Femtowatt is 1e-15 watt units.
Femtowatts to Decawatts Converter — fW to daW
Convert Femtowatt (fW) to Decawatt (daW) using the exact conversion factor (1 femtowatt = 1e-16 decawatt). See the formula, worked examples, and conversion table.
Femtowatts to Decawatts converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Decawatt is 10 watt units.
Result = input x 1e-15 / 10.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Femtowatts to Decawatts
Femtowatt and Decawatt both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Femtowatt is 1e-15 watt units, and decawatt is 10 watt units.
Formula
decawatts = femtowatts × 1e-16
This factor comes from each unit's defined relationship to the category's base unit: 1 femtowatt equals 1e-15 base units, and 1 decawatt equals 10 base units, so dividing one by the other gives the direct femtowatt-to-decawatt factor of 1e-16.
Simple example
1 fW × 1e-16 = 1e-16 daW
1 femtowatt = 1e-16 decawatts.
Real-world example
120 fW × 1e-16 = 1.2e-14 daW
120 femtowatts = 1.2e-14 decawatts.
Conversion table
| Femtowatt (fW) | Decawatt (daW) |
|---|---|
| 1 fW | 1e-16 daW |
| 5 fW | 5e-16 daW |
| 12 fW | 1.2e-15 daW |
| 24 fW | 2.4e-15 daW |
| 120 fW | 1.2e-14 daW |
| 240 fW | 2.4e-14 daW |
Reverse conversion: Decawatt to Femtowatt
1e-16 daW × 1e+16 = 1 fW
1e-16 decawatts = 1 femtowatt.
femtowatts = decawatts × 1e+16
For a page dedicated to this direction, see Decawatt to Femtowatt.
Understanding the Femtowatt (fW)
Femtowatt is 1e-15 watt units.
Understanding the Decawatt (daW)
Decawatt is 10 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decawatts are in 1 femtowatt?
1 femtowatt equals 1e-16 decawatts, using the exact defined conversion factor rather than an estimate.
How do I convert femtowatt to decawatt?
Multiply the femtowatt value by 1e-16. The converter above does this instantly to whatever precision you set.
How do I convert decawatt back to femtowatt?
Use the reverse factor: 1 decawatt equals 1e+16 femtowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtowatt?
Femtowatt (fW) is a unit of electricity.
What is a decawatt?
Decawatt (daW) is a unit of electricity.
Is the femtowatt to decawatt conversion exact?
Yes. Both femtowatt and decawatt are defined by fixed standards rather than physical artifacts, so the factor of 1e-16 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.