# Signature.toTuple

Converts a [`Signature.Signature`](/api/Signature/types#signature) to a serialized [`Signature.Tuple`](/api/Signature/types#tuple) to be used for signatures in Transaction Envelopes, EIP-7702 Authorization Lists, etc.

## Imports

:::code-group
```ts [Named]
import { Signature } from 'ox'
```

```ts [Entrypoint]
import * as Signature from 'ox/Signature'
```
:::

## Examples

```ts twoslash
import { Signature } from 'ox'

const signatureTuple = Signature.toTuple({
  r: '0x000000000000000000000000000000000000000000000000000000000000007b',
  s: '0x00000000000000000000000000000000000000000000000000000000000001c8',
  yParity: 1
})
// @log: [yParity: '0x01', r: '0x7b', s: '0x1c8']
```

## Definition

```ts
function toTuple(
  signature: Signature,
): Tuple
```

**Source:** [src/core/Signature.ts](https://github.com/wevm/ox/blob/main/src/core/Signature.ts#L1010)

## Parameters

### signature

* **Type:** `Signature`

The [`Signature.Signature`](/api/Signature/types#signature) to convert.

#### signature.r

* **Type:** `0x${string}`

#### signature.s

* **Type:** `0x${string}`

#### signature.yParity

* **Type:** `numberType`
* **Optional**

## Return Type

The [`Signature.Tuple`](/api/Signature/types#tuple).

`Tuple`