attogray to hectogray
Convert attogray (aGy) to hectogray (hGy). Use an editable absorbed dose converter, conversion formula, and reference table.
1 aGy = 1e-20 hGy
Conversion formula
One attogray equals 1e-20 hectogray. Multiply your value in attogray by this factor to get hectogray. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 attogray:5 × 1e-20 = 5e-20 hGy
Conversion table
| attogray (aGy) | hectogray (hGy) |
|---|---|
| 0.01 | 1e-22 |
| 0.1 | 1e-21 |
| 1 | 1e-20 |
| 2 | 2e-20 |
| 5 | 5e-20 |
| 10 | 1e-19 |
| 25 | 2.5e-19 |
| 50 | 5e-19 |
| 100 | 1e-18 |
| 1000 | 1e-17 |
About these measurements
Absorbed dose measures energy deposited per unit mass.
The base reference used here is the gray. One attogray is 1e-18 base units; one hectogray is 100 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 aGy to hGy?
Multiply the quantity in aGy by 1e-20. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the hectogray to attogray 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.
