---
title: NSEC_PER_USEC
framework: dispatch
role: symbol
role_heading: Global Variable
path: dispatch/nsec_per_usec
---

# NSEC_PER_USEC

## Declaration

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

## Discussion

Discussion The number of nanoseconds in one microsecond.

## See Also

### Time Multiplier Constants

- [USEC_PER_SEC](dispatch/usec_per_sec.md)
- [NSEC_PER_SEC](dispatch/nsec_per_sec.md)
- [NSEC_PER_MSEC](dispatch/nsec_per_msec.md)