---
title: nanoseconds
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/unitduration/nanoseconds
---

# nanoseconds

The nanosecond unit of duration.

## Declaration

```swift
@NSCopying class var nanoseconds: UnitDuration { get }
```

## See Also

### Accessing Predefined Units

- [hours](foundation/unitduration/hours.md)
- [minutes](foundation/unitduration/minutes.md)
- [seconds](foundation/unitduration/seconds.md)
- [milliseconds](foundation/unitduration/milliseconds.md)
- [microseconds](foundation/unitduration/microseconds.md)
- [picoseconds](foundation/unitduration/picoseconds.md)