<p>The <a href="http://brainwallet.org" rel="nofollow">BrainWallet</a> website does the trick. </p>

CC BY-SA 3.0
2013-12-30T04:30:45.687Z
so i just paste my private key in the textbox? but does it have to be a specific format because it doesnt seem like I can just type anything in there even though it meets the length requirements.
Patoshi パトシ
CC BY-SA 3.0
2013-12-30T16:29:19.730Z
Yeah a private key must be of a specific format. Do some reading on ECDSA, I don't know the format by heart. If you want to be able to enter just any line of text as a private key, you should use the passphrase field of BrainWallet.
Steven Roose
CC BY-SA 3.0
2013-12-30T18:51:57.970Z
So I can just create a passphrase which gets converted into a bitcoin wallet address? Now I would just have to remember that to retrieve the address and private key? Like this: http://prntscr.com/2f6z5i ??
Patoshi パトシ
CC BY-SA 3.0
2013-12-30T20:49:28.780Z
Yes, that's the purpose of a brain wallet. Keep in mind that everyone can try those passphrase, so make sure you use a very strong one for it.
Steven Roose
CC BY-SA 3.0
2013-12-29T17:36:20.413Z
2013-12-29T17:36:20.413Z
Steven Roose
<p>I read that you are able to extract the public key address from a private key address. Is there a website or app that can do such a thing? I just want to be able to see if I can make up my own private key. </p>

<wallet><private-key>
Whats a site or app where I can extract a public key just by typing in a private key?
Patoshi パトシ
# Whats a site or app where I can extract a public key just by typing in a private key?

(Asked by: username_0 on 2013-12-29)

I read that you are able to extract the public key address from a private key address. Is there a website or app that can do such a thing? I just want to be able to see if I can make up my own private key.

**Tags:** wallet, private-key


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## 1 answers

### Answer by username_1 on 2013-12-29. Score: 2

The [BrainWallet](http://brainwallet.org) website does the trick.

> **Comments:**
> **username_0**: so i just paste my private key in the textbox? but does it have to be a specific format because it doesnt seem like I can just type anything in there even though it meets the length requirements.  
> **username_1**: Yeah a private key must be of a specific format. Do some reading on ECDSA, I don't know the format by heart. If you want to be able to enter just any line of text as a private key, you should use the passphrase field of BrainWallet.  
> **username_0**: So I can just create a passphrase which gets converted into a bitcoin wallet address? Now I would just have to remember that to retrieve the address and private key? Like this: http://prntscr.com/2f6z5i ??  
> **username_1**: Yes, that's the purpose of a brain wallet. Keep in mind that everyone can try those passphrase, so make sure you use a very strong one for it.  

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