Nanowatt is 1e-9 watt units.
Nanowatts to Femtowatts Converter — nW to fW
Convert Nanowatt (nW) to Femtowatt (fW) using the exact conversion factor (1 nanowatt = 1,000,000 femtowatt). See the formula, worked examples, and conversion table.
Nanowatts to Femtowatts converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Femtowatt is 1e-15 watt units.
Result = input x 1e-9 / 1e-15.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Nanowatts to Femtowatts
Nanowatt and Femtowatt both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Nanowatt is 1e-9 watt units, and femtowatt is 1e-15 watt units.
Formula
femtowatts = nanowatts × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 nanowatt equals 1e-9 base units, and 1 femtowatt equals 1e-15 base units, so dividing one by the other gives the direct nanowatt-to-femtowatt factor of 1000000.
Simple example
1 nW × 1000000 = 1,000,000 fW
1 nanowatt = 1,000,000 femtowatts.
Real-world example
100 nW × 1000000 = 100,000,000 fW
100 nanowatts = 100,000,000 femtowatts.
Conversion table
| Nanowatt (nW) | Femtowatt (fW) |
|---|---|
| 1 nW | 1,000,000 fW |
| 10 nW | 10,000,000 fW |
| 50 nW | 50,000,000 fW |
| 100 nW | 100,000,000 fW |
| 500 nW | 500,000,000 fW |
| 1,000 nW | 1,000,000,000 fW |
Reverse conversion: Femtowatt to Nanowatt
1 fW × 0.000001 = 0.000001 nW
1 femtowatt = 0.000001 nanowatts.
nanowatts = femtowatts × 0.000001
For a page dedicated to this direction, see Femtowatt to Nanowatt.
Understanding the Nanowatt (nW)
Nanowatt is 1e-9 watt units.
Understanding the Femtowatt (fW)
Femtowatt is 1e-15 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtowatts are in 1 nanowatt?
1 nanowatt equals 1,000,000 femtowatts, using the exact defined conversion factor rather than an estimate.
How do I convert nanowatt to femtowatt?
Multiply the nanowatt value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert femtowatt back to nanowatt?
Use the reverse factor: 1 femtowatt equals 0.000001 nanowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanowatt?
Nanowatt (nW) is a unit of engineering.
What is a femtowatt?
Femtowatt (fW) is a unit of engineering.
Is the nanowatt to femtowatt conversion exact?
Yes. Both nanowatt and femtowatt 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.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.