iCloud: Contacts overview
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, iPod touch, or Mac, changes are pushed to the Contacts app. 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.
Use iCloud Contacts from a web browser
If you don’t see Contacts on iCloud.com, your account just has access to iCloud web-only features. To gain access to iCloud Contacts and other iCloud features, set up iCloud on your iOS device or Mac.
If you’re already using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Contacts.
When working with iCloud Contacts, make sure you use a browser recommended in the Apple Support article System requirements for iCloud.