---
title: includingFractionalSeconds
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/datecomponents/iso8601formatstyle/includingfractionalseconds
---

# includingFractionalSeconds

If set, fractional seconds will be present in formatted output. Fractional seconds may be present in parsing regardless of the setting of this property.

## Declaration

```swift
var includingFractionalSeconds: Bool { get }
```