Femtowatts to Attowatts
Convert Femtowatts to Attowatts instantly. Free online power unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Femtowatts to Attowatts conversions.
Reserved above the conversion cards and below the converter.
Formula
aW = fW × 1000
fW = aW × 0.001
Conversion table
| 1 fW | 1000 aW |
| 5 fW | 5000 aW |
| 10 fW | 10000 aW |
| 20 fW | 20000 aW |
| 50 fW | 50000 aW |
| 100 fW | 100000 aW |
| 500 fW | 500000 aW |
| 1000 fW | 1000000 aW |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the femtowatt (fW). A femtowatt is 1e-15 watt units.
What is the destination unit in this conversion?
The destination unit is the attowatt (aW). A attowatt is 1e-18 watt units.
How do I convert femtowatts to attowatts?
Multiply the femtowatt value by 1000 to get attowatt. For example, 1 fW × 1000 = 1000 aW.
Is the femtowatts to attowatts conversion exact?
Yes. Both units are defined by fixed numeric relationships to the watt, so the conversion factor used here, 1000, is exact.
Where is this conversion commonly used?
It is used when comparing power ratings expressed in femtowatts against equipment, engines, or specifications rated in attowatts.
Can I convert attowatts back to femtowatts?
Yes. Multiply the attowatt value by 0.001 to get femtowatt.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts femtowatts (fW) into attowatts (aW), two units used to describe power, the rate at which energy is transferred or work is done.
A femtowatt is 1e-15 watt units.
A attowatt is 1e-18 watt units.
The formula is aW = fW × 1000, derived from each unit's fixed relationship to the watt, the SI unit of power.
Because both units are defined by exact numeric relationships to the watt, this conversion is exact rather than approximate.