You can create and edit your contacts by using the Contacts app on iCloud.com from a Mac or Windows web browser. Changes you make are automatically pushed to your iOS devices and computers where you set up iCloud for Contacts. On your iPhone, iPad, or iPod touch, changes are pushed to the Contacts app. On your Mac, changes are pushed to Contacts (or Address Book in OS X v10.7.5), and on your Windows computer, changes are pushed to Microsoft Outlook. No matter which device you use to edit your contacts, the changes are updated everywhere, so you never have to connect your iOS device to your computer to keep your contacts current.
Access iCloud Contacts from a web browser
Go to Apple ID (the one you use with iCloud).
If you’re using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Contacts.
When accessing iCloud Contacts, make sure you use a browser recommended in the Apple Support article iCloud: System requirements.