---
title: duration
framework: metrickit
role: symbol
role_heading: Instance Property
path: metrickit/metricreport/intervalentry/duration
---

# duration

The duration of this collection interval.

## Declaration

```swift
let duration: Measurement<UnitDuration>
```

## See Also

### Interval details

- [states](metrickit/metricreport/intervalentry/states.md)