---
title: "radianAngleUnit(with:)"
framework: healthkit
role: symbol
role_heading: Type Method
path: "healthkit/hkunit/radianangleunit(with:)"
---

# radianAngleUnit(with:)

Returns a HealthKit unit for measuring angles, using radian units with the provided prefix.

## Declaration

```swift
class func radianAngleUnit(with prefix: HKMetricPrefix) -> Self
```

## Parameters

- `prefix`: A valid metric prefix value. For the complete list of prefix values, see doc://com.apple.healthkit/documentation/HealthKit/HKMetricPrefix.

## See Also

### Constructing angle units

- [degreeAngle()](healthkit/hkunit/degreeangle().md)
- [radianAngle()](healthkit/hkunit/radianangle().md)