---
title: CFTimeInterval
framework: corefoundation
role: symbol
role_heading: Type Alias
path: corefoundation/cftimeinterval
---

# CFTimeInterval

Type used to represent elapsed time in seconds.

## Declaration

```swift
typealias CFTimeInterval = Double
```

## See Also

### Data Types

- [CFAbsoluteTime](corefoundation/cfabsolutetime.md)
- [CFGregorianDate](corefoundation/cfgregoriandate.md)
- [CFGregorianUnits](corefoundation/cfgregorianunits.md)