---
title: "BIP39 Word #856: helmet — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/helmet/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #856 01101010111 

# helmet — BIP39 word #856

"**helmet**" is word #856 of the 2048 words in the official BIP39 English wordlist, between [hello](/bip39-word/hello/) and [help](/bip39-word/help/). In a seed phrase it stands for the 11-bit value `01101010111`, decimal index 855\. 

/ˈhɛlmɪt/  · _noun:_ a hard hat worn to protect the head 

[Russian](/ru/ "The BIP39 wordlist with Russian translations"): шлем 

## Binary Representation

Seven 1-bits and four 0-bits; 330 of the 2048 indexes have exactly seven 1-bits.

One wrong bit turns it into (leftmost bit first):

[turtle](/bip39-word/turtle/)[cliff](/bip39-word/cliff/)[enough](/bip39-word/enough/)[kit](/bip39-word/kit/)[glass](/bip39-word/glass/)[humble](/bip39-word/humble/)[happy](/bip39-word/happy/)[hip](/bip39-word/hip/)[heavy](/bip39-word/heavy/)[height](/bip39-word/height/)[hello](/bip39-word/hello/) 

Position

Hex Index

0x357

4-Letter Prefix

helm

## About "helmet" in BIP39

- "helmet" has 6 letters, but the first four, **"helm"**, already identify it, because **"hel"** also begins [hello](/bip39-word/hello/) and [help](/bip39-word/help/).
- **"helm"** is unique only within the English list: it also begins helma in the [Czech list](/czech/), so a four-letter backup should say which list it uses.

## Word #856 in the Other 9 BIP39 Wordlists

[Czech](/czech/) mlhovina 

[French](/french/) fossile 

[Italian](/italian/) intero 

[Japanese](/japanese/) しゅっせき 

[Korean](/korean/) 세미나 

[Portuguese](/portuguese/) focinho 

[Spanish](/spanish/) hecho 

[Traditional Chinese](/chinese-traditional/) 蛋 

[Simplified Chinese](/chinese-simplified/) 蛋 

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "hel":

[hello](/bip39-word/hello/)[help](/bip39-word/help/) 

## More BIP39 Words Starting with "H"

[ #852 heavy ](/bip39-word/heavy/)[ #853 hedgehog ](/bip39-word/hedgehog/)[ #854 height ](/bip39-word/height/)[ #855 hello ](/bip39-word/hello/)[ #857 help ](/bip39-word/help/)[ #858 hen ](/bip39-word/hen/)[ #859 hero ](/bip39-word/hero/)[ #860 hidden ](/bip39-word/hidden/) 

[View all words starting with "H" ](/bip39-words/h/) 

## Seed phrase, key and recovery guides

- [Bitcoin Private Key Format: WIF, Base58 and Hex Explained](/private-key-btc/)
- [How to Encrypt a Seed Phrase: AES, XOR and Steganography](/seed-phrase-encrypting-with-aes-xor-and-steganography/)
- [Bitcoin Improvement Proposal (BIP): Process and Deployed BIP List](/bitcoin-improvement-proposal/)

[ Full BIP39 Wordlist ](/)