If you want to generate multiple wallets, you can do so here: Bulk Generate
This page allows you to download different versions of private keys and re-print your paper wallet. You may want to do this in order to [import your account into Geth/Mist](http://ethereum.stackexchange.com/questions/465/how-to-import-a-plain-private-key-into-geth/). If you want to check your balance, we recommend using a blockchain explorer like etherscan.io.
You arrived via a link that has the address, amount, gas or data fields filled in for you. You can change any information before sending. Unlock your wallet to get started.
MyEtherWallet is a free, open-source service dedicated to your privacy and security. The more donations we receive, the more time we spend creating new features, listening to your feedback, and giving you what you want. We are just two people trying to change the world. Help us?DONATE
Send Entire Balance
If you are getting an insufficient balance for gas ... error, you must have a small amount of ETH in your account in order to cover the cost of gas. Add 0.01 ETH to this account and try again.
Generating offline transactions can be done in three steps. You will complete steps 1 and 3 on an online computer, and step 2 on an offline/airgapped computer. This ensures your private keys do not touch an internet-connected device.
Note: This is the FROM address, not the TO address. Nonce is generated from the originating account. If using an airgapped computer, it would be the address of the cold-storage account.
Paste the signed transaction from Step 2 here and press the "SEND TRANSACTION" button.
Do you see something missing? Have another question? Get in touch with us, and we will not only answer your question, we will update this page to be more useful to people in the future!
MyEtherWallet gives you the ability to generate new wallets so you can store your Ether yourself, not on an exchange. This process happens entirely on your computer, not our servers. Therefore, when you generate a new wallet, **you are responsible for safely backing it up**.
You should always back up your wallet externally and in multiple physical locations - like on a USB drive and/or a piece of paper.
Keep in mind, you must prevent loss of the keys and password due to loss or failure of you hard drive failure, or USB drive, or piece of paper. You also must keep in mind physical loss / damage of an entire area (think fire or flood).
**Before you send any Ether to your new wallet**, you should ensure you have access to it.
If you plan to move a large amount of ether, you should test sending a small amount to your wallet first to ensure everything goes as planned.
You can run MyEtherWallet.com on your computer instead of from the GitHub servers. You can generatea a wallet completely offline and send transactions from the "Offline Transaction" page.
In case you are not familiar, you need to keep the entire folder in order to run the website, not just index.html. Don't touch or move anything around in the folder. If you are storing a backup of the MyEtherWallet repo for the future, we recommend just storing the ZIP so you can be sure the folder contents stay intact.
As we are constantly updating MyEtherWallet.com, we recommend you periodically update your saved version of the repo.
geth --rpc --rpccorsdomain "null" --keystore "dont_put_secret_files_here_ever"or parity is running with
parity --rpccorsdomain "*" --keys-path "dont_put_secret_files_here_ever"
[Check out Ethplorer.io](https://ethplorer.io/) if you need help finding symbol / decimal.
MyEtherWallet is not a web wallet. You don't have a login and nothing ever gets saved to our servers. It is simply an interface that allows you interact with the blockchain.
If MyEtherWallet.com goes down, you would have to find another way (like geth or Ethereum Wallet / Mist) to do what we are doing. But you wouldn't have to "get" your Ether out of MyEtherWallet because it's not in MyEtherWallet. It's in whatever wallet your generated via our site.
You can import your unencrypted private key and your Geth/Mist Format (encrypted) files directly into geth / Ethereum Wallet / Mist very easily now. See question #10 below.
In addition, the likelihood of us taking MyEtherWallet down is slim to none. It costs us almost nothing to maintain as we aren't storing any information. If we do take the domain down, it still is, and always will be, publicly available at https://github.com/kvhnuke/etherwallet. You can download the ZIP there and run it locally.
No, the send transaction page is not offline. It needs the internet in order to get the current gas price, nonce of your account, and broadcast the transaction (aka "send"). However, it only sends the signed transaction. Your private key safely stays with you. We also now provide an "Offline Transaction" page so that you can ensure your private keys are on an offline/airgapped computer at all times.
Using an Geth/Mist JSON file from MyEtherWallet v2+....
UTC--2016-04-14........) into that keystore folder.
Using your unencrypted private key...
nothing_special_delete_me.txt. Make sure it says "UTF-8" and "If no extension is provided use .txt" in the save dialog.
geth account import ~/Desktop/nothing_special_delete_me.txt
geth account import C:\nothing_special_delete_me.txt
Most likely, this means you are attempting to send Ether to a contract. Sending to a contract requires a bit more data and therefore a bit more gas. On the "Send Ether" page, click the "+ Advanced: Add More Gas or Data" button below the amount field. This will display two additional fields that you can use to increase the gas above the default 21000, or add data to your transaction.
While the mouse moving thing is clever and we understand why people like it, the reality is window.crypto ensures more entropy than your mouse movements. The mouse movements aren't unsafe, it's just that we (and tons of other crypto experments) believe in window.crypto. In addition, MyEtherWallet.com can be used on touch devices. Here's a conversation between an angry redditor and Vitalik Buterin regarding mouse movements v. window.crypto and here is the the window.crypto w3 spec.
Addresses will only show up in a blockchain explorer once the account has activity on it—for example, once you have transferred some Ether to it.
This is most likely due to the fact that you are behind a firewall. The API that we use to get the balance and convert said balance is often blocked by firewalls for whatever reason. You will still be able to send transactions, you just need to use a different method to see said balance, like etherscan.io
Mist files are typically found in the file locations above, but it's much easier to open Mist, select "Accounts" in the top bar, select "Backup", and select "Accounts". This will open the folder where your files are stored.
Wherever you saved it. ;) It also was emailed to you, so check there. Look for the file called
"ethereum_wallet_backup.json" and select that file. This wallet file will be encrypted with a password that you created during the purchase of the pre-sale.
Short version: yes, but finding an account with a balance would take longer than the universe...so...no.
Long ELI5 Version: So Ethereum is based on Public Key Cryptography, specifically Elliptic curve cryptography which is very widely used, not just in Ethereum. Most servers are protected via ECC. Bitcoin uses the same, as well as SSH and TLS and a lot of other stuff. The Ethereum keys specifically are 256-bit keys, which are stronger than 128-bit and 192-bit, which are also widely used and still considered secure by experts.
In this you have a private key and a public key. The private key can derive the public key, but the public key cannot be turned back into the private key. The fact that the internet and the world’s secrets are using this cryptography means that if there is a way to go from public key to private key, your lost ETH is the least of everyone’s problems.
Now, that said, YES if someone else has your private key then they can indeed send ETH from your account. Just like if someone has your password to your email, they can read and send your email, or the password to your bank account, they could make transfers. You could download the Keystore version of your private key which is the private key that is encrypted with a password. This is like having a password that is also protected by another password.
And YES, in theory you could just type in a string of 64 hexadecimal characters until you got one that matched. In fact, smart people could write a program to very quickly check random private keys. This is known as "brute-forcing" or "mining" private keys. People have thought about this long and hard. With a few very high end servers, they may be able to check 1M+ keys / second. However, even checking that many per second would not yield access to make the cost of running those servers even close to worthwhile - it is more likely you, and your great-grandchildren, will die before getting a match.
If you know anything about Bitcoin, this will put it in perspective: *To illustrate how unlikely this is: suppose every satoshi of every bitcoin ever to be generated was sent to its own unique private keys. The probability that among those keys there could be two that would correspond to the same address is roughly one in 100 quintillion.*
If you want something a bit more technical: *These numbers have nothing to do with the technology of the devices; they are the maximums that thermodynamics will allow. And they strongly imply that brute-force attacks against 256-bit keys will be infeasible until computers are built from something other than matter and occupy something other than space.*
Of course, this all assumes that keys are generated in a truly random way & with sufficient entropy. The keys generated here meet that criteria, as do Jaxx and Mist/geth. The Ethereum wallets are all pretty good. Keys generated by brainwallets do not, as a person's brain is not capable of creating a truly random seed. There have been a number of other issues regarding lack of entropy or seeds not being generated in a truly random way in Bitcoin-land, but that's a separate issue that can wait for another day.
If one of your first questions is "Why should I trust these people?", that is a good thing. Hopefully the following will help ease your fears.
|Address Identicon||Address||Private Key (unencrypted)|
AMOUNT / NOTES
YOUR PRIVATE KEY
Your Private Key: