Create windows 10 installation media using Media creation tool

Download and run the Media Creation Tool for Windows 10

You can use the Media Creation Tool to create a Windows 10 ISO image. Begin by running the Media Creation Tool exe file, using a user account with administrator permissions. When User Account Control (UAC) asks if you are sure that you want to run this app, click or tap Yes.

Media Creation Tool loads and asks you to accept its license terms. Click or tap Accept to continue.

You are asked what you want to do. Choose "Create installation media (USB flash drive, DVD, or ISO file) for another PC," and press Next.

Now Select the language and architecture you want to install in and click on the next

Now here is the option choosing in which media you want to create  media installation ..and if you want to save iso file to drive you can save the file in the different location after the download finish you can simply install the windows 10 to your device