---
title: "value(at:)"
framework: swiftui
role: symbol
role_heading: Instance Method
path: "swiftui/unitcurve/value(at:)"
---

# value(at:)

Returns the output value (y component) of the curve at the given time.

## Declaration

```swift
func value(at progress: Double) -> Double
```

## Parameters

- `progress`: The input progress (x component). The provided value is clamped to the range [0,1].

## Return Value

Return Value The output value (y component) of the curve at the given progress.

## See Also

### Getting curve characteristics

- [velocity(at:)](swiftui/unitcurve/velocity(at:).md)