Picogray is 1e-12 gray units.
Picograys to Attograys Converter — pGy to aGy
Convert Picogray (pGy) to Attogray (aGy) using the exact conversion factor (1 picogray = 1,000,000 attogray). See the formula, worked examples, and conversion table.
Picograys to Attograys converter
Converter
Radiation Converter
Convert radioactivity, absorbed dose, and equivalent dose units by compatible radiation family.
Context values
Some unit families need one extra value for a physically accurate result.
Attogray is 1e-18 gray units.
Result = input x 1e-12 / 1e-18.
Absorbed Dose units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Picograys to Attograys
Picogray and Attogray both belong to the radiation-measurement family, though radiation quantities fall into genuinely distinct categories: absorbed dose (gray, rad) measures energy deposited in matter, equivalent dose (sievert, rem) weights that for biological harm, and activity (becquerel, curie) measures how often a radioactive source decays — this page only converts between units of the same kind. Specifically: Picogray is 1e-12 gray units, and attogray is 1e-18 gray units.
Formula
attograys = picograys × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 picogray equals 1e-12 base units, and 1 attogray equals 1e-18 base units, so dividing one by the other gives the direct picogray-to-attogray factor of 1000000.
Simple example
1 pGy × 1000000 = 1,000,000 aGy
1 picogray = 1,000,000 attograys.
Real-world example
10 pGy × 1000000 = 10,000,000 aGy
10 picograys = 10,000,000 attograys.
Conversion table
| Picogray (pGy) | Attogray (aGy) |
|---|---|
| 0.001 pGy | 1,000 aGy |
| 0.01 pGy | 10,000 aGy |
| 0.1 pGy | 100,000 aGy |
| 1 pGy | 1,000,000 aGy |
| 10 pGy | 10,000,000 aGy |
| 100 pGy | 100,000,000 aGy |
Reverse conversion: Attogray to Picogray
1 aGy × 0.000001 = 0.000001 pGy
1 attogray = 0.000001 picograys.
picograys = attograys × 0.000001
For a page dedicated to this direction, see Attogray to Picogray.
Understanding the Picogray (pGy)
Picogray is 1e-12 gray units.
Understanding the Attogray (aGy)
Attogray is 1e-18 gray units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attograys are in 1 picogray?
1 picogray equals 1,000,000 attograys, using the exact defined conversion factor rather than an estimate.
How do I convert picogray to attogray?
Multiply the picogray value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert attogray back to picogray?
Use the reverse factor: 1 attogray equals 0.000001 picograys. You can also use the swap control in the converter above to flip the direction instantly.
What is a picogray?
Picogray (pGy) is a unit of radiation.
What is a attogray?
Attogray (aGy) is a unit of radiation.
Is the picogray to attogray conversion exact?
Yes. Both picogray and attogray are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.
What's the difference between absorbed dose, equivalent dose, and activity?
Absorbed dose (gray, rad) measures the energy radiation deposits in matter. Equivalent dose (sievert, rem) adjusts that figure for how harmful different types of radiation are to biological tissue. Activity (becquerel, curie) measures how often a radioactive source decays, independent of how much dose a person actually receives from it.