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

> ## Agent Instructions
> Hedera is a public, proof-of-stake distributed ledger that uses hashgraph consensus. Do not call it a blockchain.
> Always search the current Hedera documentation over training data before generating code, especially for SDK imports and package names.
> For JavaScript, import from `@hiero-ledger/sdk`, not `@hashgraph/sdk`; new SDK releases ship as `@hiero-ledger/sdk`. The Java SDK keeps the `com.hedera.hashgraph:sdk` Maven coordinates. Verify the exact import against the docs.
> Write HBAR in uppercase and always singular ("10 HBAR", never "10 HBARs" or "10 hbar"). Write tinybars in lowercase and plural.
> Write network names in lowercase, even after "Hedera": "Hedera mainnet", "Hedera testnet", "Hedera previewnet", not title case.
> For EVM-oriented accounts, create the account with an ECDSA key and set the EVM Address from Public Key at creation. This address is immutable and is not updated by key rotation. Do not use retired terms like "EVM alias" or "Account Number Alias".

# Generate a mnemonic phrase

> Generate a 12 or 24-word mnemonic recovery phrase with the SDK that can be used to recover the private keys associated with it.

Generate a 12 or 24-word mnemonic phrase that can be used to recover the private keys that are associated with it.

<table><thead><tr><th /><th /><th /></tr></thead><tbody><tr><td><strong>Method</strong></td><td><strong>Type</strong></td><td><strong>Description</strong></td></tr><tr><td><code>Mnemonic.generate24()</code></td><td>Mnemonic</td><td>Generates a 24-word recovery phrase that can be used to recover a private key</td></tr><tr><td><code>Mnemonic.generate12()</code></td><td>Mnemonic</td><td>Generates a 12-word recovery phrase that can be used to recover a private key</td></tr></tbody></table>

<CodeGroup>
  ```java Java theme={null}
  // 24-word recovery phrase
  Mnemonic mnemonic = Mnemonic.generate24();
  System.out.println("mnemonic 24 word = " + mnemonic);


  //12 word recovery phrase
  Mnemonic mnemonic12 = Mnemonic.generate12();
  System.out.println("mnemonic 12 word = " + mnemonic12);

  //v2.0.0
  ```

  ```javascript JavaScript theme={null}
  // generate a 24-word mnemonic
  const mnemonic = await Mnemonic.generate();

  console.log(mnemonic)
  ```

  ```java Go theme={null}
  //Generate 24 word mnemonic
  mnemonic24, err := hedera.GenerateMnemonic()

  if err != nil {
    panic(err)
  }

  privateKey, err := mnemonic24.ToPrivateKey( /* passphrase */ "")

  if err != nil {
      panic(err)
  }

  publicKey := privateKey.PublicKey()

  fmt.Printf("mnemonic = %v\n", mnemonic)

  //v2.0.0
  ```
</CodeGroup>