Attowatt is 1e-18 watt units.
Attowatts to Yoctowatts Converter — aW to yW
Convert Attowatt (aW) to Yoctowatt (yW) using the exact conversion factor (1 attowatt = 1,000,000 yoctowatt). See the formula, worked examples, and conversion table.
Attowatts to Yoctowatts converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
Yoctowatt is 1e-24 watt units.
Result = input x 1e-18 / 1e-24.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Attowatts to Yoctowatts
Attowatt and Yoctowatt both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Specifically: Attowatt is 1e-18 watt units, and yoctowatt is 1e-24 watt units.
Formula
yoctowatts = attowatts × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 attowatt equals 1e-18 base units, and 1 yoctowatt equals 1e-24 base units, so dividing one by the other gives the direct attowatt-to-yoctowatt factor of 1000000.
Simple example
1 aW × 1000000 = 1,000,000 yW
1 attowatt = 1,000,000 yoctowatts.
Real-world example
100 aW × 1000000 = 100,000,000 yW
100 attowatts = 100,000,000 yoctowatts.
Conversion table
| Attowatt (aW) | Yoctowatt (yW) |
|---|---|
| 1 aW | 1,000,000 yW |
| 10 aW | 10,000,000 yW |
| 100 aW | 100,000,000 yW |
| 500 aW | 500,000,000 yW |
| 1,000 aW | 1,000,000,000 yW |
| 5,000 aW | 5,000,000,000 yW |
Reverse conversion: Yoctowatt to Attowatt
1 yW × 0.000001 = 0.000001 aW
1 yoctowatt = 0.000001 attowatts.
attowatts = yoctowatts × 0.000001
For a page dedicated to this direction, see Yoctowatt to Attowatt.
Understanding the Attowatt (aW)
Attowatt is 1e-18 watt units.
Understanding the Yoctowatt (yW)
Yoctowatt is 1e-24 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctowatts are in 1 attowatt?
1 attowatt equals 1,000,000 yoctowatts, using the exact defined conversion factor rather than an estimate.
How do I convert attowatt to yoctowatt?
Multiply the attowatt value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert yoctowatt back to attowatt?
Use the reverse factor: 1 yoctowatt equals 0.000001 attowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a attowatt?
Attowatt (aW) is a unit of power.
What is a yoctowatt?
Yoctowatt (yW) is a unit of power.
Is the attowatt to yoctowatt conversion exact?
Yes. Both attowatt and yoctowatt 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.