---
title: Scale Factors
framework: iokit
role: collectionGroup
path: iokit/iotypes_h_user-space/1553154-scale_factors
---

# Scale Factors

## Overview

Overview Used when a scale_factor parameter is required to define a unit of time.

## Topics

### Constants

- [kNanosecondScale](iokit/knanosecondscale.md)
- [kMicrosecondScale](iokit/kmicrosecondscale.md)
- [kMillisecondScale](iokit/kmillisecondscale.md)
- [kTickScale](iokit/ktickscale.md)
- [kSecondScale](iokit/ksecondscale.md)