---
title: femtowatts
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/unitpower/femtowatts
---

# femtowatts

The femtowatts unit of power.

## Declaration

```swift
@NSCopying class var femtowatts: UnitPower { get }
```

## See Also

### Accessing Predefined Units

- [terawatts](foundation/unitpower/terawatts.md)
- [gigawatts](foundation/unitpower/gigawatts.md)
- [megawatts](foundation/unitpower/megawatts.md)
- [kilowatts](foundation/unitpower/kilowatts.md)
- [watts](foundation/unitpower/watts.md)
- [milliwatts](foundation/unitpower/milliwatts.md)
- [microwatts](foundation/unitpower/microwatts.md)
- [nanowatts](foundation/unitpower/nanowatts.md)
- [picowatts](foundation/unitpower/picowatts.md)
- [horsepower](foundation/unitpower/horsepower.md)