---
name: "SDL_NS_PER_US"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_NS_PER_US"
---

# SDL\_NS\_PER\_US(3)

Number of nanoseconds in a microsecond.

## NAME

SDL\_NS\_PER\_US - Number of nanoseconds in a microsecond.

## HEADER FILE

Defined in SDL3/SDL\_timer.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**#define SDL\_NS\_PER\_US       1000**

## DESCRIPTION

This is always 1000.

## AVAILABILITY

This macro is available since SDL 3.2.0.