentgens, multiply by 114.025.
Roentgens to Grays
Convert roentgens (R) to grays (Gy) with formulas, examples, and conversion tables.
R
Gy
1 R = 0.00877 Gy
Full precision:0.00877 Gy
Step-by-Step Solution
To convert 1 roentgens to grays, we divide by 114.025 because one gray equals exactly 114.025 roentgens.
1 gray = 114.025 roentgens
Since there are 114.025 roentgens in every gray, we divide our value by this factor:
1 ÷ 114.025 = 0.00877 grays
So 1 roentgens = 0.00877 grays.
Quick check: 0.00877 × 114.025 = 1 roentgens
Example Conversions
Example 1: 1 R = 0.00877 Gy
1 ÷ 114.025 = 0.00877
1 ÷ 114.025 = 0.00877
Example 2: 5 R = 0.04385 Gy
5 ÷ 114.025 = 0.04385
5 ÷ 114.025 = 0.04385
Example 3: 10 R = 0.0877 Gy
10 ÷ 114.025 = 0.0877
10 ÷ 114.025 = 0.0877
Roentgens to Grays Table
| Roentgens | Grays |
|---|---|
| 1 R | 0.00877 Gy |
| 2 R | 0.01754 Gy |
| 5 R | 0.04385 Gy |
| 10 R | 0.0877 Gy |
| 20 R | 0.1754 Gy |
| 25 R | 0.21925 Gy |
| 50 R | 0.4385 Gy |
| 100 R | 0.877 Gy |
| 250 R | 2.1925 Gy |
| 500 R | 4.385 Gy |
| 1000 R | 8.77 Gy |
1 Roentgen in Other Units
| Unit | 1 R = |
|---|---|
| Roentgens to Sieverts | 0.00877 Sv |
| Roentgens to Millisieverts | 8.77 mSv |
| Roentgens to Microsieverts | 8770 μSv |
| Roentgens to Rems | 0.877 rem |
| Roentgens to Millirems | 877 mrem |
| Roentgens to Grays | 0.00877 Gy |
| Roentgens to Milligrays | 8.77 mGy |
| Roentgens to Rads | 0.877 rad |