---
title: length
framework: simd
role: symbol
role_heading: Instance Property
path: simd/simd_quatd/length
---

# length

The length of the quaternion.

## Declaration

```swift
var length: Double { get }
```

## Mentioned in

Working with Quaternions

## See Also

### Querying a quaternion’s properties

- [angle](simd/simd_quatd/angle.md)
- [axis](simd/simd_quatd/axis.md)
- [conjugate](simd/simd_quatd/conjugate.md)
- [imag](simd/simd_quatd/imag.md)
- [real](simd/simd_quatd/real.md)
- [inverse](simd/simd_quatd/inverse.md)
- [normalized](simd/simd_quatd/normalized.md)
- [vector](simd/simd_quatd/vector.md)