user3029: I'm building an application on bitcoin and want to use testnet instead of using real bitcoins to do my test. I'm mainly using Electrum-3.1.3 to do sweeping of addresses. But how can I switch this to be on the testnet chain instead?

user48884: Run Electrum with the --testnet startup option.

user38458: If you install Electrum on Windows, you will have two programs you can start. One of them is called "Electrum Testnet".

user61006: General answer is running:
$ electrum --testnet
If you are using Mac OSX then open terminal an jump to:
/Aplications/Electrum/Contents/OSX
there you need to run:
& ./Electrum --testnet
On newer Mac OS versions /Applications/Electrum.app/Contents/MacOS/run_electrum --testnet

3029: <p>I'm building an application on bitcoin and want to use testnet instead of using real bitcoins to do my test. I'm mainly using Electrum-3.1.3 to do sweeping of addresses. But how can I switch this to be on the testnet chain instead?</p>
 48884: <p>Run Electrum with the <code>--testnet</code> startup option.</p>
 38458: <p>If you install Electrum on Windows, you will have two programs you can start. One of them is called "Electrum Testnet".</p>
 61006: <p>General answer is running:
$ electrum --testnet</p>
<p>If you are using Mac OSX then open terminal an jump to:
/Aplications/Electrum/Contents/OSX
there you need to run:
&amp; ./Electrum --testnet</p>
<p>On newer Mac OS versions <br><code>/Applications/Electrum.app/Contents/MacOS/run_electrum --testnet</code></p>
