How to back up android contacts?

http://www.mobikin.com/android-backup/transfer-contacts-from-android-to-computer.html

MobiKin Assistant for Android

As one-stop solution, MobiKin Assistant for Android can help you backup, edit or manage your Android contacts, messages, music, photos, movies, etc. on computer directly.

1.Backup It All Up with One ClickBackup all data from the device to computer with one simple click.

Overview

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2.Transfer, Edit Contacts & SMS FreelyImport and export contacts list, add, delete or edit contact info, texting or mass texting people on computer

Organize Your Apps without LimitationInstall or uninstall APK files through desktop computer with one simple click.Backup Apps from Android phones & tablets to computer selectively or in a batch.

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Step 1. Link your phone to the computer via its USB cable. Then launch the program after the installation.

Step 2.Then tick the "USB debugging opened" option and click "Next" to install USB driver on your computer.

How to Transfer Contacts from Android Phone to Computer?

Step 3. Select the "Contacts" and preview the items on the right panel. Export Contacts to Computer.

How to Transfer Contacts from Android Phone to Computer?

Thank you !

http://www.mobikin.com/assistant-for-android/