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# Duration.UnitsFormatStyle.Unit

A unit to use in formatting a duration.

```
struct Unit
```

## Overview

Supported units range from hours to nanoseconds. Use these with the `allowed` parameter of the [`Duration.UnitsFormatStyle`](/documentation/Swift/Duration/UnitsFormatStyle) initializers to specify which units to use in a formatted string.

## Topics

### Duration units

[`static var hours: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/hours)

The hours unit, used for formatting a duration.

[`static var minutes: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/minutes)

The minutes unit, used for formatting a duration.

[`static var seconds: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/seconds)

The seconds unit, used for formatting a duration.

[`static var milliseconds: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/milliseconds)

The milliseconds unit, used for formatting a duration.

[`static var microseconds: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/microseconds)

The microseconds unit, used for formatting a duration.

[`static var nanoseconds: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/nanoseconds)

The nanoseconds unit, used for formatting a duration.

### Encoding and decoding

### Hashing

### Comparing units

### Type Properties

[`static var days: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/days)

The unit for days. One day is always 86400 seconds.

[`static var weeks: Duration.UnitsFormatStyle.Unit`](/documentation/Swift/Duration/UnitsFormatStyle/Unit/weeks)

The unit for weeks. One week is always 604800 seconds.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`Encodable`](/documentation/Swift/Encodable)

[`Decodable`](/documentation/Swift/Decodable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

---

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