---
title: duration
framework: swiftui
role: symbol
role_heading: Instance Property
path: swiftui/spring/duration
---

# duration

The perceptual duration, which defines the pace of the spring.

## Declaration

```swift
var duration: TimeInterval { get }
```

## See Also

### Getting spring characteristics

- [bounce](swiftui/spring/bounce.md)
- [damping](swiftui/spring/damping.md)
- [dampingRatio](swiftui/spring/dampingratio.md)
- [mass](swiftui/spring/mass.md)
- [response](swiftui/spring/response.md)
- [settlingDuration](swiftui/spring/settlingduration.md)
- [stiffness](swiftui/spring/stiffness.md)