---
title: timeDelta
framework: Compute Graph
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computegraphsimulation/simulationrate-swift.struct/timedelta
---

# timeDelta

The fixed time interval in seconds between simulation steps, used when mode is ComputeGraphSimulation.SimulationRate.Mode.fixedTime.

## Declaration

```swift
var timeDelta: Float
```