<!--
{
  "availability" : [
    "iOS: -",
    "iPadOS: -",
    "macCatalyst: -",
    "macOS: -",
    "tvOS: -",
    "visionOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "Metal",
  "identifier" : "/documentation/Metal/MTLTimestamp",
  "metadataVersion" : "0.1.0",
  "role" : "Type Alias",
  "symbol" : {
    "kind" : "Type Alias",
    "modules" : [
      "Metal"
    ],
    "preciseIdentifier" : "c:@T@MTLTimestamp"
  },
  "title" : "MTLTimestamp"
}
-->

# MTLTimestamp

The number of nanoseconds for a point in absolute time or Mach absolute time.

```
typealias MTLTimestamp = UInt64
```

## Discussion

The type of absolute time a Metal timestamp uses can vary with a system’s configuration, but it’s consistent for a configuration.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)