Femtowatt is 1e-15 watt units.
Femtowatts to Picowatts Converter — fW to pW
Convert Femtowatt (fW) to Picowatt (pW) using the exact conversion factor (1 femtowatt = 0.001 picowatt). See the formula, worked examples, and conversion table.
Femtowatts to Picowatts 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.
Picowatt is 1e-12 watt units.
Result = input x 1e-15 / 1e-12.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Femtowatts to Picowatts
Femtowatt and Picowatt 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 picowatt is 1e-12 watt units.
Formula
picowatts = femtowatts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 femtowatt equals 1e-15 base units, and 1 picowatt equals 1e-12 base units, so dividing one by the other gives the direct femtowatt-to-picowatt factor of 0.001.
Simple example
1 fW × 0.001 = 0.001 pW
1 femtowatt = 0.001 picowatts.
Real-world example
120 fW × 0.001 = 0.12 pW
120 femtowatts = 0.12 picowatts.
Conversion table
| Femtowatt (fW) | Picowatt (pW) |
|---|---|
| 1 fW | 0.001 pW |
| 5 fW | 0.005 pW |
| 12 fW | 0.012 pW |
| 24 fW | 0.024 pW |
| 120 fW | 0.12 pW |
| 240 fW | 0.24 pW |
Reverse conversion: Picowatt to Femtowatt
0.001 pW × 1000 = 1 fW
0.001 picowatts = 1 femtowatt.
femtowatts = picowatts × 1000
For a page dedicated to this direction, see Picowatt to Femtowatt.
Understanding the Femtowatt (fW)
Femtowatt is 1e-15 watt units.
Understanding the Picowatt (pW)
Picowatt is 1e-12 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picowatts are in 1 femtowatt?
1 femtowatt equals 0.001 picowatts, using the exact defined conversion factor rather than an estimate.
How do I convert femtowatt to picowatt?
Multiply the femtowatt value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert picowatt back to femtowatt?
Use the reverse factor: 1 picowatt equals 1,000 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 picowatt?
Picowatt (pW) is a unit of electricity.
Is the femtowatt to picowatt conversion exact?
Yes. Both femtowatt and picowatt are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.