How to Find Your Windows 7 Product Key

Use free software to extract your Windows 7 key from the Registry

What to Know

  • You'll need a free product key-finder program that supports Windows 7, then just follow the easy instructions to get the number.
  • The Windows 7 product key is sometimes called the Windows 7 serial key, activation key, or CD key.
  • A copy of your Windows 7 key is also stored in the registry. It's encrypted but a special program will extract it for you.

This article explains how to locate a Win 7 activation (product) key. The manual techniques used to locate the product key for older versions of Windows won't work in Windows 7 (they only locate the product ID, which is different). Our Windows Product Keys FAQ explains product keys and how they work in Windows.

How to Find Your Windows 7 Product Key

Follow the steps below to locate your Windows 7 product key code:

  1. Choose a free product key-finder program from this list that supports Windows 7.

    Any product key finder that locates Windows 7 product keys will locate the product keys for any version of Windows 7: Ultimate, Enterprise, Professional, Home Premium, Home Basic, and Starter.

  2. Download and run the key-finder program. Follow any instructions provided by the software.

  3. The numbers and letters displayed by the program represent the Windows 7 product key.

    The product key should be formatted like this:


    To be clear, that's five sets of five letters and numbers.

  4. Write this key code down exactly as the program displays it to you. Most keyfinder tools let you export the key to a text file or copy it to the clipboard.

    If even one character is written down incorrectly, the installation of Windows 7 that you attempt with this product key will fail.

  5. Reinstall Windows 7 using that product key.

A Few More Options

If you need to install the Windows 7 operating system but you still can't find your Windows 7 product key, even with a product key finder, you have two choices:

As of January 2020, Microsoft is no longer supporting Windows 7. We recommend upgrading to Windows 10 to continue receiving security updates and technical support.