---
title: numberOfBits
framework: Kernel
role: symbol
role_heading: Instance Method
platforms: [driverkit 19.0+, macOS 10.15+]
path: kernel/osnumber/3180923-numberofbits
---

# numberOfBits

Returns the number of bits the OSNumber was created with.

## Declaration

```occ
size_t numberOfBits(void);
```

```occ
virtual unsigned int numberOfBits(void);
```

## Return Value

Return Value Returns the number of bits the OSNumber was created with.