> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hyperlane.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Typecasts Library

The `TypeCasts` library provides simple and efficient functions for converting between `address` and `bytes32` types.

This library is useful for cases where you need to work with `bytes32` types in your smart contracts but still need to convert them back to `address` types or vice versa.

## `TypeCasts` library

```solidity theme={null}
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.11;

library TypeCasts {
    // alignment preserving cast
    function addressToBytes32(address _addr) internal pure returns (bytes32) {
        return bytes32(uint256(uint160(_addr)));
    }

    // alignment preserving cast
    function bytes32ToAddress(bytes32 _buf) internal pure returns (address) {
        return address(uint160(uint256(_buf)));
    }
}
```