---
title: isFinite
framework: swift
role: symbol
role_heading: Instance Property
path: swift/floatingpoint/isfinite
---

# isFinite

A Boolean value indicating whether this instance is finite.

## Declaration

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

## Discussion

Discussion All values other than NaN and infinity are considered finite, whether normal or subnormal.  For NaN, both isFinite and isInfinite are false.