megagray to picogray
Convert megagray (MGy) to picogray (pGy). Use an editable absorbed dose converter, conversion formula, and reference table.
1 MGy = 1e+18 pGy
Conversion formula
One megagray equals 1e+18 picogray. Multiply your value in megagray by this factor to get picogray. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 megagray:5 × 1e+18 = 5e+18 pGy
Conversion table
| megagray (MGy) | picogray (pGy) |
|---|---|
| 0.01 | 1e+16 |
| 0.1 | 1e+17 |
| 1 | 1e+18 |
| 2 | 2e+18 |
| 5 | 5e+18 |
| 10 | 1e+19 |
| 25 | 2.5e+19 |
| 50 | 5e+19 |
| 100 | 1e+20 |
| 1000 | 1e+21 |
About these measurements
Absorbed dose measures energy deposited per unit mass.
The base reference used here is the gray. One megagray is 1,000,000 base units; one picogray is 1e-12 base units.
Important distinctions
Physical unit conversion only. Biological effect requires additional information and professional assessment.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert MGy to pGy?
Multiply the quantity in MGy by 1e+18. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the picogray to megagray converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
