---
title: uptimeNanoseconds
framework: dispatch
role: symbol
role_heading: Instance Property
path: dispatch/dispatchtime/uptimenanoseconds
---

# uptimeNanoseconds

Returns the number of nanoseconds since boot, excluding any time the system spent asleep.

## Declaration

```swift
var uptimeNanoseconds: UInt64 { get }
```

## See Also

### Getting the Time

- [rawValue](dispatch/dispatchtime/rawvalue.md)